- Um Variablen in die vorbereitete Anweisung einzufügen, habe ich die Zeichenfolgenverkettung verwendet. Ihre Abfrage gibt einen Fehler aus, weil
STR_TABLE_NAMEwird als Tabellenname behandelt und findet keinen. - Entfernen Sie den Backtick (`) aus dem Eingabeparameter.
BEGIN
DECLARE STR_TABLE_NAME VARCHAR(100) DEFAULT NULL;
SELECT table_source INTO STR_TABLE_NAME FROM list_repository WHERE id = int_id LIMIT 1;
DROP TABLE IF EXISTS `loyaltytry`;
SET @prep_stmt = CONCAT('CREATE TABLE `loyaltytry` AS (
SELECT
Months AS MONTH,
Number_of_New_Customers AS `new_customers`,
`Number_of_Repeat_Customers` AS `repeat_customers`
FROM (
SELECT
MONTHNAME(Months) AS Months,
MONTH(Months) AS `Month_number`,
SUM(CASE WHEN REP_COUNT = "no" THEN cnts END) AS `Number_of_New_Customers`,
SUM(CASE WHEN REP_COUNT = "yes" THEN cnts END) AS `Number_of_Repeat_Customers`
FROM (
SELECT
months,
REP_COUNT,
COUNT(*) AS cnts
FROM (
SELECT
(date_commande_client) AS Months,
numero,
CASE WHEN cnt > 1 THEN "yes" ELSE "no" END AS REP_COUNT
FROM (
SELECT
COUNT(*) AS cnt,
date_commande_client,
numero
FROM ', STR_TABLE_NAME ,
' WHERE YEAR(date_commande_client) = 2017
AND intitule IN (
SELECT
showroom_name
FROM `showrooms`
WHERE id_region= ', int_id , '
)
GROUP BY date_commande_client, numero
) AS tmp
) AS final
GROUP BY Months, REP_COUNT
) AS tmp1
GROUP BY MONTHNAME(Months), MONTH(Months)
ORDER BY Month_number) AS finalll
)');
PREPARE stmt FROM @prep_stmt;
EXECUTE stmt;
DEALLOCATE PREPARE stmt;
END
