我试图创建一个存储过程，传递一个 TVP，然后将 TVP 中的一些数据插入到两个表中。
我已经实现了存储过程,但是只有第二个插入 (唯一一个不从 TVP 读取的) 正在工作,另外两个不工作 (不插入任何东西),我似乎无法弄清楚为什么。
我试图在 SQL Server 中创建一个虚拟的 TVP 并在那里运行该过程,但这也不起作用。这是由 TVP 是只读的事实引起的吗?我会假设不是,因为我实际上并没有在 TVP 中插入或更新数据。
有没有办法使这项工作？
谢谢你的帮助！
表值参数定义:
CREATE TYPE dbo.Ingredients
AS TABLE
(
Quantity int,
Measure nvarchar(50),
Ingredient nvarchar(50),
)
GO
存储过程：
ALTER PROCEDURE uspCreateRecipe
(@IDUser int,
@RecipeName nvarchar(50),
@Category nvarchar(50),
@Difficulty nvarchar(50),
@Duration nvarchar(50),
@ING dbo.Ingredients READONLY,
@Execution text)
AS
BEGIN
INSERT INTO dbo.Ingredients
VALUES ((SELECT Ingredient FROM @ING WHERE NOT EXISTS (SELECT Ingredient FROM @ING WHERE Ingredient IN (SELECT IngredientName FROM dbo.Ingredients))), 2)
INSERT INTO dbo.Recipes
VALUES (@IDUser, @RecipeName, NULL,
(SELECT IDDifficulty FROM dbo.Difficulty WHERE Difficulty = @Difficulty),
(SELECT IDDuration FROM dbo.Duration WHERE Duration = @Duration ),
NULL,
(SELECT IDCategory FROM dbo.Category WHERE CategoryName = @Category ),
@Execution , NULL, 2, GETDATE())
INSERT INTO dbo.Recipes_Ingredients
VALUES (SCOPE_IDENTITY(),
(SELECT Quantity FROM @ING),
(SELECT IDMeasure FROM dbo.Measure WHERE Measure IN (SELECT Measure FROM @ING)),
(SELECT IDIngredient FROM dbo.Ingredients WHERE IngredientName IN (SELECT Ingredient FROM @ING)))
END
5
而不是使用VALUES与子查询，只使用SELECT。
始终列出您要插入的列。它更清晰，将减少错误，特别是如果您将来修改表结构，
您的第一个查询似乎过于复杂-如果确实有效的话。
您的第三个查询应该抛出一个错误，因为您有多个IN子查询，应该导致“子查询返回多个结果”错误。
text数据类型使用varchar(max)折旧。
通常你想SET NOCOUNT, XACT_ABORT ON。
总是RETURN一个状态，所以你的调用应用程序知道它是否成功。
分号终止所有语句。
ALTER PROCEDURE uspCreateRecipe
(
@IDUser int
, @RecipeName nvarchar(50)
, @Category nvarchar(50)
, @Difficulty nvarchar(50)
, @Duration nvarchar(50)
, @ING dbo.Ingredients READONLY
, @Execution nvarchar(max) -- text is depreciated
)
AS
BEGIN
SET NOCOUNT, XACT_ABORT ON;
INSERT INTO dbo.Ingredients ([Name], Col2)
SELECT Ingredient, 2
FROM @ING
WHERE Ingredient NOT IN (SELECT IngredientName FROM dbo.Ingredients);
INSERT INTO dbo.Recipes (IDUser, RecipeName, Col3, IDDifficulty, IDDuration, Col6, IDCategory, Col8, Col9, Col10, Co11)
SELECT @IDUser, @RecipeName, NULL, IDDifficulty
, (SELECT IDDuration FROM dbo.Duration WHERE Duration = @Duration)
, NULL
, (SELECT IDCategory FROM dbo.Category WHERE CategoryName = @Category)
, @Execution, NULL, 2, GETDATE()
FROM dbo.Difficulty
WHERE Difficulty = @Difficulty;
INSERT INTO dbo.Recipes_Ingredients (IDRecipe, Quantity, IDMeasureid, IDIngredient)
SELECT SCOPE_IDENTITY(), Quantity
, (SELECT IDMeasure FROM dbo.Measure WHERE Measure = I.Measure)
, (SELECT IDIngredient FROM dbo.Ingredients WHERE IngredientName = I.Ingredient)
FROM @ING I;
RETURN 0;
END;
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