I am have big problem with Postgresql.
I'm trying to insert record to postgres.
But i had error:
The relation "member_orderinfo2" does not exist. But this table had exist when i'm insert record.
This is my query to insert
insert into "member_orderinfo2"(order_id,slim_code,order_date,customer_order_number,ship_date,deliver_company,deliver_number,deliver_address,product_code,product_name,amount,unit_price,total_cost,order_customer_name,ship_status) values
( '30059078','4170906','20131118','15754727-03直送','0','ﾒｰｶｰ直送','','京都府綾部市味方町１京ｾﾗｺﾐｭﾆｹｰｼｮﾝｼｽﾃﾑ','0996381','RD151-50SN(ｼﾞﾕｳﾘﾖｳﾀﾞ','5','5120.00','25600','梶野様','入荷待' )
What is error ???
It looks like case sensitivity issue.
You used a double quotes for table name - "member_orderinfo2" - it means so table have to be named exactly member_orderinfo2 with only lower chars. Double quotes are used for case sensitive identifiers. Usually better don't use it when it is possible - are necessary when used identifier is keyword - so don't use case sensitive identifiers and don't use keywords as identifiers.
Related
I have a db table say, persons in Postgres handed down by another team that has a column name say, "first_Name". Now am trying to use PG commander to query this table on this column-name.
select * from persons where first_Name="xyz";
And it just returns
ERROR: column "first_Name" does not exist
Not sure if I am doing something silly or is there a workaround to this problem that I am missing?
Identifiers (including column names) that are not double-quoted are folded to lowercase in PostgreSQL. Column names that were created with double-quotes and thereby retained uppercase letters (and/or other syntax violations) have to be double-quoted for the rest of their life:
"first_Name"
Values (string literals / constants) are enclosed in single quotes:
'xyz'
So, yes, PostgreSQL column names are case-sensitive (when double-quoted):
SELECT * FROM persons WHERE "first_Name" = 'xyz';
Read the manual on identifiers here.
My standing advice is to use legal, lower-case names exclusively so double-quoting is never required.
To quote the documentation:
Key words and unquoted identifiers are case insensitive. Therefore:
UPDATE MY_TABLE SET A = 5;
can equivalently be written as:
uPDaTE my_TabLE SeT a = 5;
You could also write it using quoted identifiers:
UPDATE "my_table" SET "a" = 5;
Quoting an identifier makes it case-sensitive, whereas unquoted names are always folded to lower case (unlike the SQL standard where unquoted names are folded to upper case). For example, the identifiers FOO, foo, and "foo" are considered the same by PostgreSQL, but "Foo" and "FOO" are different from these three and each other.
If you want to write portable applications you are advised to always quote a particular name or never quote it.
The column names which are mixed case or uppercase have to be double quoted in PostgresQL. So best convention will be to follow all small case with underscore.
if use JPA I recommend change to lowercase schema, table and column names, you can use next intructions for help you:
select
psat.schemaname,
psat.relname,
pa.attname,
psat.relid
from
pg_catalog.pg_stat_all_tables psat,
pg_catalog.pg_attribute pa
where
psat.relid = pa.attrelid
change schema name:
ALTER SCHEMA "XXXXX" RENAME TO xxxxx;
change table names:
ALTER TABLE xxxxx."AAAAA" RENAME TO aaaaa;
change column names:
ALTER TABLE xxxxx.aaaaa RENAME COLUMN "CCCCC" TO ccccc;
You can try this example for table and column naming in capital letters. (postgresql)
//Sql;
create table "Test"
(
"ID" integer,
"NAME" varchar(255)
)
//C#
string sqlCommand = $#"create table ""TestTable"" (
""ID"" integer GENERATED BY DEFAULT AS IDENTITY primary key,
""ExampleProperty"" boolean,
""ColumnName"" varchar(255))";
SQL Query on PostgreSQL:
insert into TOKEPOOLAMT (TOKEPOOLAMT.TOKEPOOLAMTID,TOKEPOOLAMT.TOKERULEID)
values (151, 176);
Giving error:
com.edb.util.PSQLException:
ERROR: column "tokepoolamt" of relation "tokepoolamt" does not exist
But:
insert into TOKEPOOLAMT (TOKEPOOLAMTID,TOKERULEID) values (151, 176);
is working fine.
Can anybody explain why alias name with column in insert statement not working?
There are no aliases involved here. Your error is that column names in the column list of an INSERT command cannot be table-qualified. #pozs already provided the fitting quote from the manual in his comment.
I don't think it's an issue of case. I tried with both the cases.
That's missing the point. In Postgres, identifiers are folded to lower case unless double-quoted. If you double-quoted a name at creation time you preserved a case sensitive spelling and need to double-quote for the rest of the object's life - unless it was a legal, lower-case name to begin with, then quoting won't make a difference. Details:
Are PostgreSQL column names case-sensitive?
I have two tables that already have data in them and i would like to create reference via postgressql OR SQL shell. The reference should be like this:
[IMG]http://i.imgur.com/SMUEo4r.png[/IMG]
Can anyone tell me how to do that?
alter table statusi
add constraint fk_darbinieki_statusi
foreign key (id_darbinieks) references darbinieki (id_darbinieks);
Note that I used unquoted identifiers which are case insensitive.
Given your screenshot it might be that you created quoted identifiers using double quotes which are case sensitive. "ID_statusi" is a different name than ID_statusi. So maybe you need to use double quotes when running the above statement. In general, using double quotes for identifiers is not such a good idea. It creates more trouble than it's worth.
More details in the manual:
defining foreign keys:http://www.postgresql.org/docs/current/static/ddl-constraints.html#DDL-CONSTRAINTS-FK
Rules for identifiers: http://www.postgresql.org/docs/current/static/sql-syntax-lexical.html#SQL-SYNTAX-IDENTIFIERS
ALTER TABLE: http://www.postgresql.org/docs/current/static/sql-altertable.html
It seems PostgreSQL does not allow to create a database table named 'user'. But MySQL will allow to create such a table.
Is that because it is a key word? But Hibernate cannot identify any issue (even if we set the PostgreSQLDialect).
user is a reserved word and it's usually not a good idea use reserved words for identifiers (tables, columns).
If you insist on doing that you have to put the table name in double quotes:
create table "user" (...);
But then you always need to use double quotes when referencing the table. Additionally the table name is then case-sensitive. "user" is a different table name than "User".
If you want to save yourself a lot of trouble use a different name. users, user_account, ...
More details on quoted identifiers can be found in the manual: http://www.postgresql.org/docs/current/static/sql-syntax-lexical.html#SQL-SYNTAX-IDENTIFIERS
It is possible to specify tablename with JPA with next syntax:
#Table(name="\"user\"")
We had this same issue time ago, and we just changed the table name from user to app_user. Due to the use of Hibernate/JPA. We thought it would be easier this way.
Hope this little fix will help someone else.
You can create a table user in a schema other than public.
The example:
CREATE SCHEMA my_schema;
CREATE TABLE my_schema.user(...);
Trailing underscore
The SQL standard explicitly promises to never use a trailing underscore in any keyword or reserved word.
So, to avoid conflicts with any of the over a thousand keywords and reserved words used by various database engines, I name all my database identifiers with a trailing underscore. (Yes, really, over a thousand keywords reserved — I counted them.)
Change this:
CREATE TABLE user ( … ) ;
… to this:
CREATE TABLE user_ ( … ) ;
I do this as a habit for all database names: schemas, tables, columns, indexes, etc.
As an extra benefit, this practice makes quite clear in documentation, email, and such when referring to a programming language variable named user versus the database column user_. Anything with a trailing underscore is obviously from the database side.
I'm just new to pgAdmin, so I don't really know what causes these errors:
ERROR: relation "ongoingprojects" does not exist
LINE 1: SELECT * FROM ongoingProjects;
^
********** Error **********
ERROR: relation "ongoingprojects" does not exist
SQL state: 42P01
Character: 15
Even if the function/view exists in the schema. Why does it give that error? And what should I do to fix it?
Pay careful attention to the error message:
ERROR: relation "ongoingprojects" does not exist
Note that it is complaining about ongoingprojects when your SQL talks about ongoingProjects. You probably created the table with something like:
create table "ongoingProjects" ( ...
PostgreSQL folds all identifiers (table names, column names, ...) to lower case unless they are double quoted. Once you've created the table as "ongoingProjects", you'll have to double quote the name everywhere and exactly match that case:
select * from "ongoingProjects";
The usual practice with PostgreSQL is to create tables with unquoted names in lower case with word separated using underscores:
create table ongoing_projects ( ...
so that you don't have worry about quoting.
Here is the link to the relevant part of the manual
For me the issue was having a schema named differently than the database.
Two solutions:
1) Modify schema name to match db name
or
2) Prepend table in query with schema name, eg: SELECT * FROM my_schema.ongoingProjects;