mysqlperformanceandtips.blogspot.com

Mysql Performance and Tips

Mysql Performance and Tips. Thursday, May 23, 2013. Can't create table (errno: 121). When Mysql can't create the table is usually due to FK. 1- make sure you have exact same date types between PK and FK (if you're using unsigned in PK, FK must be unsigned). 2- Check you're not already using same constraint name in the schema. Use info schema to double check. Select table name, referenced table name, constraint name from information schema.referential constraints where constraint schema='your db'. You nee...

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Mysql Performance and Tips. Thursday, May 23, 2013. Can't create table (errno: 121). When Mysql can't create the table is usually due to FK. 1- make sure you have exact same date types between PK and FK (if you're using unsigned in PK, FK must be unsigned). 2- Check you're not already using same constraint name in the schema. Use info schema to double check. Select table name, referenced table name, constraint name from information schema.referential constraints where constraint schema='your db'. You nee...

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Mysql Performance and Tips | mysqlperformanceandtips.blogspot.com Reviews

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Mysql Performance and Tips. Thursday, May 23, 2013. Can't create table (errno: 121). When Mysql can't create the table is usually due to FK. 1- make sure you have exact same date types between PK and FK (if you're using unsigned in PK, FK must be unsigned). 2- Check you're not already using same constraint name in the schema. Use info schema to double check. Select table name, referenced table name, constraint name from information schema.referential constraints where constraint schema='your db'. You nee...

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Mysql Performance and Tips: March 2009

http://mysqlperformanceandtips.blogspot.com/2009_03_01_archive.html

Mysql Performance and Tips. Friday, March 20, 2009. Mysql error : Can't create table (errno: 121). Mysql Error: can't create table (errno 121). This error occurs when you are trying to create referential integrity between InnoDB engine tables and one of the key (primary key or foreign key) has not "unsigned" defined. Make sure your table create statement includes "unsigned" for each PK and FK you created. Subscribe to: Posts (Atom). Mysql error : Cant create table (errno: 121). View my complete profile.

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Mysql Performance and Tips: Can't create table (errno: 121)

http://mysqlperformanceandtips.blogspot.com/2013/05/cant-create-table-errno-121.html

Mysql Performance and Tips. Thursday, May 23, 2013. Can't create table (errno: 121). When Mysql can't create the table is usually due to FK. 1- make sure you have exact same date types between PK and FK (if you're using unsigned in PK, FK must be unsigned). 2- Check you're not already using same constraint name in the schema. Use info schema to double check. Select table name, referenced table name, constraint name from information schema.referential constraints where constraint schema='your db'.

3

Mysql Performance and Tips: January 2009

http://mysqlperformanceandtips.blogspot.com/2009_01_01_archive.html

Mysql Performance and Tips. Thursday, January 22, 2009. Can't update table 'tbl' in stored function/trigger because it is already used by statement. You'll probably get this error if you try to execute an Insert/Update/Delete statement inside a trigger. . The following will fail! Create trigger DB.Trg Upd Sample. Before update ON SDB.Test . If NEW.rowstatus = 0 Then. Update Test set new.rowstatus =1 where TestId = new.TestId;. You need to use "Set" to update the actual columns. Set New.rowstatus = 2 ;.

4

Mysql Performance and Tips: May 2013

http://mysqlperformanceandtips.blogspot.com/2013_05_01_archive.html

Mysql Performance and Tips. Thursday, May 23, 2013. Can't create table (errno: 121). When Mysql can't create the table is usually due to FK. 1- make sure you have exact same date types between PK and FK (if you're using unsigned in PK, FK must be unsigned). 2- Check you're not already using same constraint name in the schema. Use info schema to double check. Select table name, referenced table name, constraint name from information schema.referential constraints where constraint schema='your db'.

5

Mysql Performance and Tips: Can't update table 'tbl' in stored function/trigger because it is already used by statement

http://mysqlperformanceandtips.blogspot.com/2009/01/cant-update-table-tbl-in-stored.html

Mysql Performance and Tips. Thursday, January 22, 2009. Can't update table 'tbl' in stored function/trigger because it is already used by statement. You'll probably get this error if you try to execute an Insert/Update/Delete statement inside a trigger. . The following will fail! Create trigger DB.Trg Upd Sample. Before update ON SDB.Test . If NEW.rowstatus = 0 Then. Update Test set new.rowstatus =1 where TestId = new.TestId;. You need to use "Set" to update the actual columns. Set New.rowstatus = 2 ;.

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Mysql Performance and Tips. Thursday, May 23, 2013. Can't create table (errno: 121). When Mysql can't create the table is usually due to FK. 1- make sure you have exact same date types between PK and FK (if you're using unsigned in PK, FK must be unsigned). 2- Check you're not already using same constraint name in the schema. Use info schema to double check. Select table name, referenced table name, constraint name from information schema.referential constraints where constraint schema='your db'. You nee...

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