Speed Issue with MySQL

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Hi friends,

I have a table called grn_items and i am trying to execute simple update query .

update grn_items set uid=1;

It has total 823 rows and i need to update a uid column.

But it is taking lot of time to update(more than 20min).

Can anyone help me out.

Posted 9-Jul-14 0:40am

PRAKASH_N

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George Jonsson 9-Jul-14 6:49am

That can't be all your code.

PRAKASH_N 9-Jul-14 6:51am

Is there any log file issues??

Bernhard Hiller 10-Jul-14 2:46am

Any triggers on grn_items?
How is the "uid" column defined?

PRAKASH_N 10-Jul-14 6:10am

yes... on update trigger

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Bernhard Hiller · Answer 1 · 2014-07-10T03:06:00

Solution 1

"update grn_items set uid=1;"
and
"yes... on update trigger "
=> see it? The problem is caused by your trigger (and maybe further nested therein).

Posted 10-Jul-14 3:06am

Bernhard Hiller

Comments

PRAKASH_N 10-Jul-14 22:33pm

yes... It became nesting the trigger i mean looping same trigger again and again.

Now i solved this issue by writing separate stored procedure with Cursor. It taking only 2.0930 sec to update 800 records..

Thank you Bernhard Hiller