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Displaying posts with tag: DROP (reset)

How to Drop the Trigger
+2 Vote Up -1Vote Down
posted by Valeriy Kravchuk on Fri 01 Feb 2013 11:49 UTC
Tags:
(edit) mysql, howto, trigger, DROP, TRN, TRG
If we speak about MySQL triggers, does anybody need a "Howto" on this topic? It must be simple if you know the trigger name to drop, just use DROP TRIGGER, as manual explains:

mysql> use test
Database changedmysql> select current_user();
+----------------+
| current_user() |
+----------------+
| root@localhost |
+----------------+
1 row in set (0.00 sec)
 
mysql> show triggers\G
*************************** 1. row ***************************
             Trigger: tr1
               Event: INSERT













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Online ALTER TABLE in MySQL 5.6
Employee_Team +1 Vote Up -0Vote Down
posted by Oracle Innodb on Sat 29 Sep 2012 16:01 UTC
Tags:
(edit) Features, innodb, index, online, alter, column, table, ddl, DROP, create
This is the low-level view of data dictionary language (DDL) operations in the InnoDB storage engine in MySQL 5.6. John Russell gave a more high-level view in his blog post April 2012 Labs Release – Online DDL Improvements.

MySQL before the InnoDB Plugin

Traditionally, the MySQL storage engine interface has taken a minimalistic approach to data definition language. The only natively supported operations were CREATE TABLE, DROP TABLE and RENAME TABLE. Consider the following example:

CREATE TABLE t(a INT);
INSERT INTO t VALUES (1),(2),(3);
CREATE INDEX a ON t(a);
DROP TABLE t;

The CREATE INDEX statement would be executed roughly as follows:

CREATE TABLE temp(a INT, INDEX(a));
INSERT INTO
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Showing entries 1 to 2

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