Mysql REGEX 2 个词 -- 与 AND LIKE 相同

Question

我有

SELECT p.*, gc.*, g.*, m.*, b.*
FROM (products AS p)
LEFT JOIN merchants AS m
    ON m.merchantId = p.merchantId
LEFT JOIN brands AS b
    ON b.brand = p.brand
LEFT JOIN groups_content gc
    ON p.brand = gc.brandsSelect
LEFT JOIN groups g
    ON g.group_id = gc.group_id
WHERE `p`.`percentOff` > gc.percent_off
    AND `g`.`group_active` = 1
    AND `p`.`price_sale` BETWEEN gc.price_min
        AND gc.price_max
    AND `gc`.`group_content_id` = '180'
    AND `p`.`keyword` LIKE '%women%' AND `p`.`keyword` LIKE '%jacket%'
    AND `p`.`status` = 1
ORDER BY p.price_sale ASC

这个return我158个结果

我还有

SELECT p.*, gc.*, g.*, m.*, b.*
FROM (products AS p)
LEFT JOIN merchants AS m
    ON m.merchantId = p.merchantId
LEFT JOIN brands AS b
    ON b.brand = p.brand
LEFT JOIN groups_content gc
    ON p.brand = gc.brandsSelect
LEFT JOIN groups g
    ON g.group_id = gc.group_id
WHERE `p`.`percentOff` > gc.percent_off
    AND `g`.`group_active` = 1
    AND `p`.`price_sale` BETWEEN gc.price_min
        AND gc.price_max
    AND `gc`.`group_content_id` = '180'
    AND `p`.`keyword` REGEXP 'women.+jacket'
    AND `p`.`status` = 1
ORDER BY p.price_sale ASC

这应该 return 与之前的结果相同。但是 return 我只有 17 个结果。我做错了什么？

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经过多次搜索，这里是正确的 REGEXP

AND p.`keyword` REGEXP '^(.+jacket.+women.+)|^(.+women.+jacket.+).*$'

Answer 1

您的正则表达式等不是等效语句：

CREATE TABLE tab(keyword VARCHAR(100));

INSERT INTO tab(keyword)
VALUES ('jacket for women');

SELECT *
FROM tab p
WHERE  `p`.`keyword` LIKE '%women%' AND `p`.`keyword` LIKE '%jacket%';
-- jacket for women

SELECT *
FROM tab p
WHERE p.`keyword` REGEXP 'women.+jacket';
-- (empty)

SqlFiddleDemo

"woman" 字符串中的任意位置和 "jacket" 字符串中的任意位置

对比

"woman"开头，然后是"jacket"结尾的任意字符

编辑：

But How do I get -- "woman" anywhere in string and "jacket" anywhere in string --- using regular expression?

一种方法是使用：

SELECT *
FROM tab
WHERE keyword REGEXP '.*women.*'
  AND keyword REGEXP '.*jacket.*';

我确定对于这种情况存在一个正则表达式。

Mysql REGEX 2 个词 -- 与 AND LIKE 相同

Mysql REGEXP 2 words -- Same as AND LIKE

mysql

sql

regular-language

sql-like

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