SQL WHILE Loop Syntax The syntax is like this: WHILE CONDITION BEGIN CODE BREAK --Optional CONTINUE --Optional END WHILE Loop Example In this simple example, we will create a table named emails with an id and email columns and add 100 fake ids and emails by using a WHILE loop. First, ...
davice I am not sure about DO-WHILE IN MS SQL Server 2008 but you can change your WHILE loop logic, so as to USE like DO-WHILE loop. 1) Example of WHILE Loop DECLARE@intFlagINTSET@intFlag=1WHILE (@intFlag<=5)BEGINPRINT@intFlagSET@intFlag=@intFlag+1ENDGO ResultSet: 1 2 3 4 5 2...
1) Simple PL/SQL WHILE loop example The following example illustrates how to use the WHILE loop statement: DECLARE n_counter NUMBER := 1; BEGIN WHILE n_counter <= 5 LOOP DBMS_OUTPUT.PUT_LINE( 'Counter : ' || n_counter ); n_counter := n_counter + 1; END LOOP; END; Code languag...
Example to Implement WHILE LOOP in MySQL Let us discuss some of the examples of WHILE loop MySQL statements to execute the SQL query code as follows: Let’s consider a table named Calendar_Data to store the values of the WHILE loop and execute the statements accordingly. Let us write the ...
Let's look at an example that shows how to use a WHILE LOOP in SQL Server (Transact-SQL). For example: DECLARE @site_value INT; SET @site_value = 0; WHILE @site_value <= 10 BEGIN PRINT 'Inside WHILE LOOP on TechOnTheNet.com'; SET @site_value = @site_value + 1; END; PRINT...
END LOOP; In this example, the WHILE Loop would terminate once the monthly_value exceeded 4000. 译:在该示例中,WHILE循环将会在monthly_value的值达到4000时终止。 再分享一下我老师大神的人工智能教程吧。零基础!通俗易懂!风趣幽默!还带黄段子!希望你也加入到我们人工智能的队伍中来!https://blog.csdn....
PL/pgSQL while loop example The following example uses the while loop statement to display the value of a counter: do $$ declare counter integer := 0; begin while counter < 5 loop raise notice 'Counter %', counter; counter := counter + 1; end loop; end; $$; Output: NOTICE: Counte...
FORALL语句会从PL/SQL引擎向SQL引擎批量发送INSERT、UPDATE和DELETE语句,而不是每次发送一条语句。例如,考虑下面的数值型FOR循环会10次迭代执行INSERT语句: FOR i IN 1..10 LOOP INSERT INTO table_name VALUES (...); END LOOP; 该INSERT语句会从PL/SQL引擎发送到SQL引擎10次。也就是说,会发生10次上下文其...
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-- loop DECLARE v_num VARCHAR2(100); CURSOR c_num IS SELECT NAME FROM test_t WHERE ROWNUM < 600000; BEGIN dbms_output.enable(800000); OPEN c_num; LOOP FETCH c_num INTO v_num; EXIT WHEN c_num%NOTFOUND; --未找到数据 END LOOP; CLOSE c_num; END; -- while DECLARE v_num3 VARCH...