$$LANGUAGEplpgsql;CREATEORREPLACEFUNCTIONinner_func()RETURNSintegerAS$$DECLAREstack text;BEGINGETDIAGNOSTICS stack=PG_CONTEXT; RAISE NOTICE E’--- Call Stack ---\n%’, stack;RETURN1;END; $$LANGUAGEplpgsql;SELECT
RAISE ’DuplicateuserID:%’, user_idUSINGERRCODE=’unique_violation’; RAISE ’DuplicateuserID:%’, user_idUSINGERRCODE=’23505’; There is a second RAISE syntax in which the main argument is the condition name or SQLSTATE to be reported, for example: RAISEdivision_by_zero;RAISESQLSTATE ’...
DO$$ DECLAREuser_ageINT := 18;BEGINIFuser_age > 18 THENRAISENOTICE 'Access Granted';ENDIF;IFuser_age < 18 THENRAISENOTICE 'Access Denied';ELSERAISENOTICE 'Try Again';ENDIF;RAISENOTICE 'Control Shifted out of IF Block;END$$; This time the “FALSE” condition is successfully tackled using...
This guide explains how to declare variables in PostgreSQL, provides syntax, and includes examples to help users leverage variables effectively in their queries and functions. Syntax: Variables in PostgreSQL are declared using the DECLARE keyword within the DO block or CREATE FUNCTION. Here's the ba...
CREATE OR REPLACE FUNCTION f2() RETURNS void LANGUAGE plpgsql AS $$ DECLARE rec record; BEGIN FOR rec IN SELECT * FROM t1 LOOP RAISE NOTICE '%', rec.c; /* Bug1: Columns ”c” does not exist in table “t” */ END LOOP; END; $$; We get the following output: CREATE ...
RAISE NOTICE 'Welcome to Commandprompt'; END LOOP; END; $$ In this code, we use the for loop to iterate over a range “1-5”. Within the loop, we use the “raise notice” statement to display a message of our choice each time the loop iterates. Here is the resultant outcome: ...
WHERE job_id LIKE '%MANAGER%' AND manager_id > 400 ORDER BY last_name ) LOOP RAISE NOTICE 'Name = %, Job=%', item.last_name, item.job_id; END LOOP; END $$; Summary For more information, seeCursorsandBasic Statementsin thePostgreSQL documentation....
IF var_NumItems > 100 THEN RAISE NOTICE 'EXECUTING LogLargeOrder - %s',var_OrderID; RAISE NOTICE 'Num Items: %s', var_NumItems; ELSE RAISE NOTICE 'EXECUTING LogSmallOrder - %s',var_OrderID; RAISE NOTICE 'Num Items: %s', var_NumItems; END IF; END LOOP...
CREATE OR REPLACE FUNCTION f1() RETURNS void AS $$ DECLARE r record; BEGIN FOR r IN EXECUTE 'SELECT * FROM t1' LOOP RAISE NOTICE '%', r.c; END LOOP; END; $$ LANGUAGE plpgsql SET plpgsql.enable_check TO false; A usage of plpgsql_check adds a small overhead (when passive mode is...
If you store a value whose precision exceeds the declared precision, PostgreSQL will raise an error as shown in the following example: INSERT INTO products (name, price) VALUES('Phone',123456.21); PostgreSQL issued the following error: ERROR: numeric field overflow DETAIL: A field with precision...