| Oracle® Database SQL Reference 10g Release 2 (10.2) Part Number B14200-02 |
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Syntax

Purpose
TO_NCLOB converts CLOB values in a LOB column or other character strings to NCLOB values. char can be any of the datatypes CHAR, VARCHAR2, NCHAR, NVARCHAR2, CLOB, or NCLOB. Oracle Database implements this function by converting the character set of char from the database character set to the national character set.
Examples
The following example inserts some character data into an NCLOB column of the pm.print_media table by first converting the data with the TO_NCLOB function:
INSERT INTO print_media (product_id, ad_id, ad_fltextn)
VALUES (3502, 31001,
TO_NCLOB('Placeholder for new product description'));