instr函数mysql如何写
instr函数mysql如何写
instr函数在mysql中的用法
语法:
INSTR(str,substr)
注:
str:从哪一个字符串中搜索
substr:要搜索的子字符串
sql语句以下:
# 将instr结果作为一列,并按其排序
select id,1 from world_guide where id = 32
union
select * from
(select id, instr('30,35,31,',id+',') as d from
world_blog where id in (30,35,31) order by d) as t;
文章来源:丸子建站
文章标题:instr函数mysql如何写
https://www.wanzijz.com/view/4316.html