December 23, 2015 at 12:24 pm
Lets say I have a table
CREATE TABLE [dbo].[EMR_IN](
[MEM_NBR] [varchar](50) NOT NULL,
[SERV_DT] [datetime] NOT NULL,
[ADMIT_DT] [datetime] NULL,
[DISCH_DT] [datetime] NULL,
[SNOMED] [varchar](20) NULL )
This table already has data
I want to add a constraint on the COLUMN SNOMED.
The column should accept the value "UNKNOWN" by default.
How can I alter the table ?
Thanks in advance
Question #2
What will be the syntax for making a NOT NULL field to be NULL ( You know what I mean )
December 23, 2015 at 12:35 pm
mw112009 (12/23/2015)
Lets say I have a tableCREATE TABLE [dbo].[EMR_IN](
[MEM_NBR] [varchar](50) NOT NULL,
[SERV_DT] [datetime] NOT NULL,
[ADMIT_DT] [datetime] NULL,
[DISCH_DT] [datetime] NULL,
[SNOMED] [varchar](20) NULL )
This table already has data
I want to add a constraint on the COLUMN SNOMED.
The column should accept the value "UNKNOWN" by default.
How can I alter the table ?
Thanks in advance
Question #2
What will be the syntax for making a NOT NULL field to be NULL ( You know what I mean )
What have you tried? This is really pretty simple and basic stuff here. https://msdn.microsoft.com/en-us/library/ms190273.aspx
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