How to fill column with 3 case formula in MSSQL

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I want create a table on MSSQL that have 3 case; true, false, null. How can create
Formula of "Computed Column Specification" area?
Thanks.

CREATE TABLE [dbo].[Table_2](
	[Order] [int] IDENTITY(1,1) NOT NULL,
	[thickCase] [bit] NULL,
	[thick_Case]  AS (case [thickCase] when NULL then 'Fixed' else case [thickCase] when (1) then 'Up' else 'Down' end end),
 CONSTRAINT [PK_Table_2] PRIMARY KEY CLUSTERED 
(
	[Order] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON, OPTIMIZE_FOR_SEQUENTIAL_KEY = OFF) ON [PRIMARY]
) ON [PRIMARY]
GO

What I have tried:

[thick_Case]  AS (case [thickCase] when NULL then 'Fixed' else case [thickCase] when (1) then 'Up' else 'Down' end end)

Posted 18-Mar-21 12:06pm

gacar

Updated 18-Mar-21 21:46pm

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Maciej Los · Accepted Answer · 2021-03-18T21:46:00

Solution 1

Try:

SQL

[thick_Case] AS
    (
      CASE
        WHEN COALESCE([thickCase], -1) = 1 THEN 'Up'
        WHEN COALESCE([thickCase], -1) = 0 THEN 'Down'
        ELSE 'Fixed'
      END
    ),

See: SQL Server 2019 | db<>fiddle[^]

Posted 18-Mar-21 21:46pm

Maciej Los

v2

Comments

gacar 19-Mar-21 7:29am

Worked! Many thanks.

Maciej Los 19-Mar-21 8:40am

You're very welcome ;)