Thank you, Sir. So, there is no way to plan update query? Regards,
Mikhail Berman -----Original Message----- From: Paul DuBois [mailto:[EMAIL PROTECTED] Sent: Wednesday, November 29, 2006 2:37 PM To: Mikhail Berman; mysql@lists.mysql.com Subject: Re: Any explanation for this, please At 14:31 -0500 11/29/06, Mikhail Berman wrote: >Dear List, > >Could I get an explanation why 1 fails, but 2 works. Because EXPLAIN is used only with SELECT statements. Try to use a similar SELECT. > >1. > >Update statement preceded with explain, fails: > >explain update COMPANY_NUMBERS_tmp_Mikhail c join >tmp_HEMSCOTT_MKTVALUES t on c.ticker = t.TickerSymbol and >t.InterimEndingDate = >replace(left(c.date_qtr,7),'-','/') set >c.total_shares_outstanding_market_cap = t.MarketValue; ERROR 1064 >(42000): You have an error in your SQL syntax; check the manual that >corresponds to your MySQL server version for the right syntax to use >near 'update COMPANY_NUMBERS_tmp_Mikhail c join tmp_HEMSCOTT_MKTVALUES >t on c.ticker =' at line 1 > >2. > >Actual execution of the update statement goes through, no problem > >mysql> update COMPANY_NUMBERS_tmp_Mikhail c join tmp_HEMSCOTT_MKTVALUES >t on c.ticker = t.TickerSymbol and t.InterimEndingDate = >replace(left(c.date_qtr,7),'-','/') >set c.total_shares_outstanding_market_cap = t.MarketValue; Query OK, >157551 rows affected (4 min 22.81 sec) Rows matched: 162999 Changed: >157551 Warnings: 0 > >Regards, > >Mikhail Berman > -- Paul DuBois, MySQL Documentation Team Madison, Wisconsin, USA MySQL AB, www.mysql.com -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED] -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED]
