SQL Server Sysobjects Types (Version 2019)

MS SQL Server stores the information about the objects (tables, views, functions, etc) stored in the database in a table, which is accessible by selecting from the sys.objects view. The type of object is given by the column “type”

I collected this cross-version information from Microsoft Docs online, but fixed a couple of historical mistakes there.

Object type: 2008 2012 2016 2019
sys.objects.type
AF Aggregate function (CLR) x x x x
C CHECK constraint x x x x
D DEFAULT (constraint or stand-alone) x x x x
EC Edge constraint x
ET External Table x x
F FOREIGN KEY constraint x x x x
FN SQL scalar function x x x x
FS Assembly (CLR) scalar function x x x x
FT Assembly (CLR) table-valued function x x x x
IF SQL inline table-valued function x x x x
IT Internal table x x x x
P SQL stored procedure x x x x
PC Assembly (CLR) stored procedure x x x x
PG Plan guide x x x x
PK PRIMARY KEY constraint x x x x
R Rule (old-style, stand-alone) x x x x
RF Replication-filter-procedure x x x x
S System base table x x x x
SN Synonym x x x x
SO Sequence object x x x
SQ Service queue x x x x
TA Assembly (CLR) DML trigger x x x x
TF SQL table-valued-function x x x x
TR SQL DML trigger x x x x
TT Table type x x x x
U Table (user-defined) x x x x
UQ UNIQUE constraint x x x x
V View x x x x
X Extended stored procedure x x x x

The sys.objects.type_desc column contains the description corresponding to the type:

type sys.objects.type_desc
AF AGGREGATE_FUNCTION
C CHECK_CONSTRAINT
D DEFAULT_CONSTRAINT
EC
ET
F FOREIGN_KEY_CONSTRAINT
FN SQL_SCALAR_FUNCTION
FS CLR_SCALAR_FUNCTION
FT CLR_TABLE_VALUED_FUNCTION
IF SQL_INLINE_TABLE_VALUED_FUNCTION
IT INTERNAL_TABLE
P SQL_STORED_PROCEDURE
PC CLR_STORED_PROCEDURE
PG PLAN_GUIDE
PK PRIMARY_KEY_CONSTRAINT
R RULE
RF REPLICATION_FILTER_PROCEDURE
S SYSTEM_TABLE
SN SYNONYM
SO SEQUENCE_OBJECT
SQ SERVICE_QUEUE
TA CLR_TRIGGER
TF SQL_TABLE_VALUED_FUNCTION
TR SQL_TRIGGER
TT TYPE_TABLE
U USER_TABLE
UQ UNIQUE_CONSTRAINT
V VIEW
X EXTENDED_STORED_PROCEDURE

My previous post on this topic only covered SQL Server up to version 2008.

1 thought on “SQL Server Sysobjects Types (Version 2019)

  1. Pingback: SQL Server Sysobjects Types | devioblog

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