错误2014：SQL脚本中的命令不同步

Question

我正在尝试通过将时间打印到CSV文件来创建数据库在各种任务上花费的时间的图形。

它应该测试以下内容：分别插入10、50、100、500、1000、5000、10.000、50.000、100.000、500.000和1.000.000并将其写入文件。

它总是给我错误2014：命令不同步。有办法解决吗？

DELIMITER $$
USE mydb;
CREATE DEFINER = 'root'@'localhost'culturacultura PROCEDURE script(IN i INT)
BEGIN
    DECLARE counter INT;
    DECLARE size INT;
    DECLARE line INT;
    DECLARE startTime TIMESTAMP;
    DECLARE endTime TIMESTAMP;

    SET counter = 1;
    SET size = 10;
    SET line = 1;

    WHILE (line <= 10) DO
        SET startTime = NOW();
        WHILE (counter <= size) DO

            CASE i
            WHEN 1 THEN SET @query1 = CONCAT('INSERT INTO Log(idOperação, Data, Utilizador, Operação, Tabela, idObjecto, Coluna, Valor) VALUES()');
            WHEN 2 THEN SET @query1 = CONCAT('INSERT INTO Investigador(Email, Nome, CategoriaProfissional, Passe) VALUES("userEmail', @counter, '@gmail.com", JoãoUser', @counter,', "PHD", "password', @counter, '");');
            WHEN 3 THEN SET @query1 = CONCAT('INSERT INTO Cultura(Email, Nome, Descrição) VALUES("userEmail', @counter, '@gmail.com", "Cultura', @counter, '", "Uma descrição qualquer.");');
            WHEN 4 THEN SET @query1 = CONCAT('INSERT INTO Variável(Nome) VALUES("Variável', @counter, '");');
            WHEN 5 THEN SET @query1 = CONCAT('INSERT INTO VariáveisCultura(idCultura, idVariável, LimiteInferior, LimiteSuperior) VALUES(', @counter, ', ', @counter, ', ', @counter + 1, ', ', @counter + 5, ');');
            WHEN 6 THEN SET @query1 = CONCAT('INSERT INTO Medição "user',@counter,'@email.com"@"localhost" IDENTIFIED BY "password',@counter,'" ');
            END CASE;

            PREPARE stmt FROM @query1;
            EXECUTE stmt;
            DEALLOCATE PREPARE stmt;

            SET @first = @first +  1;

        END WHILE;

        SET endTime = NOW();

        CASE i
        WHEN 1 THEN SET @query1 = CONCAT("SELECT TIMESTAMPDIFF(SECOND, @startTime, @endTime) AS Time INTO OUTFILE 'time_log_creation_'",@size,".csv' FIELDS ENCLOSED BY '\"' TERMINATED BY ';' ESCAPED BY '\"'","  LINES TERMINATED BY '\r\n';");
        WHEN 2 THEN SET @query1 = CONCAT("SELECT TIMESTAMPDIFF(SECOND, @startTime, @endTime) AS Time INTO OUTFILE 'time_investigador_creation_'",@size,".csv' FIELDS ENCLOSED BY '\"' TERMINATED BY ';' ESCAPED BY '\"'","  LINES TERMINATED BY '\r\n';");
        WHEN 3 THEN SET @query1 = CONCAT("SELECT TIMESTAMPDIFF(SECOND, @startTime, @endTime) AS Time INTO OUTFILE 'time_cultura_creation_'",@size,".csv' FIELDS ENCLOSED BY '\"' TERMINATED BY ';' ESCAPED BY '\"'","  LINES TERMINATED BY '\r\n';");
        WHEN 4 THEN SET @query1 = CONCAT("SELECT TIMESTAMPDIFF(SECOND, @startTime, @endTime) AS Time INTO OUTFILE 'time_variável_creation_'",@size,".csv' FIELDS ENCLOSED BY '\"' TERMINATED BY ';' ESCAPED BY '\"'","  LINES TERMINATED BY '\r\n';");
        WHEN 5 THEN SET @query1 = CONCAT("SELECT TIMESTAMPDIFF(SECOND, @startTime, @endTime) AS Time INTO OUTFILE 'time_associação_creation_'",@size,".csv' FIELDS ENCLOSED BY '\"' TERMINATED BY ';' ESCAPED BY '\"'","  LINES TERMINATED BY '\r\n';");
        WHEN 6 THEN SET @query1 = CONCAT("SELECT TIMESTAMPDIFF(SECOND, @startTime, @endTime) AS Time INTO OUTFILE 'time_madição_creation_'",@size,".csv' FIELDS ENCLOSED BY '\"' TERMINATED BY ';' ESCAPED BY '\"'","  LINES TERMINATED BY '\r\n';");
        END CASE;

        PREPARE stmt FROM @query1;
        EXECUTE stmt;
        DEALLOCATE PREPARE stmt;

        TRUNCATE TABLE tablename;
        IF(line % 2 = 1) THEN
            SET size = size * 5;
        ELSE
            SET size = size * 2;
        END IF;
    END WHILE;
END$$
DELIMITER ;
/*CALL script(1);*/
CALL script(2);
CALL script(3);
CALL script(4);
CALL script(5);
/*CALL script(6);*/
DROP PROCEDURE script;