mysql update if

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mysql update if

MySQL supports IF statement. UPDATE abbonamento SET punti = IF(tipo = 'punti', punti - 1, punti), bonus = IF(tipo <> 'punti', bonus - 1, bonus) ..., UPDATE table SET A = IF(A > 0 AND A < 1, 1, IF(A > 1 AND A < 2, 2, A)) ... Whilst you certainly can use MySQL's IF() control flow function as ...,No ...brain damage... necessary. You can do it with a query. UPDATE user_properties SET fstatus = IF(followup_offer IS NULL, fstatus, ?), istatus ... ,Try this query. UPDATE tablename SET col1=(CASE WHEN col1 LIKE 'A' THEN col1='IA' ELSE col1 END), col2=(CASE WHEN col1 LIKE 'A' THEN col2='XXX' ... , This works because MySQL doesn't update the row, if there is no ... If you set a column to the value it currently has, MySQL notices this and ..., I think you were 99% there: UPDATE table SET A = IF(A > 20, 20, IF(A < 20 && A > 1, A, 0)) WHERE A IS NOT NULL;. Add the && A > 1 to the ..., mysql - Insert Where Not Exists-Without Primary Key - Stack Overflow ... MySQL–Update and Insert if not exists | Chief of the System Blog, The syntax is as follows to perform UPDATE using IF condition in MySQL − update yourTableName set yourColumnName ..., MYSQL - How to use UPDATE with IF-ELSE condition. MySQL Database Forums on Bytes., update driver_online set vRemainCapacity= case when (vRemainCapacity>0) and ((vRemainCapacity-0.5) >0) then vRemainCapacity-0.5 else ...

相關軟體 MySQL 資訊

MySQL
MySQL 是一個開源的 RDBMS(關係數據庫管理系統),它支持用 C,C ++,Java,Perl 和 PHP 等各種編程語言編寫的請求。由於其高速度和靈活性,MySQL 已成為主要用於開發各種形狀和大小的 Web 應用程序的最流行的數據庫系統之一。自 1995 年上市以來,這種非常受歡迎的開源數據庫管理系統已經應用於當今幾乎所有互聯網用戶的無數項目中。今天一些最受歡迎的 MySQL 用戶是 ... MySQL 軟體介紹

mysql update if 相關參考資料
update mysql with if condition - Stack Overflow

MySQL supports IF statement. UPDATE abbonamento SET punti = IF(tipo = &#39;punti&#39;, punti - 1, punti), bonus = IF(tipo &lt;&gt; &#39;punti&#39;, bonus - 1, bonus)&nbsp;...

https://stackoverflow.com

MySQL - Using If Then Else in MySQL UPDATE or SELECT Queries ...

UPDATE table SET A = IF(A &gt; 0 AND A &lt; 1, 1, IF(A &gt; 1 AND A &lt; 2, 2, A)) ... Whilst you certainly can use MySQL&#39;s IF() control flow function as&nbsp;...

https://stackoverflow.com

using IF statement in mysql update query - Stack Overflow

No ...brain damage... necessary. You can do it with a query. UPDATE user_properties SET fstatus = IF(followup_offer IS NULL, fstatus, ?), istatus&nbsp;...

https://stackoverflow.com

MySQL: Update Query using If else - Stack Overflow

Try this query. UPDATE tablename SET col1=(CASE WHEN col1 LIKE &#39;A&#39; THEN col1=&#39;IA&#39; ELSE col1 END), col2=(CASE WHEN col1 LIKE &#39;A&#39; THEN col2=&#39;XXX&#39;&nbsp;...

https://stackoverflow.com

MySQL: update a field only if condition is met - Stack Overflow

This works because MySQL doesn&#39;t update the row, if there is no ... If you set a column to the value it currently has, MySQL notices this and&nbsp;...

https://stackoverflow.com

How to use If Then Else in a MySQL update query? - Stack Overflow

I think you were 99% there: UPDATE table SET A = IF(A &gt; 20, 20, IF(A &lt; 20 &amp;&amp; A &gt; 1, A, 0)) WHERE A IS NOT NULL;. Add the &amp;&amp; A &gt; 1 to the&nbsp;...

https://stackoverflow.com

MySQL INSERT 與UPDATE 的一些特殊情況用法 - 思考要在空白頁

mysql - Insert Where Not Exists-Without Primary Key - Stack Overflow ... MySQL–Update and Insert if not exists | Chief of the System Blog

http://blog.yslin.tw

MySQL UPDATE using IF condition - Tutorialspoint

The syntax is as follows to perform UPDATE using IF condition in MySQL − update yourTableName set yourColumnName&nbsp;...

https://www.tutorialspoint.com

MYSQL - How to use UPDATE with IF-ELSE condition - MySQL Database ...

MYSQL - How to use UPDATE with IF-ELSE condition. MySQL Database Forums on Bytes.

https://bytes.com

一条mysql update if then 语句- u014263216的博客- CSDN博客

update driver_online set vRemainCapacity= case when (vRemainCapacity&gt;0) and ((vRemainCapacity-0.5) &gt;0) then vRemainCapacity-0.5 else&nbsp;...

https://blog.csdn.net