Procedure to convert from long to clob

Question

please need to procedure migrate data from long to clob,with variables
V_SRC_TABLE (LONG) to V_TRAGT_TABLE (CLOB)
SOURCE AND TARGET TABLE HAVE TWO COLUMNS
SOURCE_TABLE
VARACHAR2
LONG
TARGET_TABLE
VARACHAR2
CLOB

Answer 1

Hi,
assuming you want to convert data always from source_table to target_table knowing the column names, let's say:
SQL> CREATE TABLE source_table(col1 VARCHAR2(10), col2 LONG);
Table created.
SQL> CREATE TABLE target_table(col1 VARCHAR2(10), col2 CLOB);
Table created.You can just copy the data using SQL:
INSERT INTO target_table SELECT col1, TO_LOB(col2) FROM source_table;Or, as a procedure:
CREATE OR REPLACE PROCEDURE migrate_to_clob IS
BEGIN
  EXECUTE IMMEDIATE 'INSERT INTO target_table SELECT col1, TO_LOB(col2) FROM source_table';
END;Hope it helps.