I have a requirement where I need to check for table. If exists, drop it else do nothing. For that I written below code.
Code:
T_NAME="V_"`echo ${PARAM_BASE} | cut -d'_' -f4-`
tab_name="UV_"${T_NAME}
query_et()
{
bteq << EOBTQ | grep '^>' | sed -e "s/^>//"
.LOGON DEVEDW1/<username>,<password>;
SELECT count(*) from dbc.tables where databasename = '${SCHE_NAME}' and tablename = '${tab_name}' having count(*) > 0;
.IF ERRORCODE <> 0 THEN .QUIT 10;
.IF ACTIVITYCOUNT = 1 THEN .GOTO DROP_TAB;
.LABEL DROP_TAB;
DROP TABLE ${SCHE_NAME}.${tab_name};
.LOGOFF
.QUIT;
EOBTQ
}
The problem is, even if table does not exists, it goes to DROP statement... I do not understand why it goes there even after I put ACTIV ITY COUNT = 1. Can someonne please help me to figure out the problem?
Hi guys
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Discussion started by: xiaogeji
3 Replies
LEARN ABOUT REDHAT
drop_trigger
DROP TRIGGER(7) SQL Commands DROP TRIGGER(7)NAME
DROP TRIGGER - remove a trigger
SYNOPSIS
DROP TRIGGER name ON table [ CASCADE | RESTRICT ]
INPUTS
name The name of an existing trigger.
table The name (optionally schema-qualified) of a table.
CASCADE
Automatically drop objects that depend on the trigger.
RESTRICT
Refuse to drop the trigger if there are any dependent objects. This is the default.
OUTPUTS
DROP TRIGGER
The message returned if the trigger is successfully dropped.
ERROR: DropTrigger: there is no trigger name on relation "table"
This message occurs if the trigger specified does not exist.
DESCRIPTION
DROP TRIGGER will remove an existing trigger definition. To execute this command the current user must be the owner of the table for which
the trigger is defined.
EXAMPLES
Destroy the if_dist_exists trigger on table films:
DROP TRIGGER if_dist_exists ON films;
COMPATIBILITY
SQL92 There is no DROP TRIGGER statement in SQL92.
SQL99 The DROP TRIGGER statement in PostgreSQL is incompatible with SQL99. In SQL99, trigger names are not local to tables, so the command
is simply DROP TRIGGER name.
SEE ALSO
CREATE TRIGGER [create_trigger(7)]
SQL - Language Statements 2002-11-22 DROP TRIGGER(7)