How to insert into oracle custom object from select result?

@lottie 

To insert data from a SELECT statement into a custom object in Oracle, follow these steps:

1. Create a custom object type in Oracle using the CREATE TYPE statement. For example, you can create a custom object type called "my_custom_object" with fields such as "id", "name", and "value":

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CREATE TYPE my_custom_object AS OBJECT (
    id NUMBER,
    name VARCHAR2(50),
    value NUMBER
);

1. Use the SELECT statement to retrieve data from your database table and cast it into your custom object type. For example, if you have a table called "my_table" with columns "id", "name", and "value", you can select data from this table and cast it into your custom object type like this:

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SELECT my_custom_object(id, name, value) 
FROM my_table;

1. You can then insert the result of this SELECT query into a custom object table. First, create a table that stores your custom object type:

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CREATE TABLE my_custom_object_table (
    obj my_custom_object
);

1. Finally, insert the result of your SELECT query into the custom object table using the INSERT INTO statement:

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INSERT INTO my_custom_object_table 
SELECT my_custom_object(id, name, value) 
FROM my_table;

This will insert the data retrieved from the SELECT query into the custom object table as custom object instances.