Use dbms_sql.parse to bind a select statement to a cursor

  
SQL>
SQL>
SQL> create table foo (
  2         a   integer,
  3         b   dec( 9, 2 ),
  4         c   character varying( 30 ),
  5         d   national char( 3 )
  6      )
  7  /

Table created.

SQL>      declare
  2        l_cursor number := dbms_sql.open_cursor;
  3        l_num dbms_sql.number_table;
  4        l_var dbms_sql.varchar2_table;
  5        l_ignore number;
  6        l_cnt number;
  7      begin
  8        dbms_sql.parse( l_cursor,'select b, c from foo',dbms_sql.native );
  9        dbms_sql.define_array( l_cursor, 1, l_num, 100, 1 );
 10        dbms_sql.define_array( l_cursor, 2, l_var, 100, 1 );
 11
 12        l_ignore := dbms_sql.execute( l_cursor );
 13        loop
 14           dbms_output.put_line( 'About to attempt a fetch of 100 rows.' );
 15           l_cnt := dbms_sql.fetch_rows( l_cursor );
 16           dbms_output.put_line( 'Fetched ' || l_cnt || ' rows.' );
 17
 18           exit when l_cnt = 0;
 19
 20           dbms_sql.column_value( l_cursor, 1, l_num );
 21           dbms_sql.column_value( l_cursor, 2, l_var );
 22
 23           for i in 1 .. l_num.count loop
 24             dbms_output.put_line( 'N = ' || l_num(i) || ' V = ' || l_var(i) );
 25           end loop;
 26
 27           exit when l_cnt < 100;
 28
 29         end loop;
 30         dbms_sql.close_cursor( l_cursor );
 31       end;
 32       /
About to attempt a fetch of 100 rows.
Fetched 0 rows.

PL/SQL procedure successfully completed.

SQL>
SQL> drop table foo;

Table dropped.

SQL> --

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2.	Pass a query statement to a stored procedure
3.	Use dbms_sql.open_cursor create a cursor
4.	Use dbms_sql.bind_variable, dbms_sql.execute to insert value to a table
5.	Use dbms_sql.bind_array to bind array to a cursor
6.	Call dbms_sql.describe_columns2 to get info for a column
7.	Non-Query DML and DDL Statements
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9.	DBMS_SQL.NATIVE;
10.	DBMS_SQL.PARSE and DBMS_SQL.EXECUTE
11.	Dynamic sql statement with variable binding
12.	Dynamic select statement and row fetch
13.	Execute PL/SQL block
14.	DBMS_SQL package: dynamic SQL
15.	Pass where clause to a stored procedure
16.	Executing Queries and use DBMS_SQL.COLUMN_VALUE to map value
17.	Executing PL/SQL Blocks and use BIND_VARIABLE to bind variable
18.	drop the supplied table using dynamic SQL.
19.	DBMS_SQL.BIND_VARIABLE_CHAR
20.	illustrate the importance of setting out_value_size.
21.	Calling a function which uses dynamic SQL from within an SQL statement.
22.	Illustrates the interaction of roles and dynamic SQL.
23.	illustrates a DDL statement which is built dynamically from the procedure parameters.
24.	Use dbms_sql to process query, cursor and value
25.	Use dbms_sql.bind_variable to bind variable
26.	dbms_sql.varchar2_table type variable

Use dbms_sql.parse to bind a select statement to a cursor : dbms_sql « System Packages « Oracle PL / SQL

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