Creating Table with Table Name 由派生到 Procedure 的参数定义

Question

我正在尝试运行创建 table 的过程，table 名称基于传递给该过程的参数。

这是程序，我已经创建了：

Create PROCEDURE [dbo].[Creating_Table]
@number varchar(8)
AS

CREATE TABLE CONCAT(table_name,@number) (
column1 int,
column2 int,
column3 int  
    );
GO

有这方面的有效实施吗？

Answer 1

动态SQL会帮助你。

动态创建表是一件有风险的事情。

Create PROCEDURE [dbo].[Creating_Table]
@number varchar(8)
AS
BEGIN
    DECLARE @Query VARCHAR(1000),@TableName VARCHAR(100)
    SELECT @TableName = 'Table_'+ @number
    SELECT @Query = '

    CREATE TABLE '+@TableName+' (
        column1 int,
        column2 int,
        column3 int  
     );'

    EXEC (@Query)
END

Answer 2

或者，您可以使用已重命名的固定 "template table"

CREATE PROCEDURE [dbo].[Creating_Table] @number VARCHAR(8)
AS
BEGIN
    SET NOCOUNT ON;

    IF @number IS NULL
    BEGIN
        RETURN;
    END

    DECLARE @tablename NVARCHAR(128) = 'table_name' + @number;


    --table already exists, return
    IF OBJECT_ID('dbo.' + @tablename) IS NOT NULL
    BEGIN
        RETURN;
    END

    --if template does not exist, create it
    IF OBJECT_ID('dbo.template_table') IS NULL
    BEGIN
        CREATE TABLE dbo.template_table
        (
            column1 int,
            column2 int,
            column3 int  
        );  

    END

    --rename template
    EXEC sp_rename 'dbo.template_table', @tablename, N'OBJECT';

    RETURN;
END

Creating Table with Table Name 由派生到 Procedure 的参数定义

Creating Table with Table Name defined by a parameter derived into Procedure

tsql

sql-server

ddl

dynamic-sql