SQL>INSERTINTO EMP VALUES (7934, 'MILLER', 'CLERK', 7782,TO_DATE('23-JAN-1982', 'DD-MON-YYYY'), 1300, NULL, 10); 1 row created. SQL> SQL> SQL>CREATEOR REPLACEPROCEDUREshowemps (where_in IN VARCHAR2 := NULL) 2 IS
After analyzing, plpgsql extension will finally invokepg_plan_queriesto generate the execution plan. Forselect * from orders, plpgsql invokesSPI_cursor_open_with_paramlist, ExecInterpExpr // step in plpgsql_call_handler plpgsql_exec_function exec_toplevel_block exec_stmt_block exec_stmts exec_stmt...
You can create a macro to record the following steps. You can then replay the macro later to re-create the chunk file or to modify the macro in a text editor to change the build number and any other details. To create a chunk file, follow these steps in Dexterity Utilities: On the ...
I'd suggest you break the problem down into simpler units. One issue is how to concatenate the text values into a single CLOB. I wrote a stand-alone function to do just that: create or replace function assemble_clob(p_from in number, p_to in number) return clob is v_clob clob; --...
PL/SQL Cursor Exercises: Write a block in PL/SQL to shows how are records are declared and initialized.
1. Locate the database in the left-side pane. 2. Expand theTablesitem. 3. Hover the cursor over the table you want to modify. Three icons appear on the right side of the table name. Select the rightmost icon to load the table. ...
Increase user productivity and query efficiency by including user-written PL/SQL functions in SQL expressions as described in "Calling Stored Functions from SQL Expressions". Create explicit cursors when writing a PL/SQL application. When writing precompiler programs, increasing the number of cursors ...
After the preparation or final phase is complete, query plans that are stored in the plan cache might be invalidated. The lifetime of a cursor declared on a table that is involved in an online index operation is limited by the online index phases. Update cursors are invalidated at each phas...
-row. You might have used CURSORs to perform such tow-by-row operations. However, I do not prefer to use cursors as they are slow and will impact performance. As a good practice I always try not to use cursors in my sql code. But, how to loop through table rows without a cursor?
The critical part of the referenced link is the keyset cursors ability to see changes in the data. When you open the cursor the sp_cursoropen or sp_cursorprepexec procedure is called returning a cursor handle to the ODBC client. You then use the SQLFetch API to retrieve 1 or...