on duplicate key update if
Conditional ON DUPLICATE KEY UPDATE (Update only if certain condition is true) ... IF lastupdate was less than 20 minutes ago ( lastupdate > NOW() - INTERVAL 20 MINUTE ). True: Update lastupdate = NOW() , add one to programruncount and then update ip ,You can use if() and case in the logic for on duplicate key update . I may not understand the purpose for doing this, but I think the following implements it: , So, it's better to use the IF() or a CASE clause. Unless you prefer the (there goes the elegance ...): ON DUPLICATE KEY UPDATE count ..., The syntax IS NOT NULL column is wrong. Correct: column IS NOT NULL . I'm not sure what this 'test' is about. You say that you want to either ...,You can use normal sql constructs in the ON DUPLICATE KEY syntax. ... on the behavior of MySQL where it doesn't update a row if you set a value to itself you ... , I think you should try this change: INSERT INTO sbm_sys.sy_version (mod_id, sub_mod, version, remark, update_date, `file`) VALUES ('CS', ..., Insert...on duplicate key相信大家都知道了，是一个非常好用的功能，可以在批量导入数据的时候插入并且保证在key冲突的时候执行更新操作而不是 ...,IF(SELECT * FROM login_times WHERE user_id = 'abc') UPDATE login_times SET count = count + 1 ... ON DUPLICATE KEY UPDATE 的話就可以縮減成一行︰ ,ON DUPLICATE KEY UPDATE statement. In other words, VALUES( col_name ) in the ON DUPLICATE KEY UPDATE clause refers to the value of col_name that would be inserted, had no duplicate-key conflict occurred. , Conditional duplicate key updates with MySQL. In one of ... In a simple case like this the easiest workaround is to use the IF function: INSERT ...
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 on duplicate key update if 相關參考資料
Conditional ON DUPLICATE KEY UPDATE (Update only if certain ...
Conditional ON DUPLICATE KEY UPDATE (Update only if certain condition is true) ... IF lastupdate was less than 20 minutes ago ( lastupdate > NOW() - INTERVAL 20 MINUTE ). True: Update lastupdate =... https://stackoverflow.com INSERT ... ON DUPLICATE KEY UPDATE [IF] - Stack Overflow
You can use if() and case in the logic for on duplicate key update . I may not understand the purpose for doing this, but I think the following implements it: https://stackoverflow.com on duplicate key update with a condition? - Stack Overflow
So, it's better to use the IF() or a CASE clause. Unless you prefer the (there goes the elegance ...): ON DUPLICATE KEY UPDATE count ... https://stackoverflow.com Using IF() With ON DUPLICATE KEY UPDATE in MySQL - Stack Overflow
The syntax IS NOT NULL column is wrong. Correct: column IS NOT NULL . I'm not sure what this 'test' is about. You say that you want to either ... https://stackoverflow.com conditional on duplicate key update - Stack Overflow
You can use normal sql constructs in the ON DUPLICATE KEY syntax. ... on the behavior of MySQL where it doesn't update a row if you set a value to itself you ... https://stackoverflow.com mysql - INSERT ON DUPLICATE KEY UPDATE with IF - Database ...
I think you should try this change: INSERT INTO sbm_sys.sy_version (mod_id, sub_mod, version, remark, update_date, `file`) VALUES ('CS', ... https://dba.stackexchange.com 【mysql】insert ... on duplicate key update column=IF(条件,值1,值2 ...
Insert...on duplicate key相信大家都知道了，是一个非常好用的功能，可以在批量导入数据的时候插入并且保证在key冲突的时候执行更新操作而不是 ... https://blog.csdn.net MySQL 語法- INSERT ... ON DUPLICATE KEY UPDATE @ Vexed's ...
IF(SELECT * FROM login_times WHERE user_id = 'abc') UPDATE login_times SET count = count + 1 ... ON DUPLICATE KEY UPDATE 的話就可以縮減成一行︰ https://blog.xuite.net Insert… on Duplicate Key UPDATE… - MySQL :: Developer Zone
ON DUPLICATE KEY UPDATE statement. In other words, VALUES( col_name ) in the ON DUPLICATE KEY UPDATE clause refers to the value of col_name that would be inserted, had no duplicate-key conflict occurr... https://dev.mysql.com Conditional duplicate key updates with MySQL - TheWebFellas
Conditional duplicate key updates with MySQL. In one of ... In a simple case like this the easiest workaround is to use the IF function: INSERT ... https://thewebfellas.com |