convert the column values to a single line...
I have to return the column values to a single line separated by commas.If the nulls in the column just ignore without a comma.
Here is one for example. There are three values and two NULL values in the table
SQL> select ID from temp_fa;
ID
-----
1
2
3
5
6 rows selected.
I am expecting an output as 1,2,3,5
Help, please
There is always more than one title in the Oracle world ;)
You can use the TRIM, for example (same configuration as your example):
hoek&XE> create table t as select level col from dual connect by level <= 6;
Tabel is aangemaakt.
hoek&XE> update t set col = null where col in (1,3,5);
3 rijen zijn bijgewerkt.
hoek&XE> select * from t;
COL
----------
2
4
6
6 rijen zijn geselecteerd.
hoek&XE> select ltrim(sys_connect_by_path(col, ','), ',') output
2 from ( select col
3 , row_number() over (order by col) rn
4 from t
5 )
6 where connect_by_isleaf=1
7 start with rn=1
8 connect by rn = prior rn+1;
OUTPUT
-------------------------------------------------------------------------------------------------------------
2,4,6,,,
1 rij is geselecteerd.
hoek&XE> select trim ( both ',' from sys_connect_by_path(col, ',')) output
2 from ( select col
3 , row_number() over (order by col) rn
4 from t
5 )
6 where connect_by_isleaf=1
7 start with rn=1
8 connect by rn = prior rn+1;
OUTPUT
-------------------------------------------------------------------------------------------------------------
2,4,6
1 rij is geselecteerd.
Tags: Database
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