Here is the situation my friend came up with -
list all the databases and tables with containing one specific column
he required this info because his project was under migration and they were looking for this kind of information .. The query shared here can be modified to find Most commonly used column name across databases
Query does 2 things
- Loops over databases having test at the start of their name
- Finds out the column across tables using Information_schema.Columns
IF object_id('tempdb..#t') is not null
drop table #t
create table #t
(
dbname varchar(1000),
table_name varchar(1000)
)
insert into #t (dbname,table_name)
exec sp_msforeachdb
'
use ?
IF (''?'' in (select name from sys.databases where name like ''test%''))
begin
print ''?''
select ''?'' ,table_name
from ?.information_schema.columns
where column_name =''studentid'' and table_name like ''%test''
end
'
select * from #t
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