List all tables used in a SQL statement - sql-server

Question

Currently i have to create a list of all tables & schemes used in several (terribly) long SQL statements.
Of course i could go manually through the SQL statements and write down every table used in a JOIN, Subselect and so on.
But i'd be curious if there is any easier way to do it. maybe with a "simple" SQL statement, but i have no clue how to do it.
Why am i asking? I'd have to do this for about 50 SQL-Unload-Statements, where all of them use between 30 and 70 tables. I guess you can imagine this quite boring work
Thanks in advance for any input & hints!

Answer 1

Have a read here: How can i get the list of tables in the stored procedure
;WITH stored_procedures AS (
SELECT
o.name AS proc_name, oo.name AS table_name,
ROW_NUMBER() OVER(partition by o.name,oo.name ORDER BY o.name,oo.name) AS row
FROM sysdepends d
INNER JOIN sysobjects o ON o.id=d.id
INNER JOIN sysobjects oo ON oo.id=d.depid
WHERE o.xtype = 'P')
SELECT proc_name, table_name FROM stored_procedures
WHERE row = 1
ORDER BY proc_name,table_name
All credit to the OP of the code above in the thread above.

Answer 2

I will post this answer & mark it as solved, as it was the best and easiest way to solve my issue.
Hint was in a comment by #whereisSQL (thanks a lot!)
Seems like it was already asked in this thread, but i didn't find it:
https://dba.stackexchange.com/questions/121346/need-to-get-identify-all-tables-and-columns-in-a-sql-query/121355#121355
There is an online "get table column" tool to list the tables of a SQL statement here:
http://107.170.101.241:8080/getTableColumn/
It lists all tables and additionally columns used in the statement! Perfect solution in my case.

Answer 3

This may help. Using DMVs
IF EXISTS (
SELECT *
FROM sys.objects
WHERE object_id = OBJECT_ID(N'[dbo].[sp_dependsobj]')
AND type IN (
N'P'
,N'PC'
)
)
DROP PROCEDURE [dbo].[sp_dependsobj]
GO
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE PROCEDURE [dbo].[sp_dependsobj] (#Objname NVARCHAR(2000))
AS
BEGIN
SET NOCOUNT ON
DECLARE #ObjID INTEGER
DECLARE #ObjType VARCHAR(100)
DECLARE #RowCount INTEGER = 0
SELECT #ObjID = OBJECT_ID(#Objname)
SELECT #ObjType = TYPE
FROM sys.objects
WHERE object_id = #ObjID
DECLARE #RefObjects AS TABLE (
[Object_name] SYSNAME
,[Type] VARCHAR(255)
,referenced_entity_name SYSNAME
,Column_name SYSNAME NULL
,referenced_entity_type VARCHAR(255)
)
DECLARE #FoundIn AS TABLE (
[Object_name] SYSNAME
,[Found In] SYSNAME
,[Type] VARCHAR(255)
)
DECLARE #SQLStr VARCHAR(MAX)
SET #SQLStr = '
WITH CTE_Objects
AS
(
SELECT o.NAME referencing_entity_name
,o.type_desc referencing_object_type
,sed.referenced_entity_name
,refobj.referenced_minor_name
,obj.type_desc
,obj.object_id
FROM sys.sql_expression_dependencies sed
INNER JOIN sys.objects o ON sed.referencing_id = o.[object_id]
INNER JOIN sys.objects obj ON sed.referenced_entity_name = obj.name
INNER JOIN sys.dm_sql_referenced_entities(''dbo.' + #Objname + ''', ''OBJECT'') refobj ON
refobj.referenced_id = sed.referenced_id
WHERE o.NAME = ''' + #Objname + '''
UNION
SELECT ''' + #Objname + ''', (SELECT type_desc from sys.objects where name = ''' + #Objname + '''), referenced_entity_name, NULL, obj.type_desc
,obj.object_id
FROM sys.dm_sql_referenced_entities (''dbo.' + '' + #Objname +
''', ''OBJECT'') refObj INNER JOIN sys.objects obj
ON refObj.referenced_entity_name = obj.name
)
SELECT CTE.referencing_entity_name Object_name, CTE.referencing_object_type Type, CTE.referenced_entity_name, CTE.referenced_minor_name Column_name, CTE.type_desc referenced_entity_type
FROM CTE_Objects CTE LEFT JOIN sys.columns cl ON
cte.object_id = cl.object_id AND cte.referenced_minor_name = cl.name
Order by cte.referencing_entity_name, CASE WHEN cte.referencing_entity_name IS NULL THEN 0 ELSE cl.column_id END
'
INSERT INTO #RefObjects (
[Object_name]
,[Type]
,referenced_entity_name
,Column_name
,referenced_entity_type
)
EXEC (#SQLStr)
SET #RowCount = ##ROWCOUNT
IF #RowCount > 0
BEGIN
SELECT *
FROM #RefObjects
END
SET #SQLStr = '
SELECT DISTINCT [Object Name] = o.NAME
,[Found In] = sp.NAME
,sp.type_desc Type
FROM sys.objects o
INNER JOIN sys.sql_expression_dependencies sd ON o.object_id = sd.referenced_id
INNER JOIN sys.objects sp ON sd.referencing_id = sp.object_id
WHERE o.NAME = ''' + #Objname + '''
UNION
SELECT ''' + #Objname + ''', referencing_entity_name, (SELECT type_desc from sys.objects where name = referencing_entity_name)
FROM sys.dm_sql_referencing_entities (''dbo.' + '' + #Objname + ''', ''OBJECT'');
'
INSERT INTO #FoundIn (
[Object_name]
,[Found In]
,[Type]
)
EXEC (#SQLStr)
SET #RowCount = ##ROWCOUNT
IF #RowCount > 0
BEGIN
SELECT *
FROM #FoundIn
END
IF NOT EXISTS (
SELECT 1
FROM #RefObjects
)
AND NOT EXISTS (
SELECT 1
FROM #FoundIn
)
BEGIN
PRINT 'Object does not reference any object, and no objects reference it.'
END
SET NOCOUNT OFF
END
GO

Answer 4

The question is old, but here is a regex for those that want the tables used in SQL statement (From/join).
I created it specially for my case, but it may be adapt and useful for others:
(from|join)[ ]{1,}[^.\n\ ]+?(?=(.))[.].*?(?=( |\n))