Php 在多个表中搜索关键字
我有以下表格Php 在多个表中搜索关键字,php,mysql,Php,Mysql,我有以下表格 state : state_id, state_name city : city_id, city_name, state_id category : category_id, category_name products : product_id, product_name, cateogory_id, product_description, city_id 我想在所有表中搜索给定的关键字 我尝试使用LIKE,它返回许多行 我试过的代码 keyword = 'apple';
state : state_id, state_name
city : city_id, city_name, state_id
category : category_id, category_name
products : product_id, product_name, cateogory_id, product_description, city_id
我想在所有表中搜索给定的关键字
我尝试使用LIKE,它返回许多行
我试过的代码
keyword = 'apple';
SELECT
*
FROM
products AS p,
categories AS cat,
city AS c,
state as s
WHERE
p.category_id=cat.category_id
AND p.city_id=c.city_id
AND c.state_id=s.state_id
AND p.product_name LIKE '%apple%'
OR p.product_description LIKE '%apple%'
OR cat.category_name LIKE '%apple%'
OR c.city_name LIKE '%apple%'
OR s.state_name LIKE '%apple%'
有什么帮助吗 如果要查询精确匹配,请使用
=
:
SELECT
*
FROM
products AS p,
categories AS cat,
city AS c,
state as s
WHERE
p.category_id=cat.category_id
AND p.city_id=c.city_id
AND c.state_id=s.state_id
AND p.product_name = 'apple'
OR p.product_description = 'apple'
OR cat.category_name LIKE = 'apple'
OR c.city_name LIKE = 'apple'
OR s.state_name LIKE = 'apple'
如果要返回包含“apple”单词的所有行,请尝试在其周围添加空格,如下所示:
SELECT
*
FROM
products AS p,
categories AS cat,
city AS c,
state as s
WHERE
p.category_id=cat.category_id
AND p.city_id=c.city_id
AND c.state_id=s.state_id
AND p.product_name LIKE '% apple%'
OR p.product_name LIKE '%apple %'
OR p.product_description LIKE '% apple%'
OR p.product_description LIKE '%apple %'
OR cat.category_name LIKE '% apple%'
OR cat.category_name LIKE '%apple %'
OR c.city_name LIKE '% apple%'
OR c.city_name LIKE '%apple %'
OR s.state_name LIKE '% apple%'
OR s.state_name LIKE '%apple %'