使用主鍵將表從一個數據庫移動到另一個數據庫

Question

我想使用動態SQL查詢將表從一個數據庫移動到另一個數據庫。我有一個存儲過程來移動表，但它不與工作臺移動的主鍵

這是我的代碼：

set @cSQL='Select Name from '+@cSDBName+'.sys.tables where Type=''U''' 

Insert into #t1Table 
exec (@cSQL) 

while((select count(tName) from #t1Table)>0) 
begin 
    select top 1 @cName=tName from #t1Table 
    set @cSQL='Select * into '+@cDBName+'.dbo.'+@cName+' from '+@cSDBName+'.dbo.'+@cName +' where 1=2' 
    exec(@cSQL) 
    delete from #t1Table where tName=@cName 
end 

這裏@cSDBName在源數據庫的名稱和@cSQL是SQL聲明。

但這個過程不會移動的主鍵

誰能幫助我？

Answer 1

看到這個...

Clones an existing table to another table (without data) 
    Optionally drops and re-creates target table 
    Copies: 
     * Structure 
     * Primary key 
     * Indexes (including ASC/DESC, included columns, filters) 
     * Constraints (and unique constraints) 

    DOES NOT copy: 
     * Triggers 
     * File groups 
     * Probably a lot of other things 

    Note: Assumes that you name (unique) constraints with the table name in it (in order to not duplicate constraint names) 
*/ 
SET NOCOUNT ON; 

BEGIN TRANSACTION 

--drop the table 
if EXISTS (SELECT * FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA = @DestinationSchema AND TABLE_NAME = @DestinationTable) 
BEGIN 
    if @RecreateIfExists = 1 
    BEGIN 
     exec('DROP TABLE [' + @DestinationSchema + '].[' + @DestinationTable + ']') 
    END 
    ELSE 
     RETURN 
END 

--create the table 
exec('SELECT TOP (0) * INTO [' + @DestinationSchema + '].[' + @DestinationTable + '] FROM [' + @SourceSchema + '].[' + @SourceTable + ']') 

DECLARE @PKSchema nvarchar(255), @PKName nvarchar(255) 
SELECT TOP 1 @PKSchema = CONSTRAINT_SCHEMA, @PKName = CONSTRAINT_NAME FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS WHERE TABLE_SCHEMA = @SourceSchema AND TABLE_NAME = @SourceTable AND CONSTRAINT_TYPE = 'PRIMARY KEY' 

--create primary key 
IF NOT @PKSchema IS NULL AND NOT @PKName IS NULL 
BEGIN 
    DECLARE @PKColumns nvarchar(MAX) 
    SET @PKColumns = '' 

    SELECT @PKColumns = @PKColumns + '[' + COLUMN_NAME + '],' 
     FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE 
     where TABLE_NAME = @SourceTable and TABLE_SCHEMA = @SourceSchema AND CONSTRAINT_SCHEMA = @PKSchema AND CONSTRAINT_NAME= @PKName 
     ORDER BY ORDINAL_POSITION 

    SET @PKColumns = LEFT(@PKColumns, LEN(@PKColumns) - 1) 

    exec('ALTER TABLE [' + @DestinationSchema + '].[' + @DestinationTable + '] ADD CONSTRAINT [PK_' + @DestinationTable + '] PRIMARY KEY CLUSTERED (' + @PKColumns + ')'); 
END 

--create other indexes 
DECLARE @IndexId int, @IndexName nvarchar(255), @IsUnique bit, @IsUniqueConstraint bit, @FilterDefinition nvarchar(max) 

DECLARE indexcursor CURSOR FOR 
SELECT index_id, name, is_unique, is_unique_constraint, filter_definition FROM sys.indexes WHERE type = 2 and object_id = object_id('[' + @SourceSchema + '].[' + @SourceTable + ']') 
OPEN indexcursor; 
FETCH NEXT FROM indexcursor INTO @IndexId, @IndexName, @IsUnique, @IsUniqueConstraint, @FilterDefinition; 
WHILE @@FETCH_STATUS = 0 
    BEGIN 
     DECLARE @Unique nvarchar(255) 
     SET @Unique = CASE WHEN @IsUnique = 1 THEN ' UNIQUE ' ELSE '' END 

     DECLARE @KeyColumns nvarchar(max), @IncludedColumns nvarchar(max) 
     SET @KeyColumns = '' 
     SET @IncludedColumns = '' 

     select @KeyColumns = @KeyColumns + '[' + c.name + '] ' + CASE WHEN is_descending_key = 1 THEN 'DESC' ELSE 'ASC' END + ',' from sys.index_columns ic 
     inner join sys.columns c ON c.object_id = ic.object_id and c.column_id = ic.column_id 
     where index_id = @IndexId and ic.object_id = object_id('[' + @SourceSchema + '].[' + @SourceTable + ']') and key_ordinal > 0 
     order by index_column_id 

     select @IncludedColumns = @IncludedColumns + '[' + c.name + '],' from sys.index_columns ic 
     inner join sys.columns c ON c.object_id = ic.object_id and c.column_id = ic.column_id 
     where index_id = @IndexId and ic.object_id = object_id('[' + @SourceSchema + '].[' + @SourceTable + ']') and key_ordinal = 0 
     order by index_column_id 

     IF LEN(@KeyColumns) > 0 
      SET @KeyColumns = LEFT(@KeyColumns, LEN(@KeyColumns) - 1) 

     IF LEN(@IncludedColumns) > 0 
     BEGIN 
      SET @IncludedColumns = ' INCLUDE (' + LEFT(@IncludedColumns, LEN(@IncludedColumns) - 1) + ')' 
     END 

     IF @FilterDefinition IS NULL 
      SET @FilterDefinition = '' 
     ELSE 
      SET @FilterDefinition = 'WHERE ' + @FilterDefinition + ' ' 

     if @IsUniqueConstraint = 0 
      exec('CREATE ' + @Unique + ' NONCLUSTERED INDEX [' + @IndexName + '] ON [' + @DestinationSchema + '].[' + @DestinationTable + '] (' + @KeyColumns + ')' + @IncludedColumns + @FilterDefinition) 
     ELSE 
      BEGIN 
       SET @IndexName = REPLACE(@IndexName, @SourceTable, @DestinationTable) 
       exec('ALTER TABLE [' + @DestinationSchema + '].[' + @DestinationTable + '] ADD CONSTRAINT [' + @IndexName + '] UNIQUE NONCLUSTERED (' + @KeyColumns + ')'); 
      END 

     FETCH NEXT FROM indexcursor INTO @IndexId, @IndexName, @IsUnique, @IsUniqueConstraint, @FilterDefinition; 
    END; 
CLOSE indexcursor; 
DEALLOCATE indexcursor; 

--create constraints 
DECLARE @ConstraintName nvarchar(max), @CheckClause nvarchar(max) 
DECLARE constraintcursor CURSOR FOR 
    SELECT REPLACE(c.CONSTRAINT_NAME, @SourceTable, @DestinationTable), CHECK_CLAUSE from INFORMATION_SCHEMA.CONSTRAINT_TABLE_USAGE t 
    INNER JOIN INFORMATION_SCHEMA.CHECK_CONSTRAINTS c ON c.CONSTRAINT_SCHEMA = TABLE_SCHEMA AND c.CONSTRAINT_NAME = t.CONSTRAINT_NAME 
    WHERE TABLE_SCHEMA = @SourceSchema AND TABLE_NAME = @SourceTable 
OPEN constraintcursor; 
FETCH NEXT FROM constraintcursor INTO @ConstraintName, @CheckClause; 
WHILE @@FETCH_STATUS = 0 
    BEGIN 
     exec('ALTER TABLE [' + @DestinationSchema + '].[' + @DestinationTable + '] WITH CHECK ADD CONSTRAINT [' + @ConstraintName + '] CHECK ' + @CheckClause) 
     exec('ALTER TABLE [' + @DestinationSchema + '].[' + @DestinationTable + '] CHECK CONSTRAINT [' + @ConstraintName + ']') 
     FETCH NEXT FROM constraintcursor INTO @ConstraintName, @CheckClause; 
    END; 
CLOSE constraintcursor; 
DEALLOCATE constraintcursor; 

COMMIT TRANSACTION 

END

Answer 2

那麼，你寫的查詢只會移動數據。你沒有在任何地方指定主鍵。

您需要通過腳本輸入create the tables或通過腳本輸入alter the table來定義主鍵。