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This query runs, but all it does is copy over data from 'event' to 'event1' where there is data in the event column; all other rows remain 'null', like this:ticket__________________event___________________event104-520________NULL____________________NULL04-520________NULL____________________NULL04-520________BRF1104000130___________BRF110400013004-520________NULL____________________NULL05-527________NULL____________________NULL05-527________BRF8194000668___________BRF819400066805-527________NULL____________________NULLetc... PDF (US Ltr) - 38.2Mb PDF (A4) - 38.2Mb PDF (RPM) - 37.1Mb HTML Download (TGZ) - 10.2Mb HTML Download (Zip) - 10.3Mb HTML Download (RPM) - 9.0Mb Man Pages (TGZ) - 206.2Kb Man Pages (Zip) - 314.7Kb Info (Gzip) - 3.5Mb Info (Zip) - 3.5Mb My SQL Backup and Recovery My SQL Globalization My SQL Information Schema My SQL Installation Guide My SQL and Linux/Unix My SQL and OS X My SQL Partitioning My SQL Performance Schema My SQL Replication Using the My SQL Yum Repository My SQL Restrictions and Limitations Security in My SQL My SQL and Solaris Building My SQL from Source Starting and Stopping My SQL My SQL Tutorial My SQL and Windows My SQL NDB Cluster 7.5 My SQL 5.7 Secure Deployment Guide option as part of a table reference.If you set a column to the value it currently has, My SQL notices this and does not update it.If you update a column that has been declared , an error occurs if strict SQL mode is enabled; otherwise, the column is set to the implicit default value for the column data type and the warning count is incremented. The way i understand it external tables don't have primary keys. What if i need to update a table using data from an external table? This option takes a list of one or more partitions or subpartitions (or both).Only the partitions (or subpartitions) listed are checked for matches, and a row that is not in any of these partitions or subpartitions is not updated, whether it satisfies the clause, are flagged as unsafe for statement-based replication.
(Bug #11758262, Bug #50439) See Section 126.96.36.199, “Determination of Safe and Unsafe Statements in Binary Logging”, for more information.
WORKEXTENSION from TBL_VOTERS old, VOTERSWITHNUMBERS new where old.
00000 - "%s: invalid identifier"update ( select old.
I have to update a transaction table where mapping is existing with old account no and new account number.
etc I have a mapping table where "ALL" old account number and new account numbers are present. First, I had to modify your query because as written it throws a 'ambiguous table name' error.By putting the aliases in front of the column names in the 'set' parameter, I was able to work around it:update tset t.event1 = t.[event]from dbo.mytablename t inner join ( select ticket, [event] = max([event]) from dbo.mytablename where [event] is not null group by ticket ) e on t.ticket = e.ticket I also had to put brackets around the word 'event' as that is a reserved SQL word.If it is not possible can you show me how to write "GOOD" sql ? i.e, one column of a table should get updated from another column of another table.