I'm stuck - I have this nice little text searcher I've put together.
I realised I needed to count lnies in individual blocks of text that the stored procedure is stored in, so I think I've figured a way to do that.
But it's not getting every instance of a search term in a stored procedure - and I think it's the same reason... the search term is split across a text boundary.
I've looked at how to change my query - and I'm coming up blank. The skills involved to change it are beyond me!
--Text searcher.
DECLARE #searchString VARCHAR(255),
#doesNotContain VARCHAR(255),
#previewLength INTEGER,
#findStoredProcedures VARCHAR(3),
#findTableFunction VARCHAR(3),
#findScalerFunction VARCHAR(3),
#findTrigger VARCHAR(3),
#findView VARCHAR(3),
#findUserTable VARCHAR(3),
#onlyInName VARCHAR(3)
--------------------------------------------------------
-- Search criteria:
SET #searchString = 'My search Term'
SET #findStoredProcedures = 'yes'
SET #findTableFunction = 'yes'
SET #findScalerFunction = 'yes'
SET #findUserTable = 'yes'
SET #findTrigger = 'yes'
SET #findView = 'yes'
SET #doesNotContain = ''
SET #previewLength = 30
--------------------------------------------------------
SELECT DISTINCT
ISNULL(
(SELECT REPLACE(CONVERT(VARCHAR(20), (CAST(SUM(LEN(SC2.text)) AS MONEY)), 1), '.00', '')
FROM syscomments SC2 WHERE SC2.id = SO.id GROUP BY SC2.id)
, '')
AS [Object length]
,
SO.name AS [Object name]
,
CASE
WHEN SO.xtype = 'P' THEN 'Stored Procedure'
WHEN SO.xtype = 'TF' THEN 'Table Function'
WHEN SO.xtype = 'FN' THEN 'Scaler Function'
WHEN SO.xtype = 'U' THEN 'User Table'
WHEN SO.xtype = 'TR' THEN 'Trigger'
WHEN SO.xtype = 'V' THEN 'View'
END
+ ISNULL((SELECT ' - ' + name FROM sysobjects WHERE id = SO.parent_obj), '')
AS [Object type]
,
ISNULL(SUBSTRING(SC.text, CHARINDEX(#searchString, SC.text) - #previewLength, #previewLength) +
SUBSTRING(SC.text, CHARINDEX(#searchString, SC.text), #previewLength + LEN(#searchString))
, '') AS [Preview of code]
,
(SELECT
COALESCE(
SUM(LEN(SC3.text) - LEN(REPLACE(SC3.text, CHAR(13), '')) + 1) + 4
+
(
SELECT
(LEN(LEFT(SC4.text, CHARINDEX(#searchString, SC4.text))) -
LEN(REPLACE(LEFT(SC4.text, CHARINDEX(#searchString, SC4.text)), CHAR(13), '')))
FROM syscomments SC4
WHERE
SC4.id = SO.id
AND SC4.colid = SC.colid
)
,
SUM(LEN(SC3.text) - LEN(REPLACE(SC3.text, CHAR(13), '')) + 1) + 4
,
(
SELECT
(LEN(LEFT(SC4.text, CHARINDEX(#searchString, SC4.text))) -
LEN(REPLACE(LEFT(SC4.text, CHARINDEX(#searchString, SC4.text)), CHAR(13), '')) + 1)
FROM syscomments SC4
WHERE
SC4.id = SO.id
AND SC4.colid = SC.colid
)
)
FROM syscomments SC3
WHERE
SC3.id = SO.id
AND SC3.colid < SC.colid
)
AS [Line number]
FROM sysobjects SO
LEFT JOIN syscomments SC
ON SO.id = SC.id
WHERE
(
(SO.type = 'P' AND #findStoredProcedures = 'yes')
OR
(SO.type = 'TF' AND #findTableFunction = 'yes')
OR
(SO.type = 'FN' AND #findScalerFunction = 'yes')
OR
(SO.type = 'TR' AND #findTrigger = 'yes')
OR
(SO.type = 'U' AND #findUserTable = 'yes')
OR
(SO.type = 'V' AND #findView = 'yes')
)
AND SO.category = 0
AND
(
(CHARINDEX(#searchString, SC.text) > 0
AND CHARINDEX(#doesNotContain, SC.text) = 0)
OR
(SO.type = 'U'
AND CHARINDEX(#searchString, SO.name) > 0
AND CHARINDEX(#doesNotContain, SO.name) = 0)
)
ORDER BY
[Object type], [Object name], [Line number]
Your where clause seems to have an issue, this bit here
(
(CHARINDEX(#searchString, SC.text) > 0
AND CHARINDEX(#doesNotContain, SC.text) = 0)
--OR
--(SO.type = 'U'
--AND CHARINDEX(#searchString, SO.name) > 0
--AND CHARINDEX(#doesNotContain, SO.name) = 0)
Team,
I am using Amazon redshift. below is the version:
PostgreSQL 8.0.2 on i686-pc-linux-gnu, compiled by GCC gcc (GCC) 3.4.2 20041017 (Red Hat 3.4.2-6.fc3), Redshift 1.0.748
I would like to drop one user account. if this user has access to any table/schemas/datbase, then that has to be revoked first and then it will allow us to drop the user. In redshift, "drop owned by ;" is not working. so, i need to programatically find out the access to granted to user before dropping it.
for e.g. i am giving access to this user on 2 schemas. But while revoking it, i need to use some FOR ..LOOP and then find out the schemas this user has access and revoke it, not thro manually ( as below ). Coudl you please help me ? i need to write a small procedure wherein need to create one cursor and store these 2 schemas, and under FOR..loop, i need to call them and revoke them one by one. If you provide this functionality, i can use this to revoke other table grants, database grants etc..
redshift=# GRANT all on schema schema44 to proj_user1;
GRANT
redshift=# grant all on schema proj_schema1 to proj_user1;
GRANT
redshift=#
redshift=# select nspname from pg_catalog.pg_namespace where array_to_string(nspacl,',') like '%proj_user1%';
nspname
--------------
schema44
proj_schema1
(2 rows)
redshift=# revoke all on schema schema44 from proj_user1;
REVOKE
redshift=# revoke all on schema proj_schema1 from proj_user1;
REVOKE
redshift=# select nspname from pg_catalog.pg_namespace where array_to_string(nspacl,',') like '%proj_user1%';
nspname
---------
(0 rows)
Thank you
There's no scripting available in Redshift that provides loop functionality. You can run the queries below from psql and use the output as the script to remove the user.
This query builds the revoke cmds for objects:
select
'revoke ' || substring(
case when charindex('r',split_part(split_part(array_to_string(relacl, '|'),pu.usename,2 ) ,'/',1)) > 0 then ',select ' else '' end
||case when charindex('w',split_part(split_part(array_to_string(relacl, '|'),pu.usename,2 ) ,'/',1)) > 0 then ',update ' else '' end
||case when charindex('a',split_part(split_part(array_to_string(relacl, '|'),pu.usename,2 ) ,'/',1)) > 0 then ',insert ' else '' end
||case when charindex('d',split_part(split_part(array_to_string(relacl, '|'),pu.usename,2 ) ,'/',1)) > 0 then ',delete ' else '' end
||case when charindex('R',split_part(split_part(array_to_string(relacl, '|'),pu.usename,2 ) ,'/',1)) > 0 then ',rule ' else '' end
||case when charindex('x',split_part(split_part(array_to_string(relacl, '|'),pu.usename,2 ) ,'/',1)) > 0 then ',references ' else '' end
||case when charindex('t',split_part(split_part(array_to_string(relacl, '|'),pu.usename,2 ) ,'/',1)) > 0 then ',trigger ' else '' end
||case when charindex('X',split_part(split_part(array_to_string(relacl, '|'),pu.usename,2 ) ,'/',1)) > 0 then ',execute ' else '' end
||case when charindex('U',split_part(split_part(array_to_string(relacl, '|'),pu.usename,2 ) ,'/',1)) > 0 then ',usage ' else '' end
||case when charindex('C',split_part(split_part(array_to_string(relacl, '|'),pu.usename,2 ) ,'/',1)) > 0 then ',create ' else '' end
||case when charindex('T',split_part(split_part(array_to_string(relacl, '|'),pu.usename,2 ) ,'/',1)) > 0 then ',temporary ' else '' end
, 2,10000)
|| ' on '||namespace||'.'||item ||' from "'||pu.usename||'";' as grantsql
from
(SELECT
use.usename as subject,
nsp.nspname as namespace,
c.relname as item,
c.relkind as type,
use2.usename as owner,
c.relacl
FROM
pg_user use
cross join pg_class c
left join pg_namespace nsp on (c.relnamespace = nsp.oid)
left join pg_user use2 on (c.relowner = use2.usesysid)
WHERE
c.relowner = use.usesysid
and nsp.nspname NOT IN ('pg_catalog', 'pg_toast', 'information_schema')
ORDER BY
subject, namespace, item
) join pg_user pu on array_to_string(relacl, '|') like '%'||pu.usename||'%'
where relacl is not null
and pu.usename='<username>'
order by 1;
Then you will need to change any table ownerships:
select 'alter table '||schemaname||'.'||tablename||' owner to <newowner>;' from pg_tables where tableowner = '<username>';
You can't change ownerships of views, so you have to drop them:
select 'drop view '||schemaname||'.'||viewname||' ;' from pg_views where viewowner = '<username>';
You'll need to remove the user from any groups:
select 'alter group '||nvl(groname,'default')||' drop user '||usename||';' from pg_user u left join pg_group g on ','||array_to_string(grolist,',')||',' like '%,'||cast(usesysid as varchar(10))||',%' where usename='<username>' ;
Finally remove from schemas:
select
'revoke ' || substring(
case when charindex('U',split_part(split_part(array_to_string(nspacl, '|'),pu.usename,2 ) ,'/',1)) > 0 then ',usage ' else '' end
||case when charindex('C',split_part(split_part(array_to_string(nspacl, '|'),pu.usename,2 ) ,'/',1)) > 0 then ',create ' else '' end
, 2,10000)
|| ' on schema '||nspname||' from "'||pu.usename||'";'
from pg_namespace pn,pg_user pu
where pu.usename='<username>' and array_to_string(nspacl,',') like '%'||pu.usename||'%'
and nspowner > 1 ;
I am using a Redshift cluster.
Version:
PostgreSQL 8.0.2 on i686-pc-linux-gnu, compiled by GCC gcc (GCC) 3.4.2 20041017 (Red Hat 3.4.2-6.fc3), Redshift 1.0.735
I just need to drop a user but it gives the following error message:
redshiftpocdb=# drop user test_55;
ERROR: user "test_55" cannot be dropped because the user has a privilege on some object
Here is the output of the \dp command:
redshiftpocdb=# \dp
Access privileges
schema | name | type | access privileges
--------+---------+-------+-------------------
public | company | table |
public | test2 | table |
public | test22 | table |
public | test222 | table |
public | v_date | table |
(5 rows)
In a Postgresql environment, we have the command DROP OWNED BY but it does not work in Redshift.
How can I find out what privileges were granted to the TEST_55 user? Is there any system view we can query ( for e..g in Oracle, we have DBA_ROLE_PRIVS, DBA_TAB_PRIVS...DBA_SYS_PRIVS .etc )?
To be able to drop a user, you have to (at least)
if they own any objects, change the owner to a different user
remove grants from any objects
remove them from groups
remove grants from schemas
You can use this to find any tables they own (then run "alter table owner to "):
select * from pg_tables where tableowner = 'test_55'
You can use this to build the script to revoke any grants:
select relacl ,
'revoke ' || substring(
case when charindex('r',split_part(split_part(array_to_string(relacl, '|'),pu.usename,2 ) ,'/',1)) > 0 then ',select ' else '' end
||case when charindex('w',split_part(split_part(array_to_string(relacl, '|'),pu.usename,2 ) ,'/',1)) > 0 then ',update ' else '' end
||case when charindex('a',split_part(split_part(array_to_string(relacl, '|'),pu.usename,2 ) ,'/',1)) > 0 then ',insert ' else '' end
||case when charindex('d',split_part(split_part(array_to_string(relacl, '|'),pu.usename,2 ) ,'/',1)) > 0 then ',delete ' else '' end
||case when charindex('R',split_part(split_part(array_to_string(relacl, '|'),pu.usename,2 ) ,'/',1)) > 0 then ',rule ' else '' end
||case when charindex('x',split_part(split_part(array_to_string(relacl, '|'),pu.usename,2 ) ,'/',1)) > 0 then ',references ' else '' end
||case when charindex('t',split_part(split_part(array_to_string(relacl, '|'),pu.usename,2 ) ,'/',1)) > 0 then ',trigger ' else '' end
||case when charindex('X',split_part(split_part(array_to_string(relacl, '|'),pu.usename,2 ) ,'/',1)) > 0 then ',execute ' else '' end
||case when charindex('U',split_part(split_part(array_to_string(relacl, '|'),pu.usename,2 ) ,'/',1)) > 0 then ',usage ' else '' end
||case when charindex('C',split_part(split_part(array_to_string(relacl, '|'),pu.usename,2 ) ,'/',1)) > 0 then ',create ' else '' end
||case when charindex('T',split_part(split_part(array_to_string(relacl, '|'),pu.usename,2 ) ,'/',1)) > 0 then ',temporary ' else '' end
, 2,10000)
|| ' on '||namespace||'.'||item ||' from "'||pu.usename||'";' as grantsql
from
(SELECT
use.usename as subject,
nsp.nspname as namespace,
c.relname as item,
c.relkind as type,
use2.usename as owner,
c.relacl
FROM
pg_user use
cross join pg_class c
left join pg_namespace nsp on (c.relnamespace = nsp.oid)
left join pg_user use2 on (c.relowner = use2.usesysid)
WHERE
c.relowner = use.usesysid
and nsp.nspname NOT IN ('pg_catalog', 'pg_toast', 'information_schema')
ORDER BY subject, namespace, item
) join pg_user pu on array_to_string(relacl, '|') like '%'||pu.usename||'%'
where relacl is not null
and pu.usename='test_55'
You can use a variation of this query to see if a user belongs to any groups (then use "alter group drop user "):
select usesysid, usename, nvl(groname,'default') from pg_user u
left join pg_group g on ','||array_to_string(grolist,',')||','
like '%,'||cast(usesysid as varchar(10))||',%'
where usename='test_55' order by 2,1;
You can use this query to see if they have any schema grants:
select * from pg_namespace where nspowner > 1 and array_to_string(nspacl,',') like '%test_55%';
Another variation, to get all users' privilege organized together:
WITH
usrs as (SELECT * FROM pg_user),
objs as (
SELECT
schemaname, 't' AS obj_type,
tablename AS objectname,
schemaname + '.' + tablename AS fullobj
FROM pg_tables
WHERE schemaname not in ('pg_internal')
UNION
SELECT
schemaname, 'v' AS obj_type,
viewname AS objectname,
schemaname + '.' + viewname AS fullobj
FROM pg_views
WHERE schemaname NOT IN ('pg_internal')
),
query as (
SELECT
schemaname,
objectname,
usename,
HAS_TABLE_PRIVILEGE(usrs.usename, fullobj, 'select') AS sel,
HAS_TABLE_PRIVILEGE(usrs.usename, fullobj, 'insert') AS ins,
HAS_TABLE_PRIVILEGE(usrs.usename, fullobj, 'update') AS upd,
HAS_TABLE_PRIVILEGE(usrs.usename, fullobj, 'delete') AS del,
HAS_TABLE_PRIVILEGE(usrs.usename, fullobj, 'references') AS ref
FROM objs, usrs
ORDER BY fullobj
)
SELECT * FROM query
WHERE (
sel = TRUE
OR ins = TRUE
OR upd = TRUE
OR del = TRUE
OR ref = TRUE
) AND schemaname='[optional schemaname]'
AND usename = '[optional username]';
I had to use || to concatenate strings, and a little difference as I have case-sensitive object names
'"' || schemaname || '"."' || tablename || '"' AS fullobj
'"' || schemaname || '"."' || viewname || '"' AS fullobj
instead of
schemaname + '.' + tablename AS fullobj
schemaname + '.' + viewname AS fullobj
I have created a table in postgreSQL. I want to look at the SQL statement used to create the table but cannot figure it out.
How do I get the create table SQL statement for an existing table in Postgres via commandline or SQL statement?
pg_dump -t 'schema-name.table-name' --schema-only database-name
More info - in the manual.
(NOTICE - this solution is not working with PostgreSQL v12+)
My solution is to log in to the postgres db using psql with the -E option as follows:
psql -E -U username -d database
In psql, run the following commands to see the sql that postgres uses to generate
the describe table statement:
-- List all tables in the schema (my example schema name is public)
\dt public.*
-- Choose a table name from above
-- For create table of one public.tablename
\d+ public.tablename
Based on the sql echoed out after running these describe commands, I was able to put together
the following plpgsql function:
CREATE OR REPLACE FUNCTION generate_create_table_statement(p_table_name varchar)
RETURNS text AS
$BODY$
DECLARE
v_table_ddl text;
column_record record;
BEGIN
FOR column_record IN
SELECT
b.nspname as schema_name,
b.relname as table_name,
a.attname as column_name,
pg_catalog.format_type(a.atttypid, a.atttypmod) as column_type,
CASE WHEN
(SELECT substring(pg_catalog.pg_get_expr(d.adbin, d.adrelid) for 128)
FROM pg_catalog.pg_attrdef d
WHERE d.adrelid = a.attrelid AND d.adnum = a.attnum AND a.atthasdef) IS NOT NULL THEN
'DEFAULT '|| (SELECT substring(pg_catalog.pg_get_expr(d.adbin, d.adrelid) for 128)
FROM pg_catalog.pg_attrdef d
WHERE d.adrelid = a.attrelid AND d.adnum = a.attnum AND a.atthasdef)
ELSE
''
END as column_default_value,
CASE WHEN a.attnotnull = true THEN
'NOT NULL'
ELSE
'NULL'
END as column_not_null,
a.attnum as attnum,
e.max_attnum as max_attnum
FROM
pg_catalog.pg_attribute a
INNER JOIN
(SELECT c.oid,
n.nspname,
c.relname
FROM pg_catalog.pg_class c
LEFT JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace
WHERE c.relname ~ ('^('||p_table_name||')$')
AND pg_catalog.pg_table_is_visible(c.oid)
ORDER BY 2, 3) b
ON a.attrelid = b.oid
INNER JOIN
(SELECT
a.attrelid,
max(a.attnum) as max_attnum
FROM pg_catalog.pg_attribute a
WHERE a.attnum > 0
AND NOT a.attisdropped
GROUP BY a.attrelid) e
ON a.attrelid=e.attrelid
WHERE a.attnum > 0
AND NOT a.attisdropped
ORDER BY a.attnum
LOOP
IF column_record.attnum = 1 THEN
v_table_ddl:='CREATE TABLE '||column_record.schema_name||'.'||column_record.table_name||' (';
ELSE
v_table_ddl:=v_table_ddl||',';
END IF;
IF column_record.attnum <= column_record.max_attnum THEN
v_table_ddl:=v_table_ddl||chr(10)||
' '||column_record.column_name||' '||column_record.column_type||' '||column_record.column_default_value||' '||column_record.column_not_null;
END IF;
END LOOP;
v_table_ddl:=v_table_ddl||');';
RETURN v_table_ddl;
END;
$BODY$
LANGUAGE 'plpgsql' COST 100.0 SECURITY INVOKER;
Here is the function usage:
SELECT generate_create_table_statement('tablename');
And here is the drop statement if you don't want this function to persist permanently:
DROP FUNCTION generate_create_table_statement(p_table_name varchar);
Generate the create table statement for a table in postgresql from linux commandline:
Create a table for a demo:
CREATE TABLE your_table(
thekey integer NOT NULL,
ticker character varying(10) NOT NULL,
date_val date,
open_val numeric(10,4) NOT NULL
);
pg_dump manual, can output the table create psql statement:
pg_dump -U your_user your_database -t your_table --schema-only
Which prints:
-- pre-requisite database and table configuration omitted
CREATE TABLE your_table (
thekey integer NOT NULL,
ticker character varying(10) NOT NULL,
date_val date,
open_val numeric(10,4) NOT NULL
);
-- post-requisite database and table configuration omitted
Explanation:
pg_dump helps us get information about the database itself. -U stands for username. My pgadmin user has no password set, so I don't have to put in a password. The -t option means specify for one table. --schema-only means print only data about the table, and not the data in the table.
pg_dump is elite C code that tries to play nicely with the evolving sql standards, and takes care of the thousand details that arise between postgresql's query language, and its representation on a disk. If you want to roll your own "psql disk to create statement" arrangement, ye be dragons: https://doxygen.postgresql.org/pg__dump_8c_source.html
Another option to get around pg_dump is to save the table-create SQL statement when you create the table. Keep it somewhere safe and retrieve it when you need it.
Or get the table name, column name and datatype information from postgresql with SQL:
CREATE TABLE your_table( thekey integer NOT NULL,
ticker character varying(10) NOT NULL,
date_val date,
open_val numeric(10,4) NOT NULL
);
SELECT table_name, column_name, data_type
FROM information_schema.columns
WHERE table_name = 'your_table';
Which prints:
┌────────────┬─────────────┬───────────────────┐
│ table_name │ column_name │ data_type │
├────────────┼─────────────┼───────────────────┤
│ your_table │ thekey │ integer │
│ your_table │ ticker │ character varying │
│ your_table │ date_val │ date │
│ your_table │ open_val │ numeric │
└────────────┴─────────────┴───────────────────┘
If you want to find the create statement for a table without using pg_dump, This query might work for you (change 'tablename' with whatever your table is called):
SELECT
'CREATE TABLE ' || relname || E'\n(\n' ||
array_to_string(
array_agg(
' ' || column_name || ' ' || type || ' '|| not_null
)
, E',\n'
) || E'\n);\n'
from
(
SELECT
c.relname, a.attname AS column_name,
pg_catalog.format_type(a.atttypid, a.atttypmod) as type,
case
when a.attnotnull
then 'NOT NULL'
else 'NULL'
END as not_null
FROM pg_class c,
pg_attribute a,
pg_type t
WHERE c.relname = 'tablename'
AND a.attnum > 0
AND a.attrelid = c.oid
AND a.atttypid = t.oid
ORDER BY a.attnum
) as tabledefinition
group by relname;
when called directly from psql, it is usefult to do:
\pset linestyle old-ascii
Also, the function generate_create_table_statement in this thread works very well.
Dean Toader Just excellent!
I'd modify your code a little, to show all constraints in the table and to make possible to use regexp mask in table name.
CREATE OR REPLACE FUNCTION public.generate_create_table_statement(p_table_name character varying)
RETURNS SETOF text AS
$BODY$
DECLARE
v_table_ddl text;
column_record record;
table_rec record;
constraint_rec record;
firstrec boolean;
BEGIN
FOR table_rec IN
SELECT c.relname FROM pg_catalog.pg_class c
LEFT JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace
WHERE relkind = 'r'
AND relname~ ('^('||p_table_name||')$')
AND n.nspname <> 'pg_catalog'
AND n.nspname <> 'information_schema'
AND n.nspname !~ '^pg_toast'
AND pg_catalog.pg_table_is_visible(c.oid)
ORDER BY c.relname
LOOP
FOR column_record IN
SELECT
b.nspname as schema_name,
b.relname as table_name,
a.attname as column_name,
pg_catalog.format_type(a.atttypid, a.atttypmod) as column_type,
CASE WHEN
(SELECT substring(pg_catalog.pg_get_expr(d.adbin, d.adrelid) for 128)
FROM pg_catalog.pg_attrdef d
WHERE d.adrelid = a.attrelid AND d.adnum = a.attnum AND a.atthasdef) IS NOT NULL THEN
'DEFAULT '|| (SELECT substring(pg_catalog.pg_get_expr(d.adbin, d.adrelid) for 128)
FROM pg_catalog.pg_attrdef d
WHERE d.adrelid = a.attrelid AND d.adnum = a.attnum AND a.atthasdef)
ELSE
''
END as column_default_value,
CASE WHEN a.attnotnull = true THEN
'NOT NULL'
ELSE
'NULL'
END as column_not_null,
a.attnum as attnum,
e.max_attnum as max_attnum
FROM
pg_catalog.pg_attribute a
INNER JOIN
(SELECT c.oid,
n.nspname,
c.relname
FROM pg_catalog.pg_class c
LEFT JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace
WHERE c.relname = table_rec.relname
AND pg_catalog.pg_table_is_visible(c.oid)
ORDER BY 2, 3) b
ON a.attrelid = b.oid
INNER JOIN
(SELECT
a.attrelid,
max(a.attnum) as max_attnum
FROM pg_catalog.pg_attribute a
WHERE a.attnum > 0
AND NOT a.attisdropped
GROUP BY a.attrelid) e
ON a.attrelid=e.attrelid
WHERE a.attnum > 0
AND NOT a.attisdropped
ORDER BY a.attnum
LOOP
IF column_record.attnum = 1 THEN
v_table_ddl:='CREATE TABLE '||column_record.schema_name||'.'||column_record.table_name||' (';
ELSE
v_table_ddl:=v_table_ddl||',';
END IF;
IF column_record.attnum <= column_record.max_attnum THEN
v_table_ddl:=v_table_ddl||chr(10)||
' '||column_record.column_name||' '||column_record.column_type||' '||column_record.column_default_value||' '||column_record.column_not_null;
END IF;
END LOOP;
firstrec := TRUE;
FOR constraint_rec IN
SELECT conname, pg_get_constraintdef(c.oid) as constrainddef
FROM pg_constraint c
WHERE conrelid=(
SELECT attrelid FROM pg_attribute
WHERE attrelid = (
SELECT oid FROM pg_class WHERE relname = table_rec.relname
) AND attname='tableoid'
)
LOOP
v_table_ddl:=v_table_ddl||','||chr(10);
v_table_ddl:=v_table_ddl||'CONSTRAINT '||constraint_rec.conname;
v_table_ddl:=v_table_ddl||chr(10)||' '||constraint_rec.constrainddef;
firstrec := FALSE;
END LOOP;
v_table_ddl:=v_table_ddl||');';
RETURN NEXT v_table_ddl;
END LOOP;
END;
$BODY$
LANGUAGE plpgsql VOLATILE
COST 100;
ALTER FUNCTION public.generate_create_table_statement(character varying)
OWNER TO postgres;
Now you can, for example, make the following query
SELECT * FROM generate_create_table_statement('.*');
which results like this:
CREATE TABLE public.answer (
id integer DEFAULT nextval('answer_id_seq'::regclass) NOT NULL,
questionid integer NOT NULL,
title character varying NOT NULL,
defaultvalue character varying NULL,
valuetype integer NOT NULL,
isdefault boolean NULL,
minval double precision NULL,
maxval double precision NULL,
followminmax integer DEFAULT 0 NOT NULL,
CONSTRAINT answer_pkey
PRIMARY KEY (id),
CONSTRAINT answer_questionid_fkey
FOREIGN KEY (questionid) REFERENCES question(id) ON UPDATE RESTRICT ON DELETE RESTRICT,
CONSTRAINT answer_valuetype_fkey
FOREIGN KEY (valuetype) REFERENCES answervaluetype(id) ON UPDATE RESTRICT ON DELETE RESTRICT);
for each user table.
The easiest method I can think of is to install pgAdmin 3 (found here) and use it to view your database. It will automatically generate a query that will create the table in question.
If you want to do this for various tables at once, you meed to use the -t switch multiple times (took me a while to figure out why comma separated list wasn't working). Also, can be useful to send results to an outfile or pipe to a postgres server on another machine
pg_dump -t table1 -t table2 database_name --schema-only > dump.sql
pg_dump -t table1 -t table2 database_name --schema-only | psql -h server_name database_name
Here is another solution to the old question. There have been many excellent answers to this question over the years and my attempt borrows heavily from them.
I used Andrey Lebedenko's solution as a starting point because its output was already very close to my requirements.
Features:
following common practice I have moved the foreign key constraints outside the table definition. They are now included as ALTER TABLE statements at the bottom. The reason is that a foreign key can also link to a column of the same table. In that fringe case the constraint can only be created after the table creation is completed. The create table statement would throw an error otherwise.
The layout and indenting looks nicer now (at least to my eye)
Drop command (commented out) in the header of the definition
The solution is offered here as a plpgsql function. The algorithm does however not use any procedural language. The function just wraps one single query that can be used in a pure sql context as well.
removed redundant subqueries
Identifiers are now quoted if they are identical to reserved postgresql language elements
replaced the string concatenation operator || with the appropriate string functions to improve performance, security and readability of the code.
Note: the || operator produces NULL if one of the combined strings is NULL. It should only be used when that is the desired behaviour. (check out the
usage in the code below for an example)
CREATE OR REPLACE FUNCTION public.wmv_get_table_definition (
p_schema_name character varying,
p_table_name character varying
)
RETURNS SETOF TEXT
AS $BODY$
BEGIN
RETURN query
WITH table_rec AS (
SELECT
c.relname, n.nspname, c.oid
FROM
pg_catalog.pg_class c
LEFT JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace
WHERE
relkind = 'r'
AND n.nspname = p_schema_name
AND c.relname LIKE p_table_name
ORDER BY
c.relname
),
col_rec AS (
SELECT
a.attname AS colname,
pg_catalog.format_type(a.atttypid, a.atttypmod) AS coltype,
a.attrelid AS oid,
' DEFAULT ' || (
SELECT
pg_catalog.pg_get_expr(d.adbin, d.adrelid)
FROM
pg_catalog.pg_attrdef d
WHERE
d.adrelid = a.attrelid
AND d.adnum = a.attnum
AND a.atthasdef) AS column_default_value,
CASE WHEN a.attnotnull = TRUE THEN
'NOT NULL'
ELSE
'NULL'
END AS column_not_null,
a.attnum AS attnum
FROM
pg_catalog.pg_attribute a
WHERE
a.attnum > 0
AND NOT a.attisdropped
ORDER BY
a.attnum
),
con_rec AS (
SELECT
conrelid::regclass::text AS relname,
n.nspname,
conname,
pg_get_constraintdef(c.oid) AS condef,
contype,
conrelid AS oid
FROM
pg_constraint c
JOIN pg_namespace n ON n.oid = c.connamespace
),
glue AS (
SELECT
format( E'-- %1$I.%2$I definition\n\n-- Drop table\n\n-- DROP TABLE IF EXISTS %1$I.%2$I\n\nCREATE TABLE %1$I.%2$I (\n', table_rec.nspname, table_rec.relname) AS top,
format( E'\n);\n\n\n-- adempiere.wmv_ghgaudit foreign keys\n\n', table_rec.nspname, table_rec.relname) AS bottom,
oid
FROM
table_rec
),
cols AS (
SELECT
string_agg(format(' %I %s%s %s', colname, coltype, column_default_value, column_not_null), E',\n') AS lines,
oid
FROM
col_rec
GROUP BY
oid
),
constrnt AS (
SELECT
string_agg(format(' CONSTRAINT %s %s', con_rec.conname, con_rec.condef), E',\n') AS lines,
oid
FROM
con_rec
WHERE
contype <> 'f'
GROUP BY
oid
),
frnkey AS (
SELECT
string_agg(format('ALTER TABLE %I.%I ADD CONSTRAINT %s %s', nspname, relname, conname, condef), E';\n') AS lines,
oid
FROM
con_rec
WHERE
contype = 'f'
GROUP BY
oid
)
SELECT
concat(glue.top, cols.lines, E',\n', constrnt.lines, glue.bottom, frnkey.lines, ';')
FROM
glue
JOIN cols ON cols.oid = glue.oid
LEFT JOIN constrnt ON constrnt.oid = glue.oid
LEFT JOIN frnkey ON frnkey.oid = glue.oid;
END;
$BODY$
LANGUAGE plpgsql;
Even more modification based on response from #vkkeeper. Added possibility to query table from the specific schema.
CREATE OR REPLACE FUNCTION public.describe_table(p_schema_name character varying, p_table_name character varying)
RETURNS SETOF text AS
$BODY$
DECLARE
v_table_ddl text;
column_record record;
table_rec record;
constraint_rec record;
firstrec boolean;
BEGIN
FOR table_rec IN
SELECT c.relname, c.oid FROM pg_catalog.pg_class c
LEFT JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace
WHERE relkind = 'r'
AND n.nspname = p_schema_name
AND relname~ ('^('||p_table_name||')$')
ORDER BY c.relname
LOOP
FOR column_record IN
SELECT
b.nspname as schema_name,
b.relname as table_name,
a.attname as column_name,
pg_catalog.format_type(a.atttypid, a.atttypmod) as column_type,
CASE WHEN
(SELECT substring(pg_catalog.pg_get_expr(d.adbin, d.adrelid) for 128)
FROM pg_catalog.pg_attrdef d
WHERE d.adrelid = a.attrelid AND d.adnum = a.attnum AND a.atthasdef) IS NOT NULL THEN
'DEFAULT '|| (SELECT substring(pg_catalog.pg_get_expr(d.adbin, d.adrelid) for 128)
FROM pg_catalog.pg_attrdef d
WHERE d.adrelid = a.attrelid AND d.adnum = a.attnum AND a.atthasdef)
ELSE
''
END as column_default_value,
CASE WHEN a.attnotnull = true THEN
'NOT NULL'
ELSE
'NULL'
END as column_not_null,
a.attnum as attnum,
e.max_attnum as max_attnum
FROM
pg_catalog.pg_attribute a
INNER JOIN
(SELECT c.oid,
n.nspname,
c.relname
FROM pg_catalog.pg_class c
LEFT JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace
WHERE c.oid = table_rec.oid
ORDER BY 2, 3) b
ON a.attrelid = b.oid
INNER JOIN
(SELECT
a.attrelid,
max(a.attnum) as max_attnum
FROM pg_catalog.pg_attribute a
WHERE a.attnum > 0
AND NOT a.attisdropped
GROUP BY a.attrelid) e
ON a.attrelid=e.attrelid
WHERE a.attnum > 0
AND NOT a.attisdropped
ORDER BY a.attnum
LOOP
IF column_record.attnum = 1 THEN
v_table_ddl:='CREATE TABLE '||column_record.schema_name||'.'||column_record.table_name||' (';
ELSE
v_table_ddl:=v_table_ddl||',';
END IF;
IF column_record.attnum <= column_record.max_attnum THEN
v_table_ddl:=v_table_ddl||chr(10)||
' '||column_record.column_name||' '||column_record.column_type||' '||column_record.column_default_value||' '||column_record.column_not_null;
END IF;
END LOOP;
firstrec := TRUE;
FOR constraint_rec IN
SELECT conname, pg_get_constraintdef(c.oid) as constrainddef
FROM pg_constraint c
WHERE conrelid=(
SELECT attrelid FROM pg_attribute
WHERE attrelid = (
SELECT oid FROM pg_class WHERE relname = table_rec.relname
AND relnamespace = (SELECT ns.oid FROM pg_namespace ns WHERE ns.nspname = p_schema_name)
) AND attname='tableoid'
)
LOOP
v_table_ddl:=v_table_ddl||','||chr(10);
v_table_ddl:=v_table_ddl||'CONSTRAINT '||constraint_rec.conname;
v_table_ddl:=v_table_ddl||chr(10)||' '||constraint_rec.constrainddef;
firstrec := FALSE;
END LOOP;
v_table_ddl:=v_table_ddl||');';
RETURN NEXT v_table_ddl;
END LOOP;
END;
$BODY$
LANGUAGE plpgsql VOLATILE
COST 100;
Here is a single statement that will generate the DDL for a single table in a specified schema, including constraints.
SELECT 'CREATE TABLE ' || pn.nspname || '.' || pc.relname || E'(\n' ||
string_agg(pa.attname || ' ' || pg_catalog.format_type(pa.atttypid, pa.atttypmod) || coalesce(' DEFAULT ' || (
SELECT pg_catalog.pg_get_expr(d.adbin, d.adrelid)
FROM pg_catalog.pg_attrdef d
WHERE d.adrelid = pa.attrelid
AND d.adnum = pa.attnum
AND pa.atthasdef
),
'') || ' ' ||
CASE pa.attnotnull
WHEN TRUE THEN 'NOT NULL'
ELSE 'NULL'
END, E',\n') ||
coalesce((SELECT E',\n' || string_agg('CONSTRAINT ' || pc1.conname || ' ' || pg_get_constraintdef(pc1.oid), E',\n' ORDER BY pc1.conindid)
FROM pg_constraint pc1
WHERE pc1.conrelid = pa.attrelid), '') ||
E');'
FROM pg_catalog.pg_attribute pa
JOIN pg_catalog.pg_class pc
ON pc.oid = pa.attrelid
AND pc.relname = 'table_name'
JOIN pg_catalog.pg_namespace pn
ON pn.oid = pc.relnamespace
AND pn.nspname = 'schema_name'
WHERE pa.attnum > 0
AND NOT pa.attisdropped
GROUP BY pn.nspname, pc.relname, pa.attrelid;
If you have PgAdmin4, then open it. Go to your database--> schema---> table--> right click on table name whose create script you want---> Scripts---> CREATE SCRIPT
Here is a bit improved version of shekwi's query.
It generates the primary key constraint and is able to handle temporary tables:
with pkey as
(
select cc.conrelid, format(E',
constraint %I primary key(%s)', cc.conname,
string_agg(a.attname, ', '
order by array_position(cc.conkey, a.attnum))) pkey
from pg_catalog.pg_constraint cc
join pg_catalog.pg_class c on c.oid = cc.conrelid
join pg_catalog.pg_attribute a on a.attrelid = cc.conrelid
and a.attnum = any(cc.conkey)
where cc.contype = 'p'
group by cc.conrelid, cc.conname
)
select format(E'create %stable %s%I\n(\n%s%s\n);\n',
case c.relpersistence when 't' then 'temporary ' else '' end,
case c.relpersistence when 't' then '' else n.nspname || '.' end,
c.relname,
string_agg(
format(E'\t%I %s%s',
a.attname,
pg_catalog.format_type(a.atttypid, a.atttypmod),
case when a.attnotnull then ' not null' else '' end
), E',\n'
order by a.attnum
),
(select pkey from pkey where pkey.conrelid = c.oid)) as sql
from pg_catalog.pg_class c
join pg_catalog.pg_namespace n on n.oid = c.relnamespace
join pg_catalog.pg_attribute a on a.attrelid = c.oid and a.attnum > 0
join pg_catalog.pg_type t on a.atttypid = t.oid
where c.relname = :table_name
group by c.oid, c.relname, c.relpersistence, n.nspname;
Use table_name parameter to specify the name of the table.
This is the variation that works for me:
pg_dump -U user_viktor -h localhost unit_test_database -t floorplanpreferences_table --schema-only
In addition, if you're using schemas, you'll of course need to specify that as well:
pg_dump -U user_viktor -h localhost unit_test_database -t "949766e0-e81e-11e3-b325-1cc1de32fcb6".floorplanpreferences_table --schema-only
You will get an output that you can use to create the table again, just run that output in psql.
pg_dump -h XXXXXXXXXXX.us-west-1.rds.amazonaws.com -U anyuser -t tablename -s
Like the other answers mentioned, there is no built in function that does this.
Here is a function that attempts to get all of the information that would be needed to replicate the table - or to compare deployed and checked in ddl.
This function outputs:
columns (w/ precision, null/not-null, default value)
constraints
indexes
CREATE OR REPLACE FUNCTION public.show_create_table(
in_schema_name varchar,
in_table_name varchar
)
RETURNS text
LANGUAGE plpgsql VOLATILE
AS
$$
DECLARE
-- the ddl we're building
v_table_ddl text;
-- data about the target table
v_table_oid int;
-- records for looping
v_column_record record;
v_constraint_record record;
v_index_record record;
BEGIN
-- grab the oid of the table; https://www.postgresql.org/docs/8.3/catalog-pg-class.html
SELECT c.oid INTO v_table_oid
FROM pg_catalog.pg_class c
LEFT JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace
WHERE 1=1
AND c.relkind = 'r' -- r = ordinary table; https://www.postgresql.org/docs/9.3/catalog-pg-class.html
AND c.relname = in_table_name -- the table name
AND n.nspname = in_schema_name; -- the schema
-- throw an error if table was not found
IF (v_table_oid IS NULL) THEN
RAISE EXCEPTION 'table does not exist';
END IF;
-- start the create definition
v_table_ddl := 'CREATE TABLE ' || in_schema_name || '.' || in_table_name || ' (' || E'\n';
-- define all of the columns in the table; https://stackoverflow.com/a/8153081/3068233
FOR v_column_record IN
SELECT
c.column_name,
c.data_type,
c.character_maximum_length,
c.is_nullable,
c.column_default
FROM information_schema.columns c
WHERE (table_schema, table_name) = (in_schema_name, in_table_name)
ORDER BY ordinal_position
LOOP
v_table_ddl := v_table_ddl || ' ' -- note: two char spacer to start, to indent the column
|| v_column_record.column_name || ' '
|| v_column_record.data_type || CASE WHEN v_column_record.character_maximum_length IS NOT NULL THEN ('(' || v_column_record.character_maximum_length || ')') ELSE '' END || ' '
|| CASE WHEN v_column_record.is_nullable = 'NO' THEN 'NOT NULL' ELSE 'NULL' END
|| CASE WHEN v_column_record.column_default IS NOT null THEN (' DEFAULT ' || v_column_record.column_default) ELSE '' END
|| ',' || E'\n';
END LOOP;
-- define all the constraints in the; https://www.postgresql.org/docs/9.1/catalog-pg-constraint.html && https://dba.stackexchange.com/a/214877/75296
FOR v_constraint_record IN
SELECT
con.conname as constraint_name,
con.contype as constraint_type,
CASE
WHEN con.contype = 'p' THEN 1 -- primary key constraint
WHEN con.contype = 'u' THEN 2 -- unique constraint
WHEN con.contype = 'f' THEN 3 -- foreign key constraint
WHEN con.contype = 'c' THEN 4
ELSE 5
END as type_rank,
pg_get_constraintdef(con.oid) as constraint_definition
FROM pg_catalog.pg_constraint con
JOIN pg_catalog.pg_class rel ON rel.oid = con.conrelid
JOIN pg_catalog.pg_namespace nsp ON nsp.oid = connamespace
WHERE nsp.nspname = in_schema_name
AND rel.relname = in_table_name
ORDER BY type_rank
LOOP
v_table_ddl := v_table_ddl || ' ' -- note: two char spacer to start, to indent the column
|| 'CONSTRAINT' || ' '
|| v_constraint_record.constraint_name || ' '
|| v_constraint_record.constraint_definition
|| ',' || E'\n';
END LOOP;
-- drop the last comma before ending the create statement
v_table_ddl = substr(v_table_ddl, 0, length(v_table_ddl) - 1) || E'\n';
-- end the create definition
v_table_ddl := v_table_ddl || ');' || E'\n';
-- suffix create statement with all of the indexes on the table
FOR v_index_record IN
SELECT indexdef
FROM pg_indexes
WHERE (schemaname, tablename) = (in_schema_name, in_table_name)
LOOP
v_table_ddl := v_table_ddl
|| v_index_record.indexdef
|| ';' || E'\n';
END LOOP;
-- return the ddl
RETURN v_table_ddl;
END;
$$;
example
SELECT * FROM public.show_create_table('public', 'example_table');
produces
CREATE TABLE public.example_table (
id bigint NOT NULL DEFAULT nextval('test_tb_for_show_create_on_id_seq'::regclass),
name character varying(150) NULL,
level character varying(50) NULL,
description text NOT NULL DEFAULT 'hello there!'::text,
CONSTRAINT test_tb_for_show_create_on_pkey PRIMARY KEY (id),
CONSTRAINT test_tb_for_show_create_on_level_check CHECK (((level)::text = ANY ((ARRAY['info'::character varying, 'warn'::character varying, 'error'::character varying])::text[])))
);
CREATE UNIQUE INDEX test_tb_for_show_create_on_pkey ON public.test_tb_for_show_create_on USING btree (id);
YOu can also use a free DB management tool, such as DBeaver, which allows you to view DDL for the tables, here's an example:
DataGrip has the same functionality as pgAdmin. You can right click on a table and you will see option to auto-generate create table statement.
Use this and get your output in ddl.out file
~/bin/pg_dump -p 30000 -d <db_name> -U <db_user> --schema=<schema_name> -t <table_name> --schema-only >> /tmp/ddl.out
So this will generate DDL in the path: /tmp/ddl.out
Here is a solution if you don't want to create a function and just want the query to create a basic table structure.
select 'CREATE TABLE ' || table_name ||'(' ||STRING_AGG (
column_name || ' ' || data_type ,
','
ORDER BY
table_name,
ordinal_position
) ||');'
from
information_schema.columns
where table_schema = 'public'
group by
table_name
A simple solution, in pure single SQL.
You get the idea, you may extend it to more attributes you like to show.
with c as (
SELECT table_name, ordinal_position,
column_name|| ' ' || data_type col
, row_number() over (partition by table_name order by ordinal_position asc) rn
, count(*) over (partition by table_name) cnt
FROM information_schema.columns
WHERE table_name in ('pg_index', 'pg_tables')
order by table_name, ordinal_position
)
select case when rn = 1 then 'create table ' || table_name || '(' else '' end
|| col
|| case when rn < cnt then ',' else '); ' end
from c
order by table_name, rn asc;
Output:
create table pg_index(indexrelid oid,
indrelid oid,
indnatts smallint,
indisunique boolean,
indisprimary boolean,
indisexclusion boolean,
indimmediate boolean,
indisclustered boolean,
indisvalid boolean,
indcheckxmin boolean,
indisready boolean,
indislive boolean,
indisreplident boolean,
indkey ARRAY,
indcollation ARRAY,
indclass ARRAY,
indoption ARRAY,
indexprs pg_node_tree,
indpred pg_node_tree);
create table pg_tables(schemaname name,
tablename name,
tableowner name,
tablespace name,
hasindexes boolean,
hasrules boolean,
hastriggers boolean,
rowsecurity boolean);
Another easy option was to use [HeidiSQL client][1] for PostgreSQL database.
How to go into the database tab where all the databases and tables are listed.
Click on any of the table/View which you wanted to see the DDL/create a statement of the particular table.
Now there this client do the following jobs for you for that table, on the right-hand side windows:
The first window would be for data of table
Second for your SQL Host information
Third for database-level information like which tables and what is the size
Forth which we are more concern about table/view information tab will have the create table statement readily available for you.
I can not show you in the snapshot as working with confidential data, Try it with yourself and let me know if any issues you guys found.
In pgadminIII database>>schemas>>tables>> right click on 'Your table'>>scripts>> 'Select any one (Create,Insert,Update,Delete..)'
Here is a query with some edits,
select 'CREATE TABLE ' || a.attrelid::regclass::text || '(' ||
string_agg(a.attname || ' ' || pg_catalog.format_type(a.atttypid,
a.atttypmod)||
CASE WHEN
(SELECT substring(pg_catalog.pg_get_expr(d.adbin, d.adrelid) for 128)
FROM pg_catalog.pg_attrdef d
WHERE d.adrelid = a.attrelid AND d.adnum = a.attnum AND a.atthasdef) IS NOT NULL THEN
' DEFAULT '|| (SELECT substring(pg_catalog.pg_get_expr(d.adbin, d.adrelid) for 128)
FROM pg_catalog.pg_attrdef d
WHERE d.adrelid = a.attrelid AND d.adnum = a.attnum AND a.atthasdef)
ELSE
'' END
||
CASE WHEN a.attnotnull = true THEN
' NOT NULL'
ELSE
'' END,E'\n,') || ');'
FROM pg_catalog.pg_attribute a join pg_class on a.attrelid=pg_class.oid
WHERE a.attrelid::regclass::varchar =
'TABLENAME_with_or_without_schema'
AND a.attnum > 0 AND NOT a.attisdropped and pg_class.relkind='r'
group by a.attrelid;
To generate the SQL (DDL) behind the creation of a particular table.
We can simply use this SQL query -
SHOW TABLE your_schema_name.your_table_name