Create an oracle Table Function

Source: Internet
Author: User
Create a Pipelined table function in oracle. I am tired of it. Remember it and save the trouble.
1. Create a type first:
Create or replace type smpl_metadata AS OBJECT
Smpl varchar2 (2000 ),
Lauren varchar2 (2000 ),
Grade varchar2 (2000)

2. Create a "Table type" with the new type ":
Create or replace type smpl_metadata_table as table of smpl_metadata

3. Then you can use this "Table type" to create a "table function:
Create or replace function query_smpl_metadata
RETURN smpl_metadata_table PIPELINED
V_smpl_metadata smpl_metadata;
FOR v_count IN 1 .. 20
V_smpl_metadata: = smpl_metadata ('s '| v_count, 'A',' B ');
Pipe row (v_smpl_metadata );
End loop;
END query_smpl_metadata;

4. A more complex one with parameters:
Create or replace function query_smpl_metadata_detail (smpl_match varchar2)
RETURN smpl_metadata_table PIPELINED
V_smpl_metadata smpl_metadata;
For x in
Select * from
Select 'A' smpl, 'B' lauren, 'C' grade from dual
Where smpl = smpl_match
V_smpl_metadata: = smpl_metadata (x. smpl, x. lauren, x. grade );
Pipe row (v_smpl_metadata );
End loop;
END query_smpl_metadata_detail;

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