在所有数据库中搜索关键字（适合轻量级数据库），可将以下脚本直接拷贝使用，注意留意注解：
drop table #Retrieve
set nocount on
Declare @UserDB varchar(100)
declare @str varchar(100)
set @str='VGC' --your string to be retrieved
create table #Retrieve(Retrieve_Info varchar(200))
Declare DBName cursor
for
select name from sys.databases where name not in
(N'master', N'model', N'msdb', N'tempdb', N'distribution', N'DWDiagnostics', N'DWConfiguration', N'DWQueue', N'resource',N'ReportServer',N'ReportServerTempDB')
--Note：若可以明确所查关键字在哪个数据库（比如A）中，可以将上一行where name not in
--(N'master', N'model', N'msdb', N'tempdb', N'distribution', N'DWDiagnostics', N'DWConfiguration', N'DWQueue', --N'resource',N'ReportServer',N'ReportServerTempDB')改为where name in ('A')
open DBName;
fetch next from DBName into @UserDB;
while @@FETCH_STATUS=0
begin
Declare @column_sql varchar(1000)
set @column_sql=
'DECLARE columnCursor CURSOR FOR SELECT ''['' + table_catalog + ''].['' + table_schema + ''].['' +
table_name + '']'' as tableName,''['' + table_catalog + ''].['' + table_schema + ''].['' +
table_name + ''].['' + column_name + '']'' as columnName FROM [' + @UserDB + '].INFORMATION_SCHEMA.columns a
where a.table_NAME in (select name from '+quotename(@UserDB,'[]')+'.sys.tables) and a.table_NAME <>'+'''sysdiagrams'''
--print(@column_sql)
exec(@column_sql)
declare @Column_name varchar(100)
declare @tablename varchar(100)
open columnCursor
fetch next from columnCursor into @tablename,@Column_name;
while @@FETCH_STATUS=0
begin
declare @retrieve varchar(1000)
declare @retrieve2 varchar(1000)
declare @count int
set @retrieve='declare @rowcount int;
select '+@Column_name+' from '+@tablename+' where convert(varchar(200),'+@Column_name+') like '+QUOTENAME('%'+@str+'%','''')
--print (@retrieve)
insert into #Retrieve exec (@retrieve)
select @count=count(1) from #Retrieve
if @count>0
begin
set @retrieve2='select * from '+@tablename+' where convert(varchar(200),'+@Column_name+') like '+QUOTENAME('%'+@str+'%','''')
--print (@retrieve2)
exec (@retrieve2)
delete from #Retrieve
end
else
continue
fetch next from columnCursor into @tablename,@Column_name;
end
close columnCursor
DEALLOCATE columnCursor
fetch next from DBName into @UserDB;
end
close DBName
DEALLOCATE DBName
set nocount off