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include/master-slave.inc
[connection master]
# Part 1 - initial creation
connection master;
CREATE DATABASE db1;
USE db1;
CREATE TABLE t1 (val INT);
CREATE TRIGGER val_sum BEFORE INSERT ON t1 FOR EACH ROW SET @sum = @sum + NEW.val + 1;
SET @sum=0;
INSERT INTO t1 VALUES (10), (20), (30);
SELECT ACTION_STATEMENT AS ACTION_STATEMENT_Master FROM INFORMATION_SCHEMA.TRIGGERS WHERE TRIGGER_NAME='val_sum';
ACTION_STATEMENT_Master
SET @sum = @sum + NEW.val + 1
connection slave;
SELECT ACTION_STATEMENT AS ACTION_STATEMENT_Slave FROM INFORMATION_SCHEMA.TRIGGERS WHERE TRIGGER_NAME='val_sum';
ACTION_STATEMENT_Slave
SET @sum = @sum + NEW.val + 1
# Part 2 - CREATE IF NOT EXISTS (on a existing trigger)
connection master;
CREATE TRIGGER IF NOT EXISTS val_sum AFTER INSERT ON t1 FOR EACH ROW SET @sum = @sum + NEW.val + 2;
Warnings:
Note 1359 Trigger 'db1.val_sum' already exists
SELECT ACTION_STATEMENT AS ACTION_STATEMENT_Master FROM INFORMATION_SCHEMA.TRIGGERS WHERE TRIGGER_NAME='val_sum';
ACTION_STATEMENT_Master
SET @sum = @sum + NEW.val + 1
connection slave;
SELECT ACTION_STATEMENT AS ACTION_STATEMENT_Slave FROM INFORMATION_SCHEMA.TRIGGERS WHERE TRIGGER_NAME='val_sum';
ACTION_STATEMENT_Slave
SET @sum = @sum + NEW.val + 1
# Part 3 - CREATE OR REPLACE (on a existing trigger)
connection master;
CREATE OR REPLACE TRIGGER val_sum BEFORE INSERT ON t1 FOR EACH ROW SET @sum = @sum + NEW.val + 3;
SELECT ACTION_STATEMENT AS ACTION_STATEMENT_Master FROM INFORMATION_SCHEMA.TRIGGERS WHERE TRIGGER_NAME='val_sum';
ACTION_STATEMENT_Master
SET @sum = @sum + NEW.val + 3
connection slave;
SELECT ACTION_STATEMENT AS ACTION_STATEMENT_Slave FROM INFORMATION_SCHEMA.TRIGGERS WHERE TRIGGER_NAME='val_sum';
ACTION_STATEMENT_Slave
SET @sum = @sum + NEW.val + 3
# Clearing up
connection master;
DROP TRIGGER val_sum;
DROP TABLE t1;
DROP TRIGGER IF EXISTS val_sum;
Warnings:
Note 1360 Trigger does not exist
DROP TRIGGER random_trigger;
ERROR HY000: Trigger does not exist
DROP DATABASE db1;
DROP TRIGGER IF EXISTS val_sum;
ERROR 3D000: No database selected
# Syncing slave with master
connection slave;
DROP TRIGGER val_sum;
ERROR HY000: Trigger does not exist
include/rpl_end.inc
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