mysql> Select Emp_B AS Total
-> From (Select Sum(mines.NoOfWorkers) AS Emp_B from mines);
ERROR 1248 (42000): Every derived table must have its own alias
mysql> Select Emp_B AS Total
-> F
我寫的查詢: SELECT COUNT(*) AS count , var1, var2
FROM table
GROUP BY var1, var2
ORDER BY count DESC
這個查詢的作品,但它抓住了一切。我試圖只在count> x(任意數字)時纔得到結果。 我一直在使用WHERE count > x並得到嘗試: 1054 - 在 'where子句' 如果我使用HAVI