plsql Bulk collect Bulk data Processing
Example
local collections are not allowed in select statements. Hence the first step is to create a schema level collection. If the collection is not schema level and being used in SELECT statements then it would cause "PLS-00642: local collection types not allowed in SQL statements"
CREATE OR REPLACE TYPE table1_t IS OBJECT (
a_1 INTEGER,
a_2 VARCHAR2(10)
);
--Grant permissions on collection so that it could be used publically in database
GRANT EXECUTE ON table1_t TO PUBLIC;
CREATE OR REPLACE TYPE table1_tbl_typ IS TABLE OF table1_t;
GRANT EXECUTE ON table1_tbl_typ TO PUBLIC;
--fetching data from table into collection and then loop through the collection and print the data.
DECLARE
table1_tbl table1_tbl_typ;
BEGIN
table1_tbl := table1_tbl_typ();
SELECT table1_t(a_1,a_2)
BULK COLLECT INTO table1_tbl
FROM table1 WHERE ROWNUM<10;
FOR rec IN (SELECT a_1 FROM TABLE(table1_tbl))--table(table1_tbl) won't give error)
LOOP
dbms_output.put_line('a_1'||rec.a_1);
dbms_output.put_line('a_2'||rec.a_2);
END LOOP;
END;
/
