que - sql consultas dinámicas

Obtener el resultado de SQL dinámico en una variable para sql-server

Question

Ejecución de SQL dinámico de la siguiente manera en Procedimiento almacenado:

DECLARE @sqlCommand nvarchar(1000)
DECLARE @city varchar(75)
SET @city = ''London''
SET @sqlCommand = ''SELECT COUNT(*) FROM customers WHERE City = @city''
EXECUTE sp_executesql @sqlCommand, N''@city nvarchar(75)'', @city = @city

¿Cómo uso el valor de la columna de conteo (*) como valor de retorno en el SP?

Answer 1

Probablemente haya intentado esto, pero ¿son sus especificaciones tales que puede hacer esto?

DECLARE @city varchar(75)
DECLARE @count INT
SET @city = ''London''
SELECT @count = COUNT(*) FROM customers WHERE City = @city

Answer 2

esto podría ser una solución?

declare @step2cmd nvarchar(200)
DECLARE @rcount NUMERIC(18,0)   
set @step2cmd = ''select count(*) from uat.ap.ztscm_protocollo'' --+ @nometab
EXECUTE @rcount=sp_executesql @step2cmd
select @rcount

Answer 3

versión dinámica

    ALTER PROCEDURE [dbo].[ReseedTableIdentityCol](@p_table varchar(max))-- RETURNS int
    AS
    BEGIN
        -- Declare the return variable here
       DECLARE @sqlCommand nvarchar(1000)
       DECLARE @maxVal INT
       set @sqlCommand = ''SELECT @maxVal = ISNULL(max(ID),0)+1 from ''+@p_table
       EXECUTE sp_executesql @sqlCommand, N''@maxVal int OUTPUT'',@maxVal=@maxVal OUTPUT
       DBCC CHECKIDENT(@p_table, RESEED, @maxVal)
    END


exec dbo.ReseedTableIdentityCol @p_table=''Junk''

Answer 4

 vMYQUERY := ''SELECT COUNT(*) FROM ALL_OBJECTS WHERE OWNER = UPPER(''''MFI_IDBI2LIVE'''') AND OBJECT_TYPE = ''''TABLE'''' 
    AND OBJECT_NAME  ='''''' || vTBL_CLIENT_MASTER || '''''''';
    PRINT_STRING(VMYQUERY);
    EXECUTE IMMEDIATE  vMYQUERY INTO VCOUNTTEMP ;

Answer 5

DECLARE @sqlCommand nvarchar(1000)
DECLARE @city varchar(75)
DECLARE @cnt int
SET @city = ''London''
SET @sqlCommand = ''SELECT @cnt=COUNT(*) FROM customers WHERE City = @city''
EXECUTE sp_executesql @sqlCommand, N''@city nvarchar(75)'', @city = @city
RETURN @cnt

Answer 6

DECLARE @sqlCommand nvarchar(1000)
DECLARE @city varchar(75)
declare @counts int
SET @city = ''New York''
SET @sqlCommand = ''SELECT @cnt=COUNT(*) FROM customers WHERE City = @city''
EXECUTE sp_executesql @sqlCommand, N''@city nvarchar(75),@cnt int OUTPUT'', @city = @city, @cnt=@counts OUTPUT
select @counts as Counts