从名称表中选择表中的所有行是Nvarchar

时间:2014-07-10 09:26:05

标签: sql sql-server select stored-procedures dynamicquery

我将通过SQL查询创建过程并拥有@name_tablenvarchar)。

如何使用多个表的一个程序不使用EXEC

示例:

CREATE TABLE tbl_produces
(
   id int primary key,
   name nvarchar(250)
)
GO

INSERT INTO tbl_produces VALUES (1, 'abc'), (2, 'cde'), (3, 'hfd')
GO

CREATE PROCEDURE return_table
(
   @table_name nvarchar(250)
)
AS
  SELECT * FROM @table_name  
  RETURN
  GO

EXEC return_table 'tbl_produces' " = " SELECT * FROM tbl_produces

"

我该怎么做?帮我!谢谢你的帮助

我不想使用

CREATE PROCEDURE return_table
(
   @table_name_ nvarchar(250)
)
AS
  DECLARE @sqlStr nvarchar(max) ,
          @ParmDefinition nvarchar(MAX) 
  Set @sqlStr = 'SELECT * FROM @table_name' 
  SET @ParmDefinition = N'@table_name nvarchar(250),
  EXECUTE sp_executesql @sqlStr,
                        @ParmDefinition,
                        @table_name = @table_name_
  RETURN
  GO

我不想使用EXECUTE可以返回表


可以查看您是否使用查询

CREATE PROCEDURE return_table
(
   @table_name_ nvarchar(250)
)
AS
  DECLARE @sqlStr nvarchar(max) ,
          @ParmDefinition nvarchar(MAX) 
  Set @sqlStr = 'SELECT * FROM @table_name' 
  SET @ParmDefinition = N'@table_name nvarchar(250),
  EXECUTE sp_executesql @sqlStr,
                        @ParmDefinition,
                        @table_name = @table_name_
  RETURN
  GO
当我想要创建1个函数时

用于多个表

CREATE FUNCTION [dbo].[DanhSachNhaCungCap] ( ) -- Thong Tin Nha Cung Cap
RETURNS  TABLE 
AS
RETURN
(
    select * from 
    ( 
       SELECT 'EXEC return_table ''tblProduct_01''' AS sp_executesql
       UNION ALL 
       SELECT 'EXEC return_table ''tblProduct_02''' AS sp_executesql     
    ) AS T
)
GO

- >它失败了

2 个答案:

答案 0 :(得分:2)

试试这个:

CREATE TABLE tbl_produces
(
   id int primary key,
   name nvarchar(250)
)
GO

INSERT INTO tbl_produces VALUES (1, 'abc'), (2, 'cde'), (3, 'hfd')
GO
CREATE PROCEDURE return_table
(
   @table_name nvarchar(250)
)
AS
  DECLARE @V_Query NVARCHAR(MAX);
  SET @V_Query = 'SELECT * FROM ' + @table_name;

  EXEC sp_executesql @V_Query
  GO

EXEC return_table 'tbl_produces' 

答案 1 :(得分:1)

您是否尝试过sp_executesql

sp_executesql 'select * from ' + @tableName

Documentation here