user-defined types
Hi all
I have a function that returns a type defined by the user in my sql environment. The type consists of 5 different columns. I pass a ref_id to my function, on the basis of which he does some calculations and returns me the type.
create or replace type my_type
(
number of col1,
col2 varchar2 (100),
COL3 varchar2 (10),
number of COL4,
number of col5
)
create or replace function fun (number in_id) return my_type
as
Start
-code1
-code2
Return (my_type)
end;
In my sql environment, I have a table which is the following structure
create table tab1
(
number of emeline
upgvc varchar2 (100),
number of Ref_ID, - this ref_id when it is passed to the function above will return a populated user-defined type values.
number of col1,
col2 varchar2 (100),
COL3 varchar2 (10),
number of COL4,
number of col5
)
I have a table tab2, using which i will be filling of the columns of the table tab1, tab2 table structure is as below
create table tab2
(
number of emeline
upgvc varchar2 (100),
number of Ref_ID)
now I have to fill each column in table tab1, tab2 table and my pleasure to feature.
something like
Insert into tab1
Select emeline,
upgvc,
Ref_ID,
Rest of the values must be completed by calling the function using the ref_id and fill in the values. What would be the best way to do it? I have millions of records with it. I tried to use this with the function of REGAL and tried fill lines, but its slow. All of the suggestions.
Note: apologies for not sticking scripts and the original code since it will take days
Thank you
Rahul
PetervdZwan wrote:
Hello
I agree that you shouldn't calc function for each attribute. But you don't need an extra table for this type.
See below:
Not sure what you mean:
SQL > set serveroutput on
SQL > select a.deptno,.
2 a.f.col1 col1,
a.f.col2 3 col2,
4 a.f.col3 col3,
5 a.f.col4 col4,
6 a.f.col5 col5
7 of)
8. Select wagneur, f1 (deptno) f
scott.dept 9 d
10 ) a
11.
DEPTNO COL1 COL2 COL3 COL4 COL5
---------- ---------- ---------- ---------- ---------- ----------
10 10 A B 2 3
20 20 A B 2 3
30 30 A B 2 3
40 40 A B 2 3
Call to F1
Call to F1
Call to F1
Call to F1
Call to F1
Call to F1
Call to F1
Call to F1
Call to F1
Call to F1
Call to F1
Call to F1
Call to F1
Call to F1
Call to F1
Call to F1
Call to F1
Call to F1
Call to F1
Call to F1
SQL >
As you can see, function runs again 5 times by each line. You need to materialize in line of sight. It can be done using NO_MERGE:
SQL > select a.deptno,.
2 a.f.col1 col1,
a.f.col2 3 col2,
4 a.f.col3 col3,
5 a.f.col4 col4,
6 a.f.col5 col5
7 of)
8 select / * + no_merge * /.
wagneur, f1 (deptno) 9 f
scott.dept 10 d
11 ) a
12.
DEPTNO COL1 COL2 COL3 COL4 COL5
---------- ---------- ---------- ---------- ---------- ----------
10 10 A B 2 3
20 20 A B 2 3
30 30 A B 2 3
40 40 A B 2 3
Call to F1
Call to F1
Call to F1
Call to F1
Call to F1
Call to F1
SQL >
However, I have and I know not why, the function is called not 4 but 6 times, using the type of collection (as in my first response) causes function calls only 4 - one per each line.
SY.
Tags: Database
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>
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usergG_user wrote:
the req's, want to build a script dynamically using data dictionary
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is there a substitute for the exe instsrv and srvany in Vista?
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