在一个表中显示多个数据库表

-- Create a new table variable to record all the database name
DECLARE @Database_Table table ([TimeStamp] nvarchar(500)
      ,[EventIDNo]  nvarchar(100)
      ,[EventDesc] nvarchar(1000))

--Create variable for database name and query variable
DECLARE @DB_Name VARCHAR(100) -- database name
DECLARE @query NVARCHAR(1000) -- query variable

--Declare the cursor 
DECLARE db_cursor CURSOR FOR
-- Populate the cursor with the selected database name
    SELECT name
    FROM sys.databases
    WHERE name NOT IN ('master','model','msdb','tempdb')

--Open the cursor
OPEN db_cursor
--Moves the cursor to the first point and put that in variable name
FETCH NEXT FROM db_cursor INTO @DB_Name
-- while loop to go through all the DB selected
WHILE @@FETCH_STATUS = 0
    BEGIN
        SET @query = N'INSERT INTO @Database_Table
                        SELECT @DB_Name, * 
                        FROM ['+ @DB_Name +'].dbo.EventLog_vw as A'
        EXEC (@query)
        --Fetch the next record from the cursor
        FETCH NEXT FROM db_cursor INTO @DB_Name
    END
--Close and deallocate cursor
CLOSE db_cursor
DEALLOCATE db_cursor

SELECT *
FROM @Database_Table

DECLARE @sql nvarchar(4000) =
    (SELECT STRING_AGG(CONCAT(
        'SELECT ''',
        QUOTENAME(name),
        ''',
        * FROM ',
        QUOTENAME(name),
        '..Table ',
        CHAR(10)
        ), ' UNION ALL ' + CHAR(10))
    FROM sys.databases);

SELECT @sql;  -- for checking
EXEC(@sql);