How can an Oracle database add a field of type CLOB?

1 year ago
Emily Johnson
1 minute

To add a field of CLOB type in Oracle, you can follow these steps:

  1. To add a CLOB column when modifying an existing table or creating a new table, use the ALTER TABLE statement. For example, the following statement will add a CLOB column named “my_clob_column” to an existing table.
ALTER TABLE your_table_name ADD my_clob_column CLOB;
  1. To add a CLOB column when creating a new table, you can use the CREATE TABLE statement. For example, the following statement will create a new table named “your_table_name” and add a CLOB column named “my_clob_column”: 
CREATE TABLE your_table_name (
    id NUMBER,
    my_clob_column CLOB
);
  1. If you need to specify a size limit for a CLOB column, you can use parentheses after the CLOB keyword to specify the maximum number of characters. For example, the following statement will create a CLOB column with a maximum of 500 characters:
ALTER TABLE your_table_name ADD my_clob_column CLOB(500);

Note: CLOB columns are a field type used to store larger text data, capable of storing up to 4GB of data.

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