forrecin(selectcol_1, col_2fromtable_a) loop /*Statements, use rec.col_1 and rec.col_2 */ endloop; forrecincursor_name loop /*Statements, use rec.col_1 and rec.col_2 */ endloop; forrecincursor_name(cursor_param_1, cursor_param_2...) loop /*Statements, use rec.col_1 and r...
In PL/SQL we use Loops to repeat execution of a particular statement. In this tutorial we will learn about Basic Loop, While Loop and For loop in PL/SQL along with nested loops.
PL/SQL Basic LOOP In this loop structure, sequence of statements is enclosed between the LOOP and the END LOOP statements. At each iteration, the sequence of statements is executed and then control resumes at the top of the loop. 2 PL/SQL WHILE LOOP Repeats a statement or group of sta...
SQL> @rdbms\admin\utlxplan.sql; SQL> create public synonym plan_table for plan_table;--建立同义词 SQL> grant all on plan_table to public;--授权所有用户 要在数据库中建立一个角色plustrace,用sys用户运行脚本plustrce.sql来创建这个角色,这个脚本在目录(sqlplus\admin)中; SQL> @sqlplus\admin\plust...
Loops with PL/SQL Types of loops Basic loop loop /* statements */ end loop; While loop while a > b loop /* statements */ end loop See also Iterating over collection variables. For loop for i in 1..1000 loop insert into a values(i,i*2); ...
PL/SQL allows using one loop inside another loop. Following section shows a few examples to illustrate the concept.The syntax for a nested basic LOOP statement in PL/SQL is as follows −LOOP Sequence of statements1 LOOP Sequence of statements2 END LOOP; END LOOP; The syntax for a nested...
Loops with PL/SQL Types of loops Basic loop loop /* statements */ end loop; While loop while a > b loop /* statements */ end loop See also Iterating over collection variables. For loop for i in 1..1000 loop insert into a values(i,i*2); ...
PL/SQL - 循环 在本章中,我们将讨论 PL/SQL 中的循环。 可能存在需要多次执行一段代码的情况。 一般来说,语句是按顺序执行的:函数中的第一条语句首先执行,然后是第二条,依此类推。 编程语言提供了各种控制结构,允许更复杂的执行路径。 循环语句允许我们多次执行一条语句或一组语句,以下是大多数编程语言中...
PL/SQL 允许在另一个循环中使用一个循环。以下部分显示了一些示例来说明这个概念。 PL/SQL 中嵌套基本 LOOP 语句的语法如下: LOOP Sequence of statements1 LOOP Sequence of statements2 END LOOP; END LOOP; 复制 PL/SQL 中嵌套 FOR LOOP 语句的语法如下: FOR counter1 IN initial_value1 .. final_...
Oracle loops - endless looping, While loop, Repeat-until loop and For loop, Explain uses of endless looping in PL/SQL with an example - End less looping has no bounds and the program continues to operate endlessly until EXIT WHEN condition evaluates to T