问题描述
CREATE TABLE [config].[datalist](
[id] [int] IDENTITY(1,1) NOT NULL,[order] [int] NULL,[dbname] sysname NULL,[schemaname] sysname NULL,[tablename] sysname NULL
)
GO
SET IDENTITY_INSERT [config].[datalist] ON
GO
INSERT [config].[datalist] ([id],[order],[dbname],[schemaname],[tablename]) VALUES (1,1,N'TEST',N'audit*',N'*')
GO
INSERT [config].[datalist] ([id],[tablename]) VALUES (7,2,N'conversie',N'BR')
GO
INSERT [config].[datalist] ([id],[tablename]) VALUES (8,3,N'datalibrary',N'T*')
GO
INSERT [config].[datalist] ([id],[tablename]) VALUES (9,N'BIML',N'*',N'*')
GO
SET IDENTITY_INSERT [config].[datalist] OFF
GO
SELECT [id],[tablename]
FROM [UITWISSEL].[config].[datalist]
给了我
id order dbname schemaname tablename
1 1 TEST audit* *
7 2 TEST conversie BR
8 3 TEST datalibrary T*
9 3 BIML * *
现在我需要的是表 config.datalist
所以我想要一个列表：
id 1) 数据库 TEST 中架构名以 audit 开头的所有表
id 7) 架构 TEST 中数据库 conversie 中名称为 BR 的所有表
id 8) 模式“datalibrary”中数据库 TEST 中名称以 T 开头的所有表
id 9) 数据库 BIML 中所有模式的所有表
我有以下代码，但我这仅适用于数据库 BIML。
如何让这段代码适用于 config.datalist.dbname 中提到的所有数据库？
select distinct t.name as TableName,'SELECT * FROM ' + quotename(replace(replace(ds.[dbname],'[',''),']',''))+'.'+
quotename(s.name)+'.'+
quotename(t.name) AS selectquery,s.name as schemaname,ds.[order]
from BIML.sys.schemas s
left join BIML.sys.tables t on s.schema_id = t.schema_id
inner join [UITWISSEL].[config].[datalist] ds on s.name like replace(ds.schemaname,'*','%') COLLATE DATABASE_DEFAULT
inner join [UITWISSEL].[config].[datalist] dt on t.name like replace(ds.tablename,'%') COLLATE DATABASE_DEFAULT
order by ds.[order],s.name,t.name
给了我
TableName selectquery schemaname order
connections SELECT * FROM [BIML].[config].[connections] config 3
FilesToImport SELECT * FROM [BIML].[config].[FilesToImport] config 3
解决方法
假设您正在对语句进行参数化以获取表列表，那么您可以这样做：
DECLARE @ListID int = 8; --Your parameter
DECLARE @SQL nvarchar(MAX),@CRLF nchar(2) = NCHAR(13) + NCHAR(10);
DECLARE @DatabaseName sysname,@SchemaName sysname,@TableName sysname;
SELECT @DatabaseName = REPLACE(dbname,'*','%'),@SchemaName = REPLACE(schemaname,@TableName = REPLACE(tablename,'%')
FROM config.datalist
WHERE id = @ListID;
SET @SQL = N'SELECT s.[name] AS SchemaName,' + @CRLF +
N' t.[name] AS TableName' + @CRLF +
N'FROM ' + QUOTENAME(@DatabaseName) + N'sys.schemas s' + @CRLF +
N' JOIN ' + QUOTENAME(@DatabaseName) + N'sys.tables t ON s.schema_id = t.schema_id' + @CRLF +
N'WHERE s.[name] LIKE @SchemaName' + @CRLF +
N' AND t.[name] LIKE @TableName;';
PRINT @SQL;
--EXEC sys.sp_executesql @SQL,N'@SchemaName sysname,@TableName sysname',@SchemaName,@TableName; --Uncomment to run
declare @i as int = 1
declare @db_list table (id int identity(1,1),dbname sysname,[order] int)
declare @resultlist table ([order] int,schemaname sysname,tablename sysname,selectquery nvarchar(4000))
declare @act_dbname sysname
declare @act_order int =1
declare @sql as nvarchar(4000)
insert into @db_list
select distinct dbname,[order] from UITWISSEL.[config].[datalist] order by [order]
while @i <= (select max(id) from @db_list)
BEGIN
set @act_dbname = (select dbname from @db_list where id = @i)
set @act_order = (select [order] from @db_list where id = @i)
set @sql = '
select distinct
'+ cast(@act_order as varchar(4)) + ' as [order],'''+ @act_dbname +''' as dbname,s.name as schemaname,t.name as tablename,''SELECT * FROM '' + quotename('''+ @act_dbname + ''')+''.''+
quotename(s.name)+''.''+
quotename(t.name)
AS selectquery
from '+ @act_dbname + '.sys.schemas s
left join '+ @act_dbname + '.sys.tables t on s.schema_id = t.schema_id
inner join [UITWISSEL].[config].[datalist] ds on s.name like replace(ds.schemaname,''*'',''%'') COLLATE DATABASE_DEFAULT
inner join [UITWISSEL].[config].[datalist] dt on t.name like replace(ds.tablename,''%'') COLLATE DATABASE_DEFAULT
order by [order],s.name,t.name
'
print @sql
insert into @resultlist exec sp_executesql @sql
set @i = @i+1
END
select * from @resultlist order by [order],schemaname,tablename