How to Select tables names to this query - sql-server

Question

I want to select phone numbers from all tables in my databese and names of these tables too. I write a query that shows me all phone_numbers but I dont't know how to select table name to each phone number. This is my query:
DECLARE #SQL AS VarChar(MAX)
SET #SQL = ''
SELECT #SQL = #SQL + 'SELECT phone_number FROM ' + TABLE_SCHEMA + '.[' + TABLE_NAME + ']' + CHAR(13)
FROM INFORMATION_SCHEMA.TABLES where table_name in (select table_name
from information_schema.columns
where column_name = 'phone_number'
)

Answer 1

You can simply add the table name as a constant to the SELECT clause. But, I presume you're going to want to run this query, which means you have a few more things to change:
You're probably going to want sp_executesql, which requires a Unicode variable. So, you need to DECLARE #SQL NVARCHAR(MAX).
Do you want one result set or multiple result sets? I'm guessing you want all the results in one result set, which means you're going to want to use UNION ALL between the parts of the query.
So, try something like this:
DECLARE #sql NVARCHAR(MAX)
SET #sql = N'SELECT '''' AS table_name, '''' AS phone_number FROM [dbo].[SomeTable] WHERE 1 = 0'
DECLARE #table_name SYSNAME
DECLARE cur CURSOR LOCAL FAST_FORWARD FOR
SELECT table_name
FROM INFORMATION_SCHEMA.columns
WHERE column_name = 'phone_number'
OPEN cur
FETCH NEXT FROM cur INTO #table_name
WHILE ##FETCH_STATUS = 0
BEGIN
SET #sql = #sql + N' UNION ALL SELECT ''' + #table_name + N''', phone_number FROM [' + #table_name + N']'
FETCH NEXT FROM cur INTO #table_name
END
CLOSE cur
DEALLOCATE cur
EXEC sp_executesql #sql
When I used [dbo].[SomeTable], just use some table that you know exists. You would also need to modify the query if you want fully-qualified table names, but the above should get you started.

Answer 2

Another solution without CURSOR. You could combine each query with UNION like this.
--SELECT DISTINCT phone_number FROM dbo.Course c
DECLARE #sql nvarchar(max) = ''
SELECT #sql = #sql + N' SELECT DISTINCT phone_number, '''+ s.name + '.' + t.name + ''' AS TableName
FROM '+ s.name + '.' + t.name + Char(13) + ' UNION' + char(13)
FROM sys.tables t
INNER JOIN sys.schemas s ON t.schema_id = s.schema_id
INNER JOIN sys.columns c ON c.object_id = t.object_id
WHERE c.name ='phone_number'
IF(#sql != '')
BEGIN
SET #sql = LEFT(#sql,len(#sql) - 6) -- remove last UNION
PRINT #sql
-- execute sql
EXEC sp_executesql #sql
END
I also add column TableName: Table of phone_number
If you want TableName if the first column then change it
SELECT #sql = #sql + N' SELECT DISTINCT '''+ s.name + '.' + t.name + ''' AS TableName, phone_number
FROM '+ s.name + '.' + t.name + Char(13) + ' UNION' + char(13)