存儲過程不會創建新表

Question

該過程假定採用現有表（oldtable）並創建新表（new_table_n）。它正在運行，但沒有創建一個新表。任何幫助將不勝感激。

DELIMITER $$ 
    CREATE PROCEDURE P_DYN_TABLE(IN OLDTABLE VARCHAR(30), IN NEW_TABLE_N VARCHAR(30)) 
    LANGUAGE SQL 
    BEGIN 

    DECLARE STATEMENT_1 VARCHAR(1000); 

    DECLARE CONTINUE HANDLER FOR SQLSTATE '42704' 
      SET STATEMENT_1 = ''; 
    DECLARE CONTINUE HANDLER FOR SQLEXCEPTION 

    SET STATEMENT_1 = CONCAT('CREATE TABLE ',NEW_TABLE_N,' AS SELECT * FROM ',OLDTABLE,' WHERE 1=2'); 
    PREPARE S1 FROM @STATEMENT_1; 
    EXECUTE S1; 

    SET STATEMENT_1 = CONCAT('INSERT INTO ',NEW_TABLE_N,' SELECT * FROM ',OLDTABLE); 
    PREPARE S2 FROM @STATEMENT_1; 
    EXECUTE S2; 

    END; $$ 

Answer 1

DELIMITER $$ 
CREATE PROCEDURE P_DYN_TABLE(IN OLDTABLE VARCHAR(30), IN NEW_TABLE_N VARCHAR(30)) 
BEGIN 
DECLARE STATMENT VARCHAR(1000); 
SET @STATMENT=""; 
SET @STATMENT = CONCAT('CREATE TABLE ',NEW_TABLE_N,' AS SELECT * FROM ',OLDTABLE,' WHERE 1=2'); 
PREPARE S1 FROM @STATMENT; 
EXECUTE S1; 
DEALLOCATE PREPARE S1; 
SET @STATMENT = CONCAT('INSERT INTO ',NEW_TABLE_N,' SELECT * FROM ',OLDTABLE); 
PREPARE S1 FROM @STATMENT; 
EXECUTE S1; 
DEALLOCATE PREPARE S1; 
END; $$