ssms ---如何在另一台服务器上使用2个表在一台服务器上创建一个表

Question

我需要在另一台服务器上使用2个表在服务器上创建一个表。

源服务器 下表1和表2的表定义相同 表1 ---- col 1，col2，col3 表2 ---- col4，col5，col6

目标服务器 表3 ---数据应该是表1和表2数据的结合

怎么做？感谢。

Answer 1

所以我创建了一个名为EmptyDatabase和Table1，Table2的测试数据库：

然后，根据您的需要，我创建了一个动态查询，该查询将生成此输出：CREATE TABLE dbo.Table3 (col1 varchar(50),col2 int,col3 decimal,col4 varchar(50),col5 int,col6 decimal)并将使用sp_executesql进行处理：

USE [EmptyDatabase]

-- Declare a temp table to store column names from Table 1 and 2.
DECLARE @TableColumns TABLE
(
    RowNumber int IDENTITY(1,1),
    TableName varchar(50),
    ColumnName varchar(50),
    DataType varchar(50),
    Lenght integer
)

-- Query 'Table1' column names and insert them into the @TableColumns table.
INSERT INTO @TableColumns
    SELECT
        'Table1' AS TableName,
        COLUMN_NAME,
        DATA_TYPE,
        CHARACTER_MAXIMUM_LENGTH
    FROM
        [EmptyDatabase].INFORMATION_SCHEMA.COLUMNS
    WHERE
        TABLE_NAME = N'Table1'

-- Query 'Table2' column names and insert them into the @TableColumns table.
INSERT INTO @TableColumns
    SELECT
        'Table2' AS TableName,
        COLUMN_NAME,
        DATA_TYPE,
        CHARACTER_MAXIMUM_LENGTH
    FROM
        [EmptyDatabase].INFORMATION_SCHEMA.COLUMNS
    WHERE
        TABLE_NAME = N'Table2'

-- Count total rows.
DECLARE @id int
DECLARE @totalrows int = (SELECT COUNT(*) FROM @TableColumns)
DECLARE @currentrow int = 1

-- Declare variables to query the row's data.
DECLARE @columnName varchar(50)
DECLARE @dataType varchar(50)
DECLARE @lenght int

-- Declare the custom string to construct your dynamic query.
DECLARE @query nvarchar(MAX)

-- Start creating your dinamic query.
SET @query = 'CREATE TABLE dbo.Table3 ('

-- Iterate through the results.
WHILE @currentrow <=  @totalrows  
BEGIN 
    -- Get the current row's data.
    SET @columnName = (SELECT ColumnName FROM @TableColumns WHERE RowNumber = @currentrow)
    SET @dataType = (SELECT DataType FROM @TableColumns WHERE RowNumber = @currentrow)
    SET @lenght = (SELECT Lenght FROM @TableColumns WHERE RowNumber = @currentrow)

    -- Add column declaration.
    SET @query += @columnName + ' ' + @dataType 

    -- If its a char type add its lenght.
    IF @dataType = 'varchar'
    BEGIN
        SET @query += '(' + CAST(@lenght AS VARCHAR) + ')'
    END

    -- Add a comma after column declaration except to the last one.
    IF @currentrow < @totalrows
    BEGIN
        SET @query += ','   
    END

    -- Next row.
    SET @currentrow += 1    
END

-- Terminate the dynamic query string.
SET @query += ')'

-- Execute the dynamic query to create the table.
EXEC sp_executesql @query

表格已创建：

这也可以使用CURSOR。

来完成