select count(*) from table1 select count(*) from table2 select count(*) from table3我从table1 table2 table3 中 找数据的条数怎样一下子用一条sql语句 算出TABLE1 TABLE2 TABLE3 记录的总和?
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![select count(*) from table1 select count(*) from table2 select count(*) from table3我从table1 table2 table3 中 找数据的条数怎样一下子用一条sql语句 算出TABLE1 TABLE2 TABLE3 记录的总和?](/uploads/image/z/7976759-23-9.jpg?t=select+count%28%2A%29+from+table1+select+count%28%2A%29+from+table2+select+count%28%2A%29+from+table3%E6%88%91%E4%BB%8Etable1+table2+table3+%E4%B8%AD+%E6%89%BE%E6%95%B0%E6%8D%AE%E7%9A%84%E6%9D%A1%E6%95%B0%E6%80%8E%E6%A0%B7%E4%B8%80%E4%B8%8B%E5%AD%90%E7%94%A8%E4%B8%80%E6%9D%A1sql%E8%AF%AD%E5%8F%A5+%E7%AE%97%E5%87%BATABLE1+TABLE2+TABLE3+%E8%AE%B0%E5%BD%95%E7%9A%84%E6%80%BB%E5%92%8C%3F)
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