如何使用 sp_execute 传递 table 参数

Question

我需要将 table var 传递给 sp_executesql 语句。你知道如何将 table 变量传递给 sp_executesql 吗？

下面是我如何将常规变量（不是 table 变量）传递给 sp_executesql

EXEC sp_executesql @statement, N'@Status INT',@Status

Answer 1

通常您不会传递 table 变量来执行 SQL 和 sp_executesql。你用文本做一个声明并执行它。像这样：

IF OBJECT_ID('tempdb..#People') IS NOT NULL 
    DROP TABLE tempdb..#People

CREATE TABLE #People (PersonId INT IDENTITY, PersonName VARCHAR(128));

INSERT INTO #People (PersonName) VALUES ('Brett'), ('John'), ('Mark'), ('Shawn'), ('Ryan'), ('Kevin');

DECLARE @SQL NVARCHAR(Max) = 'Select * from #People'

EXEC sp_executesql @Sql

更新 1-27-17

IF OBJECT_ID('tempdb..#People') IS NOT NULL DROP TABLE tempdb..#People
IF OBJECT_ID('tempdb..#People2') IS NOT NULL DROP TABLE tempdb..#People2

CREATE TABLE #People (PersonId INT IDENTITY, PersonName VARCHAR(128));
CREATE TABLE #People2 (PersonId INT IDENTITY(7,1), PersonName VARCHAR(128));

SET NOCOUNT ON;

INSERT INTO #People (PersonName) VALUES ('Brett'), ('John'), ('Mark'), ('Shawn'), ('Ryan'), ('Kevin');
INSERT INTO #People2 (PersonName) VALUES ('Emily'), ('Beth'), ('Jane'), ('Hannah');

--I. getting an output for a single output variable dynamically
--Say I just want to get Ryan by his Id dynamically and output it
--I need to define one or many parameters OUTSIDE the scope of the Dynamic Sql
DECLARE @Output VARCHAR(8)
DECLARE @PersonId INT = 5

--I then need to associate the parameters as an array, for the purposes of explanation I will use DIFFERENT NAMES you may use the same
DECLARE @ParmDefinition NVARCHAR(500) = N'@PersonIdInside Int, @OutputInside varchar(8) OUTPUT'

--I then use the names ABOVE in the dynamic sql
DECLARE @SQL NVARCHAR(Max) = N'Select @OutputInside = PersonName from #People Where PersonId = @PersonIdInside'

-- I then do the following AFTER the sp_executesql 1. The Dynamic sql nvarchar, 2. The params nvarchar 3. one or many variables and how they associate
EXEC sp_executesql @Sql, @ParmDefinition, @PersonIdInside = @PersonId, @OutputInside = @Output OUTPUT

-- I have an output so now it should show what I want
SELECT @Output

-- II. getting a result set dymamically to another record set or table OUTSIDE the scope of the internal
-- Create another table, I use a #table for example purposes 
IF OBJECT_ID('tempdb..#Output') IS NOT NULL DROP TABLE tempdb..#Output

CREATE TABLE #Output (PersonId INT IDENTITY, PersonName VARCHAR(8))

--Get a truncated list for an 'in' statement later of person Id's in a variable
DECLARE @People NVarchar(32) = N'1, 5, 10'

--I then use the @People ABOVE in the dynamic sql putting it together and then do an 'insert statement first'
DECLARE @SQL2 NVARCHAR(Max) = N'Insert Into #Output SELECT PersonName FROM (SELECT * FROM #People UNION SELECT * FROM #People2) as x Where PersonId in (' + @People + ')'

--execute yields nothing
EXEC sp_executesql @Sql2

-- or does it?
Select *
From #Output

-- !!! WARNING !!!
-- With dynamic sql you cannot nest multiple dynamic sql statements inside of procs.  EG: Proc1 cannot call Proc2 and both of them have dynamic sql in them.  Engine limitation.

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