I am using the below sybase version of
Adaptive Server Enterprise/15.0.3/EBF 16375/P/NT (IX86)/Windows 2003/ase1503/2670/32-bit/OPT/Mon Nov 17 17:49:12 2008
Trying to work upon a simple while loop, however it runs only once. Using interactive sql GUI to run it.
declare #i int, #j int
set #i=1
set #j=5
while(#i<=#j)
begin
select '1'
set #i=#i+1
end
Related
Background
A service running same tasks against a number of similar PostgreSQL instances. Most environments are on version 10, but some are on 9. Upgrading them is not an option in short term at least.
Problem
To improve performance, we used PostgreSQL 10 feature CREATE STATISTICS. It works just fine on on environments on v10, but is not supported on v9.
One way to deal with it could be to duplicate each script that uses CREATE STATISTICS, maintain a copy of it without those statement and choose which script to run at application level. I'd like to avoid it as it's a lot of duplicated code to maintain.
I've tried to cheat it by only creating the statistics if the script finds appropriate version (code below), but on v9 it still gets picked up as a syntax error.
DO $$
-- server_version_num is a version number melted to an integer:
-- 9.6.6 -> 09.06.06 -> 90606
-- 10.0.1 -> 10.00.01 -> 100001
DECLARE pg_version int := current_setting('server_version_num');
BEGIN
IF pg_version >= 100000 THEN
CREATE STATISTICS table_1_related_col_group_a (NDISTINCT)
ON col_a1, col_a2
FROM schema_1.table_1;
CREATE STATISTICS table_2_related_col_group_b (NDISTINCT)
ON col_b1, col_b2, col_b3
FROM schema_1.table_2;
END IF;
END $$ LANGUAGE plpgsql;
Question
Is there a way to run a script that has an unsupported statement like CREATE STATISTICS in it without tipping postgres 9 off?
Use dynamic SQL. It won't be evaluated unless executed.
DO $$
-- server_version_num is a version number melted to an integer:
-- 9.6.6 -> 09.06.06 -> 90606
-- 10.0.1 -> 10.00.01 -> 100001
DECLARE pg_version int := current_setting('server_version_num');
BEGIN
IF pg_version >= 100000 THEN
EXECUTE 'CREATE STATISTICS table_1_related_col_group_a (NDISTINCT)
ON col_a1, col_a2
FROM schema_1.table_1;
CREATE STATISTICS table_2_related_col_group_b (NDISTINCT)
ON col_b1, col_b2, col_b3
FROM schema_1.table_2;';
END IF;
END $$ LANGUAGE plpgsql;
I'm trying to run PL/SQL code like
DECLARE
sum INTEGER := 0;
BEGIN
LOOP
sum := sum + 1;
IF sum > 10 THEN
EXIT;
END IF;
END LOOP;
END
But the code above and, in fact, any PL/SQL code is not getting executed and throws errors.
You can execute PL/SQL statements against Db2 on Cloud when using the proper client and when the Oracle compatibility mode is active. Not every database client supports executing the statements because of their structure, handling of terminators and the way PL/SQL and SQL/PL statements and procedures (in general) are called.
Recently I was told that numbers generated using rand() in SQL Server 2008 returns predictable number sequence. Is it true?
declare #RandNum int
set #RandNum=RAND()*100
print #RandNum
I'm trying to create a trigger and am getting the error "[Error] PLS-00357: PLS-00357: Table, View Or Sequence reference 'table_data_seq.nextval' not allowed in this context"
I have read a lot of information on the error and cannot find the difference between the PL/SQL that people say works and mine. Below is my code for creating the trigger ( keeping it as basic as possible to get it working ):
create or replace trigger tr_tabData
before insert on table_data
for each row
DECLARE
seq_value int;
begin
select table_data_sq.nextval into seq_value from dual;
end;
Oracle version is 10.2.0.5
As requested here it the script for the sequence:
DROP SEQUENCE DATA_ADMIN.TABLE_DATA_SQ;
CREATE SEQUENCE DATA_ADMIN.TABLE_DATA_SQ
START WITH 1000
MAXVALUE 999999999999999999999999999
MINVALUE 1
NOCYCLE
CACHE 20
NOORDER;
This is not possible before 11g. You can use sequence_name.NEXTVAL in regular assignments from 11g not before that, and that by the following:
select TABLE_DATA_SQ.NEXTVAL into :NEW.YourID from dual;
It turned out that this was a bug with the TOAD version and my Oracle database version. The same code in SQL*Plus and SQL Developer worked as expected.
I want to execute multiple statements from my data access layer using C# dan IBM's DB2 data provider.
(environment: DB2/AS400 os version: V5R4)
eg in TSQL:
declare varA integer;
select varA= count(*) from tableA;
select * from tableB where col1 <= varA
with SQL server ; I can concatenate those 3 statements into a string
and assign the text to DBCommand.CommandText.
How to execute multiple statements(compound statement) against DB2 database via DBCommand (using IBM DB2 data provider)
I tried using begin and end block but still failed
BEGIN
statement1;
statement2;
statement3;
END
Thank you
I do not think it's possible.
I had already tried something similar some time ago, and the only solution I found is to dynamically create a stored procedure, calling it, and finally delete it.