PL/SQL CLOB

The Oracle PL/SQL CLOB or Character Large Object data type is used to store character-based data in a database. This data type is often used to store text, json or xml documents.

Syntax

The syntax for creating a CLOB column is as follows:

CREATE TABLE table_name (
column_name CLOB
);

Example

An example of using a CLOB data type is as follows:

CREATE TABLE clob_table (
id NUMBER,
myclob CLOB
);

INSERT INTO mytable (id, myclob) 
values (1, 'This is some XML');

You can also insert varchar2 values into a clob column. The syntax for this is as follows:

INSERT INTO mytable (id, myclob) 
values (2, to_clob('This is some text'));

The to_clob function will convert a varchar2 value into a clob. This can be useful if you need to store text, json or xml data in a database.