Complete with matching null values

Hi all
Take into consideration the following:

create table X_T2
(
  COL1 VARCHAR2(2),
  COL2 VARCHAR2(2)
)

insert into x_t2 (COL1, COL2)
values ('1', 'A');

insert into x_t2 (COL1, COL2)
values ('2', '');

insert into x_t2 (COL1, COL2)
values ('3', '');

insert into x_t2 (COL1, COL2)
values ('4', '');

insert into x_t2 (COL1, COL2)
values ('5', '');

insert into x_t2 (COL1, COL2)
values ('6', '');

insert into x_t2 (COL1, COL2)
values ('7', 'B');

insert into x_t2 (COL1, COL2)
values ('8', '');

insert into x_t2 (COL1, COL2)
values ('9', '');

insert into x_t2 (COL1, COL2)
values ('10', '');

insert into x_t2 (COL1, COL2)
values ('11', '');

insert into x_t2 (COL1, COL2)
values ('12', 'C');

insert into x_t2 (COL1, COL2)
values ('13', '');

insert into x_t2 (COL1, COL2)
values ('14', '');

insert into x_t2 (COL1, COL2)
values ('15', '');

insert into x_t2 (COL1, COL2)
values ('16', '');

insert into x_t2 (COL1, COL2)
values ('17', 'D');

insert into x_t2 (COL1, COL2)
values ('18', '');

insert into x_t2 (COL1, COL2)
values ('19', '');

insert into x_t2 (COL1, COL2)
values ('20', '');

Required result:

Any ideas?

Oracle 11g

Thanks in advance,
Alexander.

Hello, Alexander.

Here's one way:

SELECT    col1
,       LAST_VALUE (col2 IGNORE NULLS)
           OVER (ORDER BY  LPAD (col1, 2))     AS c2
FROM       x_t2
ORDER BY  LPAD (col1, 2)
;

a.Stoyanov wrote: Hi all,.
Take into consideration the following:
create table X_T2
(
COL1 VARCHAR2(2),
COL2 VARCHAR2(2)
)
insert into x_t2 (COL1, COL2)
values ('1', 'A');
...

If you want to '2' and '3' in front of '10' and 11', then you might consider col1, a NUMBER, rather than a VARCHAR2, or add a constraint (and possibly a trigger) to make sure he always has 2 characters.

Please include the information and sample version; It's very useful!
You didn't say if you have Oracle 11.1 or 11.2. From 11.2, there is another way to specify IGNORE NULLS; but as noted above will work in both versions (or any version starting with Oracle 10.1).

Tags: Database

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----------------------------------------------------------------------------------------------
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oradba11 wrote:

Hello

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Network, FL, there is no value is non-null then I should NOT delete this line.

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Or how I can delete rows with nulls for this combination.

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VOICE CAL NULL
NETWORK NULL FL

Thank you

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