SELECT PC_COMP_CODE,
\'R\',
PC_RESUB_REF,
DECODE(PC_SL_LDGR_CODE, \'02\', \'DR\', \'CR\'),
PC_DEPT_NO DEPT,
\'\', --PC_DEPT_NO,
Create a function in SQL Server as below and replace the DECODE
with dbo.DECODE
CREATE FUNCTION DECODE(@CondField as nvarchar(100),@Criteria as nvarchar(100),
@True Value as nvarchar(100), @FalseValue as nvarchar(100))
returns nvarchar(100)
begin
return case when @CondField = @Criteria then @TrueValue
else @FalseValue end
end
It's easy to do:
select
CASE WHEN 10 > 1 THEN 'Yes'
ELSE 'No'
END
when I use the function
select dbo.decode(10>1 ,'yes' ,'no')
then say syntax error near '>'
Unfortunately, that does not get you around having the CASE clause in the SQL, since you would need it to convert the logical expression to a bit parameter to match the type of the first function argument:
create function decode(@var1 as bit, @var2 as nvarchar(100), @var3 as nvarchar(100))
returns nvarchar(100)
begin
return case when @var1 = 1 then @var2 else @var3 end;
end;
select dbo.decode(case when 10 > 1 then 1 else 0 end, 'Yes', 'No');
Just for completeness (because nobody else posted the most obvious answer):
Oracle:
DECODE(PC_SL_LDGR_CODE, '02', 'DR', 'CR')
MSSQL (2012+):
IIF(PC_SL_LDGR_CODE='02', 'DR', 'CR')
The bad news:
DECODE
with more than 4 arguments would result in an ugly IIF
cascade
join this "literal table",
select
t.c.value('@c', 'varchar(30)') code,
t.c.value('@v', 'varchar(30)') val
from (select convert(xml, '<x c="CODE001" v="Value One" /><x c="CODE002" v="Value Two" />') aXmlCol) z
cross apply aXmlCol.nodes('/x') t(c)
You could use the 'CASE .. WHEN .. THEN .. ELSE .. END' syntax in SQL.