I can select(in Oracle) from postgers with dblink, and its work fine.
But if i create procedure with this select:
Procedure:
`CREATE OR REPLACE PROCEDURE test_merge as
begin
MERGE INTO CARDS C
USING (SELECT c."card_id", 1, n."channel"
FROM "table_1"#DBLINK_NAME n
JOIN
"table_2"#DBLINK_NAME c
ON n."card_id" = c."id"
WHERE n."type" = 'param1') B
ON (C.CARDID = B."card_id")
WHEN MATCHED
THEN
UPDATE SET C.SENDR = 1, C.PHONE = '+' || B."channel";
end;`
ORA-04052: error occurred when looking up remote object postgres.table_name#DBLINK_NAME ORA-00604: error occurred at recursive SQL level 1 ORA-28500: connection from ORACLE to a non-Oracle system return this message: ERROR: relation "postgres.card" does
Have any idea?
Oracle 11g
Thanks!
It was necessary to specify the owner of the database on postgre. In my case, it was enough to specify "public". in the procedure. before accessing tables.
"public"."table_1"#DBLINK_NAME
Related
I created a temporary table with sqlalchemy (with an underlying postgres database) that is going to be joined with a database table. However, in some cases when a value is empty '' then postgres throws the error:
failed to find conversion function from unknown to text
SqlAlchemy assembles everything to the following context
[SQL: 'WITH temp_table AS \n(SELECT %(param_1)s AS id, %(param_2)s AS email, %(param_3)s AS phone)\n SELECT campaigns_contact.id, campaigns_contact.email, campaigns_contact.phone \nFROM campaigns_contact JOIN temp_table ON temp_table.id = campaigns_contact.id AND temp_table.email = campaigns_contact.email AND temp_table.phone = campaigns_contact.phone'] [parameters: {'param_1': 83, 'param_2': '', 'param_3': '+1234567890'}]
I assemble the temporary table as follows
stmts = []
for row in import_data:
row_values = [literal(row[value]).label(value) for value in values]
stmts.append(select(row_values))
subquery = union_all(*stmts)
subquery = subquery.cte(name="temp_table")
The problem seems to be the part here
...%(param_2)s AS email...
which after replacing the param_2 results in
...'' AS email...
which will cause the error mentioned above.
One way to solve the issue is to perform a cast
...''::text AS email...
However, I don't know how to perform ::text cast with sqlalchemy!?
I have imported one shapefile named tc_bf25 using qgis, and the following is my python script typed in pyscripter,
import sys
import psycopg2
conn = psycopg2.connect("dbname = 'routing_template' user = 'postgres' host = 'localhost' password = '****'")
cur = conn.cursor()
query = """
ALTER TABLE tc_bf25 ADD COLUMN source integer;
ALTER TABLE tc_bf25 ADD COLUMN target integer;
SELECT assign_vertex_id('tc_bf25', 0.0001, 'the_geom', 'gid')
;"""
cur.execute(query)
query = """
CREATE OR REPLACE VIEW tc_bf25_ext AS
SELECT *, startpoint(the_geom), endpoint(the_geom)
FROM tc_bf25
;"""
cur.execute(query)
query = """
CREATE TABLE node1 AS
SELECT row_number() OVER (ORDER BY foo.p)::integer AS id,
foo.p AS the_geom
FROM (
SELECT DISTINCT tc_bf25_ext.startpoint AS p FROM tc_bf25_ext
UNION
SELECT DISTINCT tc_bf25_ext.endpoint AS p FROM tc_bf25_ext
) foo
GROUP BY foo.p
;"""
cur.execute(query)
query = """
CREATE TABLE network1 AS
SELECT a.*, b.id as start_id, c.id as end_id
FROM tc_bf25_ext AS a
JOIN node AS b ON a.startpoint = b.the_geom
JOIN node AS c ON a.endpoint = c.the_geom
;"""
cur.execute(query)
query = """
ALTER TABLE network1 ADD COLUMN shape_leng double precision;
UPDATE network1 SET shape_leng = length(the_geom)
;"""
cur.execute(query)
I got the error at the second cur.execute(query),
But I go to pgAdmin to check result, even though no error occurs, the first cur.execute(query) didn't add new columns in my table.
What mistake did I make？ And how to fix it？
I am working with postgresql 8.4, python 2.7.6 under Windows 8.1 x64.
When using psycopg2, autocommit is set to False by default. The first two statements both refer to table tc_bf25, but the first statement makes an uncommitted change to the table. So try running conn.commit() between statements to see if this resolves the issue
You should run each statement individually. Do not combine multiple statements into a semicolon separated series and run them all at one. It makes error handling and fetching of results much harder.
If you still have the problem once you've made that change, show the exact statement you're having the problem with.
Just to add to #Talvalin you can enable auto-commit by adding
psycopg2.connect("dbname='mydb',user='postgres',host ='localhost',password = '****'")
conn.autocommit = True
after you connect to your database using psycopg2
DROP TABLE IF EXISTS Pose ;
results in the error
Error code -1, SQL state 42X01: Syntax error: Encountered "EXISTS" at line 1, column 15.
I'm running this from inside NetBeans 7.3 using the default Derby sample db.
Derby does not currently support IF EXISTS
Are you trying to create a table? If yes, this is what you should do:
public void createTables() throws SQLException {
Statement statement = getConnection().createStatement();
System.out.println("Checking database for table");
DatabaseMetaData databaseMetadata = getConnection().getMetaData();
ResultSet resultSet = databaseMetadata.getTables(null, null, "PATIENT", null);
if (resultSet.next()) {
System.out.println("TABLE ALREADY EXISTS");
} else {
//language=MySQL
statement.execute("CREATE TABLE Patient (" +
"CardNumber CHAR(10) NOT NULL PRIMARY KEY, " +
" FirstName CHAR(50)," +
" MiddleName CHAR(50)," +
" LastName CHAR(50) )");
}
}
Remember to use all caps for the table name you pass into databaseMetadata.getTables(...)
The MySQL 6.0 syntax for declaring a table is this:
CREATE TABLE [IF NOT EXISTS] tableName ...
and the MySQL syntax for removing a table is this:
DROP TABLE [IF EXISTS] tableName ...
These clauses are MySQL extensions which are not part of the ANSI/ISO SQL Standard. This functionality may be peculiar to MySQL: I can't find anything similar documented for Derby, Postgres, Oracle, or DB2.
The best alternative I can find is to query the system tables to see if the table exists.
select count(*) from sys.systables where tablename = 'YOUR_TABLE_NAME'"
I had a similar issue dropping stored procedures. They can be queried using this statement.
select count(*) from sys.sysaliases where alias = 'YOUR_STORED_PROCEDURE_NAME'
If someone is looking to drop and create a table in an sql file that is Run with Spring test framework, Check https://stackoverflow.com/a/47459214/3584693 for an answer that ensures that no exception is thrown when drop table is invoked when said table doesn't exist.
I have a database in postgreSQL. I want to read some data from there, but I get an error (column anganridref does not exist) when I execute my command.
Here is my NpgsqlCommand:
cmd.CommandText = "select * from angebot,angebotstatus,anrede where anrid=anganridref and anstaid=anganstaidref";
and my 3 tables
the names of my columns are rights. So I don't understand why that error comes. Someone can explain me why it does crash? Its not the problem of large and lowercase.
You are not prefixing your column names in the where clause:
select *
from angebot,
angebotstatus,
anrede
where anrid = anganridref <-- missing tablenames for the columns
and anstaid = anganstaidre
It's also recommended to use an explicit JOIN instead of the old SQL 89 implicit join syntax:
select *
from angebot
join angebotstatus on angebot.aaaa = angebotstatus.bbbb
join anrede on angebot.aaaa = anrede.bbbb
How can we identify the triggers associated with a table in a Informix database?
select tabname,a.* from systriggers a, systables b
where a.tabid=b.tabid and tabname="TableName"
or
dbschema -d db -t tablename
The information is in the SysTriggers and SysTrigBody system catalog tables — primarily SysTriggers. You can find the description of these (and all other system catalog tables) in the Informix Guide to SQL: Reference manual. You can find that at the Informix 11.70 Info Centre. In particular, the tabid (from SysTables) identifies the triggers for a table in SysTriggers.
As Jonathan answered you can use systriggers and other system catalog tables. I used them in my schema reporting utility: http://code.activestate.com/recipes/576621-dump-informix-schema-to-text/
This utility can work with Python and ODBC or with Jython and JDBC. It shows info about trigger for every table like:
--- triggers ---
defbookacc defbookacc_dtrg D
defbookacc defbookacc_itrg I
defbookacc defbookacc_utrg U
mc_loadman loadman_del D
and then shows body for each trigger.
--OBTIENE LOS TRIGGERS DE LA TABLA:
SELECT T.tabid, TRIM(T.owner) owner, T.tabname, TR.trigid, TRIM(TR.owner) tr_owner, TR.trigname, TR.event, TR.old, TR.new, TR.mode, TRIM(TR.collation) collation,
TB.datakey, TB.seqno, TB.data
FROM systables T, systriggers TR, systrigbody TB
WHERE T.tabname = 'table_name' AND TR.tabid = T.tabid AND TB.trigid = TR.trigid AND TB.datakey IN ('D', 'A')
ORDER BY TB.trigid, TB.datakey DESC, TB.seqno ASC;
--Event: type of triggering event: D = Delete trigger, I = Insert trigger ,U = Update trigger ,S = Select trigger , d = INSTEAD OF Delete trigger , i = INSTEAD OF Insert trigger ,u = INSTEAD OF Update trigger (IDS)
--Old: Name of value before update.
--New: Name of value after update.
--DataKey: Code specifying the type of data: A = ASCII text for the body, triggered actions, B = Linearized code for the body, D = English text for the header, trigger definition, H = Linearized code for the header, S = Linearized code for the symbol table.