MySQL连接两个表,其中PHP变量的WHERE语句已经存在

我通常会像这样加入：

$query = "SELECT table1.ColA, table2.ColC ".
     "FROM table1, table2".
        "WHERE table1.uid = table2.uid";

但在这种情况下,WHERE部分已经用于使用PHP变量指定记录.在这种情况下如何加入表2？

SELECT sql_CALC_FOUND_ROWS ColA, ColB FROM Table1 WHERE value = $value

解决方法:

请试试这个

$query = "SELECT table1.ColA, table2.ColC FROM table1, 
            table2 WHERE table1.uid = table2.uid and table1.value=$value";

要么

$query = "SELECT table1.ColA, table2.ColC FROM table1 INNER JOIN table2 
               ON (table1.uid = table2.uid) WHERE table1.value=$value";