mysql 多表關聯查詢 實現 全文匹配的 模糊搜索接口 SQL

SELECT tagDeptUserRel.* 
FROM tag_dept_user_rel tagDeptUserRel
inner join product prod on find_in_set(prod.id, tagDeptUserRel.dept_mapping_product_ids)
inner join employee creatorEmployee on creatorEmployee.work_no = tagDeptUserRel.creator
inner join employee ownerEmployee on ownerEmployee.work_no = tagDeptUserRel.owner
inner join tag_group tagGroup on find_in_set(tagGroup.id, tagDeptUserRel.tag_group_ids)
inner join tag_group_show_user_rel tagGroupShowUserRel on tagGroupShowUserRel.owner = tagDeptUserRel.owner
where 
concat_ws(',',
prod.swork_dept_name,
creatorEmployee.emp_name,
creatorEmployee.nick_name,
ownerEmployee.emp_name,
ownerEmployee.nick_name,
tagGroup.name,
(select tg.name from tag_group tg where tg.id = tagGroupShowUserRel.show_group_id))
like CONCAT('%','之劍','%') ;

SELECT tagDeptUserRel.* ,
concat_ws(',',
prod.swork_dept_name,
creatorEmployee.emp_name,
creatorEmployee.nick_name,
ownerEmployee.emp_name,
ownerEmployee.nick_name,
tagGroup.name,
(select tg.name from tag_group tg where tg.id = tagGroupShowUserRel.show_group_id)) as searchFullText

FROM tag_dept_user_rel tagDeptUserRel
inner join product prod on find_in_set(prod.id, tagDeptUserRel.dept_mapping_product_ids)
inner join employee creatorEmployee on creatorEmployee.work_no = tagDeptUserRel.creator
inner join employee ownerEmployee on ownerEmployee.work_no = tagDeptUserRel.owner
inner join tag_group tagGroup on find_in_set(tagGroup.id, tagDeptUserRel.tag_group_ids)
inner join tag_group_show_user_rel tagGroupShowUserRel on tagGroupShowUserRel.owner = tagDeptUserRel.owner
where 
concat_ws(',',
prod.swork_dept_name,
creatorEmployee.emp_name,
creatorEmployee.nick_name,
ownerEmployee.emp_name,
ownerEmployee.nick_name,
tagGroup.name,
(select tg.name from tag_group tg where tg.id = tagGroupShowUserRel.show_group_id))
like CONCAT('%','之劍','%') ;

mysql中FIND_IN_SET的使用方法

在mysql中，有時我們在做數據庫查詢時，需要得到某字段中包含某個值的記錄，但是它也不是用like能解決的，使用like可能查到我們不想要的記錄，它比like更精準，這時候mysql的FIND_IN_SET函數就派上用場了，下面來具體了解一下。

FIND_IN_SET(str,strlist)函數

str 要查詢的字符串

strlist 字段名 參數以”,”分隔 如 (1,2,6,8)

查詢字段(strlist)中包含(str)的結果，返回結果為null或記錄

下面舉例說明

test表中有如下字段及值

下面我想查詢area中包含”1″這個參數的記錄

SELECT * from test where FIND_IN_SET('1',area)
返回值

下面查詢btype字段中包含”15″這個參數的值

SELECT * from test where FIND_IN_SET('15',btype)
返回值

下面查詢btype字段中包含”5″這個參數的值

SELECT * from test where FIND_IN_SET('5',btype)
返回值為null,因為btype中沒有”5”這個值，它不同于 like 模糊查詢，它是以“,”來分隔值

接下面查詢btype字段中包含”20″這個參數的值

SELECT * from test where FIND_IN_SET('20',btype)
當然它的返回值為null，因為字段中沒有這個值

FIND_IN_SET和like的區別

like是廣泛的模糊匹配，字符串中沒有分隔符，Find_IN_SET 是精確匹配，字段值以英文”,”分隔，Find_IN_SET查詢的結果要小于like查詢的結果。

select 嵌套使用

SELECT tagDeptUserRel.* ,
concat_ws(',',
prod.swork_dept_name,
creatorEmployee.emp_name,
creatorEmployee.nick_name,
ownerEmployee.emp_name,
ownerEmployee.nick_name,
tagGroup.name,
(select tg.name from tag_group tg where tg.id = tagGroupShowUserRel.show_group_id)) as searchFullText

FROM tag_dept_user_rel tagDeptUserRel
...
where 
concat_ws(',',
prod.swork_dept_name,
creatorEmployee.emp_name,
creatorEmployee.nick_name,
ownerEmployee.emp_name,
ownerEmployee.nick_name,
tagGroup.name,
(select tg.name from tag_group tg where tg.id = tagGroupShowUserRel.show_group_id))
like CONCAT('%','之劍','%')