Dynamic select statement and row fetch

  
SQL>
SQL> CREATE TABLE MyTable(MyRow INTEGER, MyDesc VARCHAR2(50));

Table created.

SQL>
SQL> SET ECHO ON
SQL> SET SERVEROUTPUT ON
SQL>
SQL> DECLARE
  2       v_CursorID  NUMBER;
  3       v_SelectRecords  VARCHAR2(500);
  4       v_NUMRows  INTEGER;
  5       v_MyNum INTEGER;
  6       v_MyText VARCHAR2(50);
  7
  8  BEGIN
  9       v_CursorID := DBMS_SQL.OPEN_CURSOR;
 10       v_SelectRecords := 'SELECT * from MyTable';
 11       DBMS_SQL.PARSE(v_CursorID,v_SelectRecords,DBMS_SQL.V7);
 12       DBMS_SQL.DEFINE_COLUMN(v_CursorID,1,v_MyNum);
 13       DBMS_SQL.DEFINE_COLUMN(v_CursorID,2,v_MyText,50);
 14
 15       v_NumRows := DBMS_SQL.EXECUTE(v_CursorID);
 16  LOOP
 17       IF DBMS_SQL.FETCH_ROWS(v_CursorID) = 0 THEN
 18            EXIT;
 19       END IF;
 20
 21       DBMS_SQL.COLUMN_VALUE(v_CursorId,1,v_MyNum);
 22       DBMS_SQL.COLUMN_VALUE(v_CursorId,2,v_MyText);
 23
 24       DBMS_OUTPUT.PUT_LINE(v_MyNum || ' ' || v_MyText);
 25
 26  END LOOP;
 27
 28  EXCEPTION
 29       WHEN OTHERS THEN
 30                 RAISE;
 31       DBMS_SQL.CLOSE_CURSOR(v_CursorID);
 32  END;
 33  /

PL/SQL procedure successfully completed.

SQL>
SQL>
SQL> drop table mytable;

Table dropped.

SQL> --

Related examples in the same category

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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.	Use dbms_sql.parse to bind a select statement to a cursor
7.	Call dbms_sql.describe_columns2 to get info for a column
8.	Non-Query DML and DDL Statements
9.	Use DBMS_SQL with the RETURNING clause.
10.	DBMS_SQL.NATIVE;
11.	DBMS_SQL.PARSE and DBMS_SQL.EXECUTE
12.	Dynamic sql statement with variable binding
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

Dynamic select statement and row fetch : dbms_sql « System Packages « Oracle PL / SQL

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