SQL Server存储过程语法

Question

I am not really a SQL man, so I'm struggling. What is wrong with "program" below that is preventing me from creating this stored procedure? Any help or clean up suggestions would be great.

ALTER PROCEDURE [dbo].[CreateHaystackExportJob_Program]
    -- Add the parameters for the stored procedure here
    @ID AS VARCHAR
AS
BEGIN
    -- SET NOCOUNT ON added to prevent extra result sets from
    -- interfering with SELECT statements.
    SET NOCOUNT ON;

    DECLARE @JobCount AS INT

    SELECT 
        @JobCount = COUNT (*) 
    FROM 
        dbo.HaystackExportJobs
    WHERE 
        ID = @ID AND ExportType = "program" 

    IF @JobCount = 0
        INSERT INTO dbo.HaystackExportJobs (ID,ExportType) VALUES (@ID,"program")

END

Answer 1

A few things, first you should include a length on the @id parameter.

Second, string values in SQL Server should be in single quotes so remove the double quotes and replace them with single quotes around "program" . So your code will be similar to this:

CREATE PROCEDURE [dbo].[CreateHaystackExportJob_Program]
    -- Add the parameters for the stored procedure here
    @ID AS VARCHAR(50) -- place a length on this parameter or an int if this is numeric
AS
BEGIN
    -- SET NOCOUNT ON added to prevent extra result sets from
    -- interfering with SELECT statements.
    SET NOCOUNT ON;

    DECLARE @JobCount AS INT

    SELECT 
        @JobCount = COUNT (*) 
    FROM 
        dbo.HaystackExportJobs
    WHERE 
        ID = @ID 
        AND ExportType = 'program' 

    IF @JobCount = 0
        INSERT INTO dbo.HaystackExportJobs (ID,ExportType) 
        VALUES (@ID,'program')

END

See SQL Fiddle with Demo

Answer 2

Odd things:

1. the parameter is declared varchar without a size.
2. Can't use quotes to encapsulate strings. You need to use aprostrophes.

Answer 3

Use single quotes, not double quotes. Here is an example of where you use double quotes. ExportType = "program"