Finding Dependencies In SQL Server Objects

Lori Brown walks us through the sys.dm_sql_referencing_entities and referenced entities DMVs:

In both cases you can see that sys.sql_expression_dependencies provides the same basic info.  But when it comes to tables are referenced by a stored procedure, sys.sql_expression_dependencies gives you less detail than you can get when using sys.dm_sql_referenced_entities.  The biggest difference in both examples is that with sys.sql_expression_dependencies you will get info on cross-database and cross-server dependencies which can be super helpful.

However, once again I have to sound a note of caution because even sys.sql_expression_dependencies does not catch things referenced in a dynamic SQL string.  Sales.Orders is found in dynamic SQL in the, [Application].[Configuration_EnableInMemory] & [DataLoadSimulation].[Configuration_ApplyDataLoadSimulationProcedures] stored procedures but it does not catch this.  So far the best way to find objects in dynamic SQL strings that I know of is to check for the object in sys.sql_modules.

Read the whole thing.

Related Posts

New(ish) VLF Status: 4

Paul Randal points out a new VLF status which can appear if you’re using an Availability Group: At least since I started working on the SQL Server team (just after 7.0 shipped) and since then there have only been two VLF status codes: 0 = the VLF is not active (i.e. it can be (re)activated […]

Read More

What sys.dm_exec_query_stats Can Miss

Matthew McGiffen takes us through a scenario where sys.dm_exec_query_stats did not give a complete view of what was running on SQL Server: I got less than 50 rows back so figured I had everything covered, but the total elapsed time across all the queries was less than ten minutes, I knew the server hadn’t been […]

Read More

Categories

August 2018
MTWTFSS
« Jul Sep »
 12345
6789101112
13141516171819
20212223242526
2728293031