Creada el: 28/09/98 - Actualizada el: 28/09/98
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DECLARE Statement
Used to define the name and type of local variables for a batch or
procedure, and to define cursors.
DECLARE @<variable_name> <datatype>
[, @<variable_name> <datatype>...]
DECLARE Statement
Defines a cursor. Once declared, row sets for cursors are assigned by
using the OPEN statement. (The DECLARE statement can also be used to
define the name and type of local variables for a batch or procedure.)
DECLARE <cursor_name> [INSENSITIVE] [SCROLL] CURSOR
FOR <select_statement>
[FOR {READ ONLY | UPDATE [OF <column_list>]}]
DELETE Statement
Removes rows from a table.
DELETE [FROM] {<table_name> | <view_name>}
[WHERE clause]
Transact-SQL extension Syntax:
DELETE [FROM] {<table_name> | <view_name>}
[FROM {<table_name> | <view_name>}
[, {<table_name> | <view_name>}]...]
[..., {<table_name16> | <view_name16>}]]
[WHERE clause]
DISK INIT Statement
Creates a device on which a database or multiple databases can be
placed. A device is an operating-system file that SQL Server pre-
allocates for database use.
DISK INIT
NAME = '<logical_name>',
PHYSNAME = '<physical_name>',
VDEVNO = <virtual_device_number>,
SIZE = <number_of_2K_blocks>
[, VSTART = <virtual_address>]
DISK MIRROR Statement
Creates a software image of the SQL Server device.
DISK MIRROR
NAME = '<logical_name>',
MIRROR = '<physical_name>'
[, WRITES = {SERIAL | NOSERIAL}]
DISK REFIT Statement
Restores usage information from the system tables when a device exists
(the file is present) but the entries in the sysusages table no longer
exist. This occurs after a damaged master database is restored and the
master database is incomplete (databases and devices were added or
altered since the last backup of master).
DISK REFIT
DISK REINIT Statement
Restores the device entries to the system tables when a device exists
(the file is present) and the entry in the sysdevices table no longer
exists. This occurs after a damaged master database is restored and the
master database is incomplete (databases and devices were added or
altered since the last backup of master). This is the first step for
restoring access to user databases. The DISK REFIT statement completes
the recovery.
DISK REINIT
NAME = '<logical_name>',
PHYSNAME = '<physical_name>',
VDEVNO = <virtual_device_number>,
SIZE = <number_of_2K_blocks>
[, VSTART = <virtual_address>]
DISK REMIRROR Statement
Resumes software mirroring for the SQL Server device.
DISK REMIRROR
NAME = '<logical_name>'
DISK RESIZE Statement
Allows you to expand a device. You can use DISK RESIZE on any database
device, including the MASTER device.
DISK RESIZE
NAME = <logical_device_name>,
SIZE = <final_size>
DISK UNMIRROR Statement
Temporarily pauses software mirroring for the SQL Server device. Often
this is useful when large non-logged operations are occurring against
the database and when a database backup (using the DUMP statement) will
be performed after the non-logged operations finish.
DISK UNMIRROR
NAME = '<logical_name>'
[, SIDE = {PRIMARY | SECONDARY}]
[, MODE = {RETAIN | REMOVE}]
DROP DATABASE Statement
Removes one or more databases from SQL Server.
DROP DATABASE <database_name> [, <database_name>...]
DROP DEFAULT Statement
Removes a user-defined default from a database.
DROP DEFAULT [<owner>.]<default_name> [, [<owner>.]<default_name>...]
DROP INDEX Statement
Removes an index from a database.
DROP INDEX [owner.]<table_name>.<index_name>
[, [owner.]<table_name>.<index_name>...]
DROP PROCEDURE Statement
Removes user-created stored procedures from the current database.
DROP PROCedure [<owner>.]<procedure_name>
[, [<owner>.]<procedure_name>...]
DROP RULE Statement
Removes a user-specified rule from a database.
DROP RULE [<owner>.]<rule_name>
[, [<owner>.]<rule_name>...]
DROP TABLE Statement
Removes a table definition and all data, indexes, triggers, constraints, and
permission specifications for that table from the database.
DROP TABLE [[<database>.]<owner>.]<table_name>
[, [[<database>.]<owner>.]<table_name>...]
DROP TRIGGER Statement
Removes a trigger from a database.
DROP TRIGGER [<owner>.]<trigger_name>
[, [<owner>.]<trigger_name>...]
DROP VIEW Statement
Removes a view from a database.
DROP VIEW [<owner>.]<view_name>
[, [<owner>.]<view_name>...]
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Por Luis Walter Reynoso para Ethek & Friends