sql中字符串截取函数
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SQL中字符串截取函数图文教程
目录前言一、left()函数二、right()函数三、substr()函数1，从指定位置开始截取到字符串结束2，从指定位置截取，并指定截取位数3，从字符串末尾第一位开始截取4，从字符串倒数几位开始截取，指定个数的字符四、subst[详细]
2023-01-14 09:07 分类：数据库 Firing a Drupal Rule (or any PHP logic) based on a threshold
I am creating a Rule in D6 to notify a person when \"approved\" volunteer hours reach a multiple of 8. Hours are logged as a custom content type with a numeric CCK field, and \"approved\" is a Flag. I[详细]
2022-12-22 07:16 分类：问答
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