loop end

7) Loop statement--------The 1th type of----------loop ...  END LOOP; Declare n Number (3): = 1;     Begin LOOP Dbms_output.put_line (n);     N: = n+1;   EXIT when n>10; END LOOP; End ///There is a string "ABCDEFG" required when the reverse print

--------the 2nd kind of--------while ...  Loop END Loop; Declare n Number (3): = 1;      Begin while n0 loop c: = substr (str,len,1);    Dbms_output.put_line (c);  Len: = len-1; End Loop;end;Loop Statement 2nd while ... Loop END Loop;

While Loop statement:1: Grammar--While loop syntax:While (executes loop when expression is established) loopThe statement to execute;END LOOP;Where: The order of execution of the loop statement is to judge the true and false of the , if it is true,

This article introduces in detail various oracle Array Operations. If you need it, you can refer to it. This article introduces in detail various oracle Array Operations. If you need it, you can refer to it. This article introduces in detail

This article introduces in detail various oracle Array Operations. If you need it, you can refer to it. Oracle Arrays can be divided into fixed arrays and variable arrays.Fixed Array   The Code is as follows: Copy code

1, what is a cursor? ① retrieves a result set from a table from which the mechanism for interacting with each record is pointed.Operations in the ② relational database are performed on a complete rowset.The rowset returned by the SELECT statement

PL/SQL CollectionProcessing single row of data, you can use the scalar quantity;Processing single-row multi-column data, you can use PL/SQL records (%rowtype,record);Working with single-column multi-row data, you can use PL/SQL collections.The

Create table test1 (id number, name varchar2 (20 ));Create table test2 (id number, name varchar2 (20 ));Create table test3 (id number, name varchar2 (20 )); 1. No commit is displayed in t1; Create or replace procedure t1AsBeginFor I in 1 .. 10000

-- Declare the cursor; cursor cursor_name is select_statement -- For Loop cursor-- (1) define a cursor-- (2) define the cursor variable-- (3) use the cursor for a For LoopDeclare-- Type DefinitionCursor c_jobIsSelect empno, ename, job, SalFrom

An Oracle cursor is divided into a display cursor and an implicit cursor. Display cursor (Explicit Cursor): A cursor defined in a PL/SQL program, used for querying, is called a display cursor.Implicit cursors (implicit Cursor): A cursor that is

--declaring cursors; cursor cursor_name is select_statement--for Loop Cursors--(1) Defining cursors--(2) Defining cursor variables--(3) Use this cursor with a for loopDeclare--type definitionCursor C_jobIsSelect Empno,ename,job,salFrom EMPwhere job=

This document contains almost every aspect of Oracle cursor use, and all passes the test--declaring cursors; cursor cursor_name is select_statement--for Loop Cursors--(1) Defining cursors--(2) Defining cursor variables--(3) Use this cursor with a

Rewritten a hero on the Internet (which was not remembered at the beginning). Writes a stored procedure that disables or enables all constraints on an Oracle database, adding exception control so that an exception can be executed.– Call

PL/SQL Block Declare begin -- SQL statement -- SQL statement directly written (DML/TCL) -- Indirectly write execute immediate -- Select statement the into clause must be included. Select empno into eno from emp Where e-mapreduce = 7369; only one

The One   concept cursor is a memory workspace for SQL, defined by the system or user as a variable. The role of a cursor is to temporarily store blocks of data that are extracted from the database. In some cases, the data needs to be transferred

This document contains almost every aspect of Oracle cursor use, and all passes the test--declaring cursors; cursor cursor_name is select_statement--for Loop Cursors--(1) Defining cursors--(2) Defining cursor variables--(3) Use this cursor with a

A total of two cursors are described for an efficient use of cursors cursor ,sys_refcursor, bulk collect 1, cursor cursor use [SQL]View Plain copy print? / * Simple cursor cursor There is a name field in the *students table, you can

The new SQL statements SQL statement Variables variable The instruction to declare a variable in a compound statement is declare. (1) Example with two DECLARE statements Two examples of DECLARE statements

Oracle stored procedures, declaring variables, for loops1. Create a stored procedureCreate or Replace procedure test (var_name_1 in type,var_name_2 out type) as--Declaring variables (variable name variable type)Begin--The execution body of the

Oracle stored procedure basic syntax introduction, oracle Stored Procedure Oracle stored procedure basic syntax Stored Procedure1 create or replace procedure stored PROCEDURE name2 IS3 BEGIN4 NULL;5 END;Row 1:Create or replace procedure is an SQL