mysql 存儲(chǔ)過(guò)程的問(wèn)題
更新時(shí)間:2009年06月05日 23:57:46 作者:
最近我接觸了一本php 與 mysql,老外寫的一本書,書中有個(gè)tshirtshop網(wǎng)店代碼,其中操作數(shù)據(jù)庫(kù)的大多用的是mysql存儲(chǔ)過(guò)程
一開(kāi)始用phpMyAdmin來(lái)執(zhí)行,后來(lái)出現(xiàn)一堆錯(cuò)誤,后來(lái)去掉了begin,end之后可以正常執(zhí)行,但要執(zhí)行存儲(chǔ)過(guò)程,在phpMyAdmn中不行,而在mysql命令行文本框中就可以。
接下來(lái)又遇到更難的問(wèn)題,在存儲(chǔ)過(guò)程中加入預(yù)處理語(yǔ)句,更不行了,在mysql命令行文本框下執(zhí)行同樣,下面的運(yùn)行記錄,給大家參考,能否有高手來(lái)幫助。
mysql> CREATE PROCEDURE catalog_get_products_in_category(
-> IN inCategoryId INT, IN inShortProductDescriptionLength INT,
-> IN inProductsPerPage INT, IN inStartItem INT)
-> begin
-> SELECT p.product_id, p.name,IF(LENGTH(p.description) <= inShortProductD
escriptionLength, p.description,
-> CONCAT(LEFT(p.description, inShortProductDescriptionLength),'...')) AS
description, p.price, p.discounted_price, p.thumbnail
-> FROM product p INNER JOIN product_category pc ON p.product_id = pc.pro
duct_id
-> WHERE pc.category_id = inCategoryId
-> ORDER BY p.display DESC
-> LIMIT inStartItem;inProductsPerPage;
-> end$$
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that
corresponds to your MySQL server version for the right syntax to use near 'inSta
rtItem;inProductsPerPage;
end' at line 10
//原本的存儲(chǔ)過(guò)程語(yǔ)句
EATE PROCEDURE catalog_get_products_in_category(
IN inCategoryId INT, IN inShortProductDescriptionLength INT,
IN inProductsPerPage INT, IN inStartItem INT)
BEGIN
PREPARE statement FROM
"SELECT p.product_id, p.name,IF(LENGTH(p.description) <= ?, p.description,
CONCAT(LEFT(p.description, ?),'...')) AS description, p.price, p.discounted_price, p.thumbnail
FROM product p INNER JOIN product_category pc ON p.product_id = pc.product_id
WHERE pc.category_id = ?
ORDER BY p.display DESC
LIMIT ?, ?";
SET @p1 = inShortProductDescriptionLength;
SET @p2 = inShortProductDescriptionLength;
SET @p3 = inCategoryId;
SET @p4 = inStartItem;
SET @p5 = inProductsPerPage;
EXECUTE statement USING @p1, @p2, @p3, @p4, @p5;
END$$
mysql> delimiter $$
mysql> CREATE PROCEDURE catalog_get_products_in_category(
-> IN inCategoryId INT, IN inShortProductDescriptionLength INT,
-> IN inProductsPerPage INT, IN inStartItem INT)
-> BEGIN
-> PREPARE statement FROM
-> "SELECT p.product_id, p.name,IF(LENGTH(p.description) <= ?, p.descript
ion,
"> CONCAT(LEFT(p.description, ?),'...')) AS description, p.price, p.disco
unted_price, p.thumbnail
"> FROM product p INNER JOIN product_category pc ON p.product_id = pc.pro
duct_id
"> WHERE pc.category_id = ?
"> ORDER BY p.display DESC
"> LIMIT ?, ?";
-> SET @p1 = inShortProductDescriptionLength;
-> SET @p2 = inShortProductDescriptionLength;
-> SET @p3 = inCategoryId;
-> SET @p4 = inStartItem;
-> SET @p5 = inProductsPerPage;
-> EXECUTE statement USING @p1, @p2, @p3, @p4, @p5;
-> END$$
ERROR 1314 (0A000): PREPARE is not allowed in stored procedures
上面有兩個(gè)存儲(chǔ)過(guò)程,一個(gè)不用預(yù)處理語(yǔ)句,一個(gè)用了預(yù)處理語(yǔ)句,
之后,向作者發(fā)過(guò)郵件,沒(méi)有答復(fù),又給mysql官方發(fā)過(guò)郵件,同樣沒(méi)答復(fù)?,F(xiàn)今只能求助諸位高人。
接下來(lái)又遇到更難的問(wèn)題,在存儲(chǔ)過(guò)程中加入預(yù)處理語(yǔ)句,更不行了,在mysql命令行文本框下執(zhí)行同樣,下面的運(yùn)行記錄,給大家參考,能否有高手來(lái)幫助。
復(fù)制代碼 代碼如下:
mysql> CREATE PROCEDURE catalog_get_products_in_category(
-> IN inCategoryId INT, IN inShortProductDescriptionLength INT,
-> IN inProductsPerPage INT, IN inStartItem INT)
-> begin
-> SELECT p.product_id, p.name,IF(LENGTH(p.description) <= inShortProductD
escriptionLength, p.description,
-> CONCAT(LEFT(p.description, inShortProductDescriptionLength),'...')) AS
description, p.price, p.discounted_price, p.thumbnail
-> FROM product p INNER JOIN product_category pc ON p.product_id = pc.pro
duct_id
-> WHERE pc.category_id = inCategoryId
-> ORDER BY p.display DESC
-> LIMIT inStartItem;inProductsPerPage;
-> end$$
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that
corresponds to your MySQL server version for the right syntax to use near 'inSta
rtItem;inProductsPerPage;
end' at line 10
//原本的存儲(chǔ)過(guò)程語(yǔ)句
EATE PROCEDURE catalog_get_products_in_category(
IN inCategoryId INT, IN inShortProductDescriptionLength INT,
IN inProductsPerPage INT, IN inStartItem INT)
BEGIN
PREPARE statement FROM
"SELECT p.product_id, p.name,IF(LENGTH(p.description) <= ?, p.description,
CONCAT(LEFT(p.description, ?),'...')) AS description, p.price, p.discounted_price, p.thumbnail
FROM product p INNER JOIN product_category pc ON p.product_id = pc.product_id
WHERE pc.category_id = ?
ORDER BY p.display DESC
LIMIT ?, ?";
SET @p1 = inShortProductDescriptionLength;
SET @p2 = inShortProductDescriptionLength;
SET @p3 = inCategoryId;
SET @p4 = inStartItem;
SET @p5 = inProductsPerPage;
EXECUTE statement USING @p1, @p2, @p3, @p4, @p5;
END$$
mysql> delimiter $$
mysql> CREATE PROCEDURE catalog_get_products_in_category(
-> IN inCategoryId INT, IN inShortProductDescriptionLength INT,
-> IN inProductsPerPage INT, IN inStartItem INT)
-> BEGIN
-> PREPARE statement FROM
-> "SELECT p.product_id, p.name,IF(LENGTH(p.description) <= ?, p.descript
ion,
"> CONCAT(LEFT(p.description, ?),'...')) AS description, p.price, p.disco
unted_price, p.thumbnail
"> FROM product p INNER JOIN product_category pc ON p.product_id = pc.pro
duct_id
"> WHERE pc.category_id = ?
"> ORDER BY p.display DESC
"> LIMIT ?, ?";
-> SET @p1 = inShortProductDescriptionLength;
-> SET @p2 = inShortProductDescriptionLength;
-> SET @p3 = inCategoryId;
-> SET @p4 = inStartItem;
-> SET @p5 = inProductsPerPage;
-> EXECUTE statement USING @p1, @p2, @p3, @p4, @p5;
-> END$$
ERROR 1314 (0A000): PREPARE is not allowed in stored procedures
上面有兩個(gè)存儲(chǔ)過(guò)程,一個(gè)不用預(yù)處理語(yǔ)句,一個(gè)用了預(yù)處理語(yǔ)句,
之后,向作者發(fā)過(guò)郵件,沒(méi)有答復(fù),又給mysql官方發(fā)過(guò)郵件,同樣沒(méi)答復(fù)?,F(xiàn)今只能求助諸位高人。
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