MySQL的 - 動態SQL不能夠計算錯誤

Question

CREATE DEFINER=`root`@`localhost` PROCEDURE `WhileLoopProc`() 

BEGIN 

DECLARE x INT; 

SET x = 1; 

loop1: WHILE x <= 213 DO 

     SET @s = CONCAT('SELECT Units, NAV FROM jbequity.nav WHERE ClientID =', x ,'ORDER BY Date LIMIT 1'); 

    PREPARE stmt FROM @s; 

    EXECUTE stmt; 

    DEALLOCATE PREPARE stmt; 

SET x = x + 1; 

    END WHILE loop1 ; 

END 

Answer 1

嘗試一次看到那一片片導致錯誤，然後谷歌的一個不工作來學習如何使用它刪除ORDER BY Date而LIMIT 1之一。

編輯

我懷疑的問題是，你缺少在ORDER BY