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sqlsql-serverdatabaset-sqlsql-query-store

TSQL - Updating a column value with ORDER BY till a certain column value is found


I have this table:

ID - Uniqueidentifier
TYPEDUT_ID - Uniqueidentifer
OPERATION - Integer
ACTIVE - Integer (0/1)
CREATED - DateTime

I want to sort the rows ORDER BY CREATED DESC and update ACTIVE = 0 from the top to bottom till I reach a certain OPERATION.

Sample data:

            ID                                     TYPEDUT_ID                 OPERATION        ACTIVE             CREATED
ADFFC7CB-C938-448B-BF15-019C31434AFD    CC055EBE-2655-4B2F-B6C2-BF9BCE46941B    2000             1         2016-09-06 13:06:29.333
CF7E2375-EC6E-416F-99E6-15213BD829D8    CC055EBE-2655-4B2F-B6C2-BF9BCE46941B    3000             1         2016-09-06 13:01:47.657
31189043-8B7E-4DCC-8EAC-62AD5EDB32E2    CC055EBE-2655-4B2F-B6C2-BF9BCE46941B    2000             1         2016-09-06 13:10:07.720
E473B887-65DB-40FA-94D9-697F20E787B9    CC055EBE-2655-4B2F-B6C2-BF9BCE46941B    2300             1         2016-09-06 13:30:41.227
1DD2C120-7859-4868-9C71-83F6BC3F7488    CC055EBE-2655-4B2F-B6C2-BF9BCE46941B    3100             1         2016-09-06 14:40:46.087
B27283A8-43DD-468E-95CB-99DD1BC95321    CC055EBE-2655-4B2F-B6C2-BF9BCE46941B    2100             1         2016-09-06 13:23:34.883
103899E9-33B1-4FCA-AA1B-A51040B35FBD    CC055EBE-2655-4B2F-B6C2-BF9BCE46941B    2400             1         2016-09-06 14:03:21.830

Now if I put 3000 as my desired OPERATION the expected result should look like this:

                   ID                              TYPEDUT_ID                 OPERATION  ACTIVE           CREATED
1DD2C120-7859-4868-9C71-83F6BC3F7488    CC055EBE-2655-4B2F-B6C2-BF9BCE46941B    3100       0       2016-09-06 14:40:46.087
103899E9-33B1-4FCA-AA1B-A51040B35FBD    CC055EBE-2655-4B2F-B6C2-BF9BCE46941B    2400       0       2016-09-06 14:03:21.830
E473B887-65DB-40FA-94D9-697F20E787B9    CC055EBE-2655-4B2F-B6C2-BF9BCE46941B    2300       0       2016-09-06 13:30:41.227
B27283A8-43DD-468E-95CB-99DD1BC95321    CC055EBE-2655-4B2F-B6C2-BF9BCE46941B    2100       0       2016-09-06 13:23:34.883
31189043-8B7E-4DCC-8EAC-62AD5EDB32E2    CC055EBE-2655-4B2F-B6C2-BF9BCE46941B    2000       0       2016-09-06 13:10:07.720
ADFFC7CB-C938-448B-BF15-019C31434AFD    CC055EBE-2655-4B2F-B6C2-BF9BCE46941B    2000       0       2016-09-06 13:06:29.333
CF7E2375-EC6E-416F-99E6-15213BD829D8    CC055EBE-2655-4B2F-B6C2-BF9BCE46941B    3000       1       2016-09-06 13:01:47.657

Solution

  • If I understand correctly, you can get the minimum created time for a particular operation using a subquery. You can then use that information to define the rows to be updated:

    update t
        set active = 0
        where created <= (select min(t2.created)
                          from t t2
                          where operation = @Operation
                         );
    

    EDIT:

    Apparently, I understand backwards. The solution is the other way:

    update t
        set active = 0
        where created >= (select max(t2.created)
                          from t t2
                          where operation = @Operation
                         );