I have two columns SALARY_CODE
and FN_YEAR
I want to generate table like below on the basis of FN_YEAR
column: If FN_YEAR
value is 18-19
then SALARY_CODE
will be SAL/01-18-19
and next value of SALARY_CODE for 18-19
will be SAL/02-18-19
Please help me to write the SQL to perform the discussed task.
DECLARE @intCount int=0;
DECLARE @CustomID nvarchar(16);
DECLARE @fn_year nvarchar(16)='19-20';
SELECT @intCount = Count(SALARY_CODE) FROM temptest WHERE FN_YEAR=@fn_year
IF(@intCount = 0)
BEGIN
set @CustomID='SAL/1-'+ @fn_year
insert into temptest values (@CustomID,@fn_year)
END
ELSE
BEGIN
SET @CustomID= 'SAL/'+ CAST(@intCount+1 as nvarchar(16)) +'-'+@fn_year;
insert into temptest values (@CustomID,@fn_year)
END
You can write function like below:
CREATE FUNCTION dbo.getSalaryCode(@fn_year NVARCHAR(16))
RETURNS NVARCHAR(16)
AS
-- Returns the SALARY_CODE
BEGIN
DECLARE @intCount int=0;
DECLARE @CustomID nvarchar(16);
SELECT @intCount = Count(SALARY_CODE) FROM temptest WHERE FN_YEAR=@fn_year
IF(@intCount = 0)
BEGIN
SET @CustomID='SAL/1-'+ @fn_year
END
ELSE
BEGIN
SET @CustomID= 'SAL/'+ CAST(@intCount+1 as nvarchar(16)) +'-'+@fn_year;
END
RETURN @CustomID;
END;
You can use row_number()
and concatenate
with the other column to get the desired result
with data as (
(select '18-19' FN_YEAR union all
select '18-19' union all
select '18-19' union all
select '19-20' union all
select '19-20' union all
select '20-21') )
select FN_YEAR,
('SAL/'+CAST((row_number() OVER (PARTITION BY FN_YEAR order by FN_YEAR)) AS VARCHAR(50))+'-'+FN_YEAR)
as SALARY_CODE from data
Create a table (let's call it mnths) with 12 rows (assuming all months are required) and an index colum with numbers between 1 and 12, and another table for the required years. then add rows from that table for each month and year, like this:
Table name: mnths
Field name: mnt (values: 1-12)
Table name: years
Field name: yr (values: 18-30)
SELECT 'SAL/'+CAST(mnt as nvarchar(2))+'-'+
CAST(yr as nvarchar(2))+'-'+CAST(yr+1 as nvarchar(2)) as SALARY_CODE,
CAST(yr as nvarchar(2))+'-'+CAST(yr+1 as nvarchar(2)) as FN_YEAR
FROM mnths cross join years
If you already have the data, you can validate it against those tables and add missing entries.
Divya Agrawal answer is pretty good. But what i think you need is a trigger to fill those values automatically when you insert something on the table. The below procedure is a sample of how to pretty much do it. Id is your table primary key.
CREATE TRIGGER [dbo].[Salary_MyTable]
ON [dbo].[MyTable]
AFTER INSERT
AS
BEGIN
@Id
SELECT @Id = INSERTED.Id FROM INSERTED
SELECT @fn_year= INSERTED.FN_YEAR FROM INSERTED
SELECT @intCount = Count(SALARY_CODE) FROM temptest WHERE FN_YEAR=@fn_year
UPDATE [dbo].[MyTable] SET [SALARY_CODE]= 'SAL/' + CAST(@intCount+1 as nvarchar(16)) +'-'+@fn_year) WHERE @Id = Id
END
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