instr函數(shù)mysql怎么寫

九三
149
2021-03-03 18:52:44
欄目: 云計(jì)算

instr函數(shù)mysql怎么寫

instr函數(shù)在mysql中的用法

語法:

INSTR(str,substr)

注:

str:從哪個(gè)字符串中搜索

substr:要搜索的子字符串

sql語句如下:

# 將instr結(jié)果作為一列,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;

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