我正在创建一个sql脚本,我有2个游标循环通过数据表游标和公司游标。 我有把公司光标问题放在一起使用while循环将数据复制到架构 我需要回答使用If声明对SQL游标使用while循环?
以下问题是否表有companyID列? if语句为公司ID 检查,如果是,那么在光标
基于companyID数据复制我有一个@firstLoop宣布
这里是我的光标特定代码
DECLARE @firstLoop BIT
SET @firstLoop = true
----------- Cursor specific code starts here ------------
-- company cursor
declare copyCompanyDataCursor CURSOR fast_forward FOR
SELECT ID from #CompanyIDs;
open copyCompanyDataCursor
fetch next from copyCompanyDataCursor into @Company_Id;
WHILE @@FETCH_STATUS = 0
BEGIN
declare @processorder int;
declare @tablename varchar(500);
-- table cursor
declare copyTableDataCursor CURSOR fast_forward FOR
SELECT processorder,tablename from #TableList4 order by processorder;
open copyTableDataCursor
fetch next from copyTableDataCursor into @processorder, @tablename;
while @@FETCH_STATUS = 0
BEGIN
SET IDENTITY_INSERT [c365online_script1.dbo.tCompany] OFF
-- Does the table have a companyID column? if statement checking for company id
-- if yes then copy data based on companyID in cursor
-- if no check if this is the first time through company loop and copy all data
-- if @firstloop company exists look at information schema
-- insert into c365online_script1.dbo.tCompany(selec
EXEC('INSERT ' + @Destination_Database_Name + '.dbo.' + @tablename + ' SELECT * FROM ' + @Source_Database_Name + '.dbo.' + @tablename + ')')
-- company logic
SET IDENTITY_INSERT [c365online_script1.dbo.tCompany] ON
FETCH NEXT FROM copyTableDataCursor into @processorder,@tablename;
END
close copyTableDataCursor;
Deallocate copyTableDataCursor;
--INSERT INTO c365online_script1.dbo.tCompany
--SELECT *
--FROM production2.tCompany
--WHERE ISNULL(CompanyID, 0) = 0 -- copy all data where id is equal to zero
[email protected]_Database_Name
--
--EXEC(INSERT + @Destination_Database_Name + '.dbo.' + @tablename + ' SELECT * FROM ' + @Source_Database_Name + '.dbo.' + @tablename + ' WHERE ' + @Source_Database_Name + '.dbo.' + @tablename + '.CompanyID = ' + @Company_Id + ')'
SET @firstLoop = false;
FETCH NEXT FROM copyCompanyDataCursor into @Company_Id;
END
CLOSE copyCompanyDataCursor;
DEALLOCATE copyCompanyDataCursor;
呃,究竟是这一切的呢?如果你实际上试图复制一个模式,几乎可以肯定内置选项...... –
其目的是通过生成一个脚本来减小数据库的大小,你可以通过选择一个脚本来生成一个缩小的数据库很少有公司在特定的时间需要。架构已被复制到一个空数据库中,现在我需要填充它。 – user2520671
......如果你没有复制所有的表格,我会把相关表格放在他们自己的模式中。应该有默认生成的脚本,它们将复制模式表。也可能用于表格内容......也许。 _为什么你这样复制数据库?请注意,这实际上并不会减少主数据库的大小,因为您仍然拥有所有原始数据。 –