MySQL中多表不关联查询
MySQL中多表不关联查询
多表不关联查询中，需要在结果数组中区分开每张表所查询出来的数据，在每个⼦SELET语句中加⼊固定值再加以判断。
问题解决...
语句：
(SELECT field1 AS a,field11 AS b, '常量1' AS c FROM table1) UNION ALL (SELECT field2 AS a,field22 AS b, '常量2' AS c FROM table2)  UNION ALL ... ORDER BY a DESC 结果：
Array
(
[0] => Array
(
[a] => ...
[b] => ...
[c] => '常量1'
)
[1] => Array
(c语言中memset
[a] => ...
[b] => ...
html文档是超文本文档吗[c] => '常量1'
)
[2] => Array
(
mysql语句多表查询[a] => ...
[b] => ...
[c] => '常量2'
)
[3] => Array
(
反函数关于什么对称>区块链交易所源码
n0 stacking[a] => ...
[b] => ...
[c] => '常量1'
)
)

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