PL/SQL also lets you declare explicit cursors. Anexplicit cursorhas a name and is associated with a query (SQLSELECTstatement)—usually one that returns multiple rows. After declaring an explicit cursor, you must open it (with theOPENstatement), fetch rows one at a time from the result set...
Consider the following example: This code shows the reason for the C++ rule: Since Base::f() is declared to throw only an int exception, function foo can catch int exceptions, and declare that it allows no exceptions to escape. Suppose someone later declared class Der5, where the ...
Performance can be improved substantially by minimizing the number of context switches required to run a particular block or subprogram. When a SQL statement runs inside a loop that uses collection elements as bind variables, the large number of context switches required by the block can cause poor...
And when you declare it, you specify its type and, optionally, an initial or default value. All declarations of these variables must be made in the declaration section of your anonymous block, procedure, function, or package. I’ve divided the best practices in this chapter into three main ...
Action: To use parameter substitution, declare a runtime parameter instead of an actual value, and precede the runtime parameter name with a question mark (?), such as EXTFILE ?EXTFILE. Then, before starting the process, use the shell of the operating system to pass the runtime values ...
Declare a cursor with variables CURSOR c1 (key NUMBER) IS SELECT * FROM employees WHERE id = key; C2 CURSOR (key integer) FOR SELECT * FROM employees WHERE id = key; Open a cursor with variables OPEN c1(2); OPEN c2(2); or OPEN c2(key := 2); ...
declare l_reqid number; l_props ess_runtime.request_prop_table_t; begin . ess_runtime.add_pp_action ( props => l_props, -- IN OUT request_prop_table_t, action_order => 1, -- order in which this post processing action will execute. action_name => 'BIPDocGen', -- Action for ...
You can also make your variables 12.2 compatible now with type anchoring:Copy code snippet Copied to Clipboard Error: Could not Copy Copied to Clipboard Error: Could not Copy declare tab user_tables.table_name%type;Whichever method you use, start preparing your code now. It may be a long ...
("declare x ref point; " + "begin insert into point_values_table p values (point(10, 20))" + " returning ref(p) into x; " + " ? := x; " + "end;"); call.registerOutParameter (1, oracle.jdbc.driver.OracleTypes.REF,"SCOTT.POINT"); call.execute (); oracle.sql.REF ref = ...
PL/SQL also lets you declare explicit cursors. Anexplicit cursorhas a name and is associated with a query (SQLSELECTstatement)—usually one that returns multiple rows. After declaring an explicit cursor, you must open it (with theOPENstatement), fetch rows one at a time from the result set...