如何在MySQL查询中编写IF ELSE语句
如何在MySQL查询中编写IF ELSE语句?
像这样:
mysql_query("...(irrelevant code).. IF(action==2&&state==0){state=1}");
然后在我的数组中,我应该能够做到这一点:
$row['state'] //this should equal 1, the query should not change anything in the database,
//just the variable for returning the information
回答:
您可能要使用CASE
表达式。
他们看起来像这样:
SELECT col1, col2, (case when (action = 2 and state = 0) THEN
1
ELSE
0
END)
as state from tbl1;
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