Thursday, 9 May 2013

sys.objects (Transact-SQL)

           
                   
Contains a row for each user-defined, schema-scoped object that is created within a database.

Note Note
sys.objects does not show DDL triggers, because they are not schema-scoped. All triggers, both DML and DDL, are found in sys.triggers. sys.triggers supports a mixture of name-scoping rules for the various kinds of triggers.
Column nameData typeDescription
namesysname Object name.
object_idint Object identification number. Is unique within a database.
principal_idint ID of the individual owner, if different from the schema owner. By default, schema-contained objects are owned by the schema owner. However, an alternate owner can be specified by using the ALTER AUTHORIZATION statement to change ownership.
Is NULL if there is no alternate individual owner.
Is NULL if the object type is one of the following:
C = CHECK constraint
D = DEFAULT (constraint or stand-alone)
F = FOREIGN KEY constraint
PK = PRIMARY KEY constraint
R = Rule (old-style, stand-alone)
TA = Assembly (CLR-integration) trigger
TR = SQL trigger
UQ = UNIQUE constraint
schema_idint ID of the schema that the object is contained in.
Schema-scoped system objects are always contained in the sys or INFORMATION_SCHEMA schemas.
parent_object_idint ID of the object to which this object belongs.
0 = Not a child object.
typechar(2) Object type:
AF = Aggregate function (CLR)
C = CHECK constraint
D = DEFAULT (constraint or stand-alone)
F = FOREIGN KEY constraint
FN = SQL scalar function
FS = Assembly (CLR) scalar-function
FT = Assembly (CLR) table-valued function
IF = SQL inline table-valued function
IT = Internal table
P = SQL Stored Procedure
PC = Assembly (CLR) stored-procedure
PG = Plan guide
PK = PRIMARY KEY constraint
R = Rule (old-style, stand-alone)
RF = Replication-filter-procedure
S = System base table
SN = Synonym
SO = Sequence object
SQ = Service queue
TA = Assembly (CLR) DML trigger
TF = SQL table-valued-function
TR = SQL DML trigger
TT = Table type
U = Table (user-defined)
UQ = UNIQUE constraint
V = View
X = Extended stored procedure
type_descnvarchar(60) Description of the object type:
AGGREGATE_FUNCTION
CHECK_CONSTRAINT
CLR_SCALAR_FUNCTION
CLR_STORED_PROCEDURE
CLR_TABLE_VALUED_FUNCTION
CLR_TRIGGER
DEFAULT_CONSTRAINT
EXTENDED_STORED_PROCEDURE
FOREIGN_KEY_CONSTRAINT
INTERNAL_TABLE
PLAN_GUIDE
PRIMARY_KEY_CONSTRAINT
REPLICATION_FILTER_PROCEDURE
RULE
SEQUENCE_OBJECT
SERVICE_QUEUE
SQL_INLINE_TABLE_VALUED_FUNCTION
SQL_SCALAR_FUNCTION
SQL_STORED_PROCEDURE
SQL_TABLE_VALUED_FUNCTION
SQL_TRIGGER
SYNONYM
SYSTEM_TABLE
TABLE_TYPE
UNIQUE_CONSTRAINT
USER_TABLE
VIEW
create_datedatetime Date the object was created.
modify_date datetime Date the object was last modified by using an ALTER statement. If the object is a table or a view, modify_date also changes when a clustered index on the table or view is created or altered.
is_ms_shippedbit Object is created by an internal SQL Server component.
is_publishedbit Object is published.
is_schema_publishedbit Only the schema of the object is published.
You can apply the OBJECT_ID, OBJECT_NAME, and OBJECTPROPERTY() built-in functions to the objects shown in sys.objects.
There is a version of this view with the same schema, called sys.system_objects, that shows system objects. There is another view called sys.all_objects that shows both system and user objects. All three catalog views have the same structure.
In this version of SQL Server, an extended index, such as an XML index or spatial index, is considered an internal table in sys.objects (type = IT and type_desc = INTERNAL_TABLE). For an extended index:
  • name is the internal name of the index table.
  • parent_object_id is the object_id of the base table.
  • is_ms_shipped, is_published and is_schema_published columns are set to 0.
The visibility of the metadata in catalog views is limited to securables that a user either owns or on which the user has been granted some permission. For more information, see Metadata Visibility Configuration.

A. Returning all the objects that have been modified in the last N days

Before you run the following query, replace <database_name> and <n_days> with valid values.
USE <database_name>;
GO
SELECT name AS object_name 
  ,SCHEMA_NAME(schema_id) AS schema_name
  ,type_desc
  ,create_date
  ,modify_date
FROM sys.objects
WHERE modify_date > GETDATE() - <n_days>
ORDER BY modify_date;
GO


B. Returning the parameters for a specified stored procedure or function

Before you run the following query, replace <database_name> and <schema_name.object_name> with valid names.
USE <database_name>;
GO
SELECT SCHEMA_NAME(schema_id) AS schema_name
    ,o.name AS object_name
    ,o.type_desc
    ,p.parameter_id
    ,p.name AS parameter_name
    ,TYPE_NAME(p.user_type_id) AS parameter_type
    ,p.max_length
    ,p.precision
    ,p.scale
    ,p.is_output
FROM sys.objects AS o
INNER JOIN sys.parameters AS p ON o.object_id = p.object_id
WHERE o.object_id = OBJECT_ID('<schema_name.object_name>')
ORDER BY schema_name, o.object_name, p.parameter_id;
GO


C. Returning all the user-defined functions in a database

Before you run the following query, replace <database_name> with a valid database name.
USE <database_name>;
GO
SELECT name AS function_name 
  ,SCHEMA_NAME(schema_id) AS schema_name
  ,type_desc
  ,create_date
  ,modify_date
FROM sys.objects
WHERE type_desc LIKE '%FUNCTION%';
GO


D. Returning the owner of each object in a schema.

Before you run the following query, replace all occurrences of <database_name> and <schema_name> with valid names.
USE <database_name>;
GO
SELECT 'OBJECT' AS entity_type
    ,USER_NAME(OBJECTPROPERTY(object_id, 'OwnerId')) AS owner_name
    ,name 
FROM sys.objects WHERE SCHEMA_NAME(schema_id) = '<schema_name>'
UNION 
SELECT 'TYPE' AS entity_type
    ,USER_NAME(TYPEPROPERTY(SCHEMA_NAME(schema_id) + '.' + name, 'OwnerId')) AS owner_name
    ,name 
FROM sys.types WHERE SCHEMA_NAME(schema_id) = '<schema_name>' 
UNION
SELECT 'XML SCHEMA COLLECTION' AS entity_type 
    ,COALESCE(USER_NAME(xsc.principal_id),USER_NAME(s.principal_id)) AS owner_name
    ,xsc.name 
FROM sys.xml_schema_collections AS xsc JOIN sys.schemas AS s
    ON s.schema_id = xsc.schema_id
WHERE s.name = '<schema_name>';
GO


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