In SQL Server 2016 CTP3 objects can DIE (DROP IF EXISTS)
Do you like to write following conditional DROP statements:
IF OBJECT_ID('dbo.Product, 'U') IS NOT NULL
DROP TABLE dbo.Product;
IF EXISTS (SELECT * FROM sys.triggers WHERE name = 'trProductInsert')
DROP TRIGGER trProductInsert
I don't like these, and if you also don't like them, then you might try new DROP IF EXISTS (a.k.a. DIE :) ) statements in SQL Server 2016.
From SQL Server 2016 CTP3 you can use new DIE statements instead of big IF wrappers, e.g.:
DROP TABLE IF EXISTS dbo.Product
DROP TRIGGER IF EXISTS trProductInsert
If the object does not exists, DIE will not fail and execution will continue. Currently, the following objects can DIE:
|
AGGREGATE |
PROCEDURE |
TABLE |
|
ASSEMBLY |
ROLE |
TRIGGER |
|
VIEW |
RULE |
TYPE |
|
DATABASE |
SCHEMA |
USER |
|
DEFAULT |
SECURITY POLICY |
VIEW |
|
FUNCTION |
SEQUENCE |
|
|
INDEX |
SYNONYM |
DIE is added on columns and constraints in ALTER TABLE statement
- ALTER TABLE DROP COLUMN IF EXISTS
- ALTER TABLE DROP CONSTRAINT IF EXISTS
Documentation is already published on MSDN:
DROP TABLE (Transact-SQL) , DROP PROCEDURE (Transact-SQL) , DROP TRIGGER (Transact-SQL) , ALTER TABLE (Transact-SQL) , etc.
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