Sekhar,

----- Original Message -----
From: ""Sekhar.Thota"" <[EMAIL PROTECTED]>
Newsgroups: mailing.database.mysql
Sent: Tuesday, December 03, 2002 3:14 PM
Subject: truncate table ...


> Dear All,
>
>   I am getting a severe problem with truncate comand( InnoDB Tables
> -
>  Mysql 3.23.52-MAX on Linux 7.3) .
>
>   The scenario is:
>
>   I have a table with more than 100 Million records. I gave a
>   truncate table command to delete all the data from this table. Once
> I gave this
>  comand it is truncating all the records. The count is showing that it
>  have 0 rows but still the show table status is showing that  it is
>  having all the 100 Million records in that table and the problem is
>  after some time it is not allowing any sessions to open and all the
>  existing session are hanging up.
>
>  Please help me by telling what I have to do in this scenario. I
>  restarted the server it self but still no session can able to open.

TRUNCATE TABLE tablename;

currently runs internally as

DELETE FROM tablename;

That takes time. Workaround: use DROP TABLE + CREATE TABLE.

I hope in MySQL-4.0.7 TRUNCATE TABLE will be fast for InnoDB, i.e., it will
be internally mapped as DROP + CREATE.

>  Regards,
>  Sekhar

Best regards,

Heikki Tuuri
Innobase Oy
---
InnoDB - transactions, hot backup, and foreign key support for MySQL
See http://www.innodb.com, download MySQL-Max from http://www.mysql.com

sql query




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