[英]MYSQL: Search for User ID in one table to search for data in 2 other tables, then show data from all 3 tables
我有一個包含類似於以下條目的數據庫...
users: +-----+------+----------+---------+-------+ | UID | Name | Addr | City | State | +-----+------+----------+---------+-------+ | 1 | John | 101 Main | Austin | TX | | 2 | John | 101 Main | Houston | TX | | 3 | John | 101 Main | Del Rio | TX | | 4 | John | 101 Main | Houston | TX | +-----+------+----------+---------+-------+ verification: +-----+---------------+--------------+ | UID | LicenseFirst3 | LicenseLast3 | +-----+---------------+--------------+ | 1 | 554 | 122 | | 2 | 556 | 345 | | 3 | 555 | 382 | | 4 | 555 | 108 | +-----+---------------+--------------+ section_user_map: +-----+-----------+---------------------+ | UID | SectionID | CompleteDate | +-----+-----------+---------------------+ | 1 | 65 | 2012-05-12 05:05:15 | | 2 | 72 | 2012-05-06 14:03:15 | | 3 | 65 | 2012-05-09 16:13:15 | | 4 | 72 | 2012-05-06 18:14:15 | +-----+-----------+---------------------+
我需要能夠搜索在第 X 天中午和第 Y 天中午之間完成第 65 部分的學生。我還需要顯示學生的姓名、地址、城市、州和他們的許可證號碼的前三位和后三位。 我相信這將需要一個 left join 和 union 命令,但是制定起來有點太復雜了。
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