Auto Increment Sql Query

Question

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hello,
i am working on case monitoring system in which i need to make query which will automatic generate case no. +1 to the previous case entered. Please have a look on my query

SQL

select  'A/' +right(cast(year(GETDATE()) as CHAR(4)), 2)+'/'+ + cast(max(right((CaseNo), 2) )+1 as varchar(50))as caseno from tbl_RecordRequisition

it is working fine but after case no. 100 it is not incrementing to 101.

please help

Posted 29-Jan-14 23:21pm

ankitsrist

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Karthik_Mahalingam · Answer 1 · 2014-01-29T23:33:00

Solution 2

check this, you need to increase the size in the Right Function , from 2 to 3

SQL

select  'A/' +right(cast(year(GETDATE()) as CHAR(4)), 2)+'/'+   cast(max(right((@CaseNo),  3 ) )+1 as varchar(50))as caseno

Posted 29-Jan-14 23:33pm

Karthik_Mahalingam

Comments

ankitsrist 30-Jan-14 5:37am

yes i know previously i tried 3 but it is giving this error Conversion failed when converting the varchar value '4/9' to data type int. 4 means year's last digit and 9 means case no.

Karthik_Mahalingam 30-Jan-14 5:42am

CaseNo is int or varchar ??

ankitsrist 30-Jan-14 5:53am

varchar

Karthik_Mahalingam 30-Jan-14 6:04am

cast varchar to int and then try.

ankitsrist 30-Jan-14 6:09am

yes will you please modify my query

Karthik_Mahalingam 30-Jan-14 6:48am

ok

Karthik_Mahalingam 30-Jan-14 7:28am

i tried it is working fine..

Siva Hyderabad 30-Jan-14 7:37am

5

SP HINGU · Answer 2 · 2014-01-29T23:27:00

Solution 1

because you are taking right 2 digits of CaseNo so it will take 00 and increment it to 1
try this

SQL

cast(max(right((CaseNo), 3) )+1 as varchar(50))

Posted 29-Jan-14 23:27pm

SP HINGU

Comments

ankitsrist 30-Jan-14 5:36am

yes i know but if i use 3 it gives this error, i have previously tried 3 but it is giving this error

Conversion failed when converting the varchar value '4/9' to data type int.

SP HINGU 30-Jan-14 5:41am

it works fine on ms sql.


 Declare @CaseNo As int
 Set @CaseNo= 100

select  'A/' +right(cast(year(GETDATE()) as CHAR(4)), 2)+'/'+ + cast(max(right((@CaseNo), 3) )+1 as varchar(50))as caseno

ankitsrist 30-Jan-14 6:02am

yeah it is working but when i enter sample value 100 in table then it gives error.....

TrushnaK · Answer 3 · 2014-01-29T23:39:00

Solution 3

change your right function

cast(max(right((CaseNo), 2) )+1 as varchar(50))as caseno

to

cast(max(right((CaseNo), 3) )+1 as varchar(50))as caseno

Posted 29-Jan-14 23:39pm

TrushnaK