摘要:
思路:根据字符串拼接 和 字符的先后顺序作为条件 sql: select CONCAT(a.name,b.name) from TT a,TT b where a.name != b.name and ascii(a.name) < ascii(b.name)ORDER BY a.name,b.na 阅读全文
posted @ 2018-01-11 15:22
小UU
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