Update a column-based
Hi all
Let us examine below in Oracle 11 g:
create table xx_test1 (line_num number, line_group_num number, type varchar2(25)); insert into XX_TEST1 values('',1, 'ITEM'); insert into XX_TEST1 values('',1, 'TAX'); insert into XX_TEST1 values('',2, 'ITEM'); insert into XX_TEST1 values('',2, 'TAX'); insert into xx_test1 values('',3, 'ITEM'); insert into xx_test1 values('',3, 'TAX');
I want the line_number update based on type and line_group_num columns column.
So necessary result:
LINE_NUM LINE_GROUP_NUM TYPE ---------- -------------- ---- 1 1 ITEM 2 2 ITEM 3 3 ITEM 4 1 TAX 5 2 TAX 6 3 TAX
That means I want the sequence to be - items in the first place, only the lines of the TAX.
Line_group_number is the column that combines the tax line to the line item.
Any ideas?
Regrads,
Stoyanov.
Hello
user11340233 wrote:
Hi all
Let us examine below in Oracle 11 g:
- create table xx_test1 (type number line_num, line_group_num, varchar2 (25));
- insert into XX_TEST1 values (", 1,"ITEM");
- insert into XX_TEST1 values (", 1,"TAX");
- insert into XX_TEST1 values (", 2,"ITEM");
- insert into XX_TEST1 values (", 2,"TAX");
- insert into xx_test1 values (", 3,"ITEM");
- insert into xx_test1 values (", 3,"TAX");
I want the line_number update based on type and line_group_num columns column.
So necessary result:
- TYPE OF LINE_GROUP_NUM LINE_NUM
- ---------- -------------- ----
- 1 1 ARTICLE
- 2 2 POINT
- 3 POINT 3
- 4 1 THE TAX
- 5 TAX 2
- 6 TAX 3
That means I want the sequence to be - items in the first place, only the lines of the TAX.
Line_group_number is the column that combines the tax line to the line item.
Any ideas?
Regrads,
Stoyanov.
You can do this by using the ROW_NUMBER function analytical in a MERGE statement. For example:
MERGE INTO dst xx_test1
WITH THE HELP OF)
SELECT line_group_num, type
ROW_NUMBER () (ORDER BY TYPE, line_group_num) AS line_num
OF xx_test1
) src
WE (dst.line_group_num = src.line_group_num
AND dst.type = src.type
)
WHEN MATCHED THEN UPDATE
SET dst.ine_num = scr.line_num
;
This assumes that the combination (type, line_group_num) is unique, and none of these columns are NULL, like your sample data.
If this isn't the case, then the above statement needs to be changed a little, but only a louis577.
Tags: Database
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WITH THE HELP OF)
WITH got_grp AS
(
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paramtype
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WHEN paramtype IS NULL
THEN 0
END
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)
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paramlocation
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ORDER BY load_order
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WE (dst.paramlocation = src.paramlocation)
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