我有两个表:ads_info和ads.
I have two Tables: ads_info and ads.
我想匹配两个表中的记录.
I want to match records from two tables.
广告的SQL模式:
| id | title | |----|-----------------------| | 1 | This Dog is very nice |ads_info的SQL架构:
SQL Schema for ads_info:
| id | infotext | tag | |----|------------------------------|-----------| | 1 | Dogs can eat a lot of things | dog, pets |我想检查ID为1的广告的标题中ads_info中是否有标签.我已经尝试过了:
I want to check if the title of the Ads with id 1 has tags in ads_info. I have tried this:
SELECT * FROM `ads` where id = '1' UNION SELECT * FROM `ads_info` where tag like '%ads.title%'此处是SQL字段: LINK
推荐答案您可以这样操作:演示我确信有更好的方法,甚至可以更好地执行此示例:)但这可能会有所帮助...
Well you can do it this way : DEMO I am sure there are better ways and even this example can be better executed :) But it will maybe help...
首先您要创建拆分功能和在表中插入这些值的过程(我在这里使用此处的答案 LINK 并更正了一些小错误):
First you create function for split and procedure for inserting those values in table(I have used here a answer from here LINK and corrected some small errors):
功能
CREATE FUNCTION SPLIT_STR( x VARCHAR(255), delim VARCHAR(12), pos INT ) RETURNS VARCHAR(255) RETURN REPLACE(SUBSTRING(SUBSTRING_INDEX(x, delim, pos), LENGTH(SUBSTRING_INDEX(x, delim, pos -1)) + 1), delim, '');过程
CREATE PROCEDURE ABC(in fullstr VARCHAR(255)) BEGIN DECLARE a int default 0; DECLARE str VARCHAR(255); simple_loop: LOOP SET a=a+1; SET str=SPLIT_STR(fullstr,",",a); IF str='' THEN LEAVE simple_loop; END IF; insert into my_temp_table values (str); END LOOP simple_loop; END;我已经为此值创建了一个表:
I have created a table for this values:
create table my_temp_table (temp_columns varchar(100));调用了该过程:
call ABC((select tag from ads_info));然后您可以使用它:
Select * from ads B where exists (select * from my_temp_table where find_in_set(UPPER(trim(temp_columns)), replace(UPPER(B.TITLE), ' ', ',')) > 0 );或者这个:
SELECT * FROM ads, my_temp_table WHERE find_in_set(UPPER(trim(temp_columns)), replace(UPPER(ads.TITLE), ' ', ',')) > 0 ;更多推荐
匹配两个表中的记录
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