Oracle/PLSQL FOR Loop Oracle/PLSQL: FOR Loop The syntax for the FOR Loop is: FOR loop_counter IN [REVERSE] lowest_number..highest_number LOOP {.statements.} END LOOP; You would use a FOR Loop when you want to execute the loop body a fixed number of times. 译:当你需循环体执行一定...
The syntax for the WHILE Loop is: WHILE condition LOOP {.statements.} END LOOP; You would use a WHILE Loop when you are not sure how many times you will execute the loop body. Since the WHILE condition is evaluated before entering the loop, it is possible that the loop body maynotexec...
1. PL/SQL循环语句:在PL/SQL中,LOOP语句用于实现循环操作,例如,使用FOR循环语句可以实现循环一定次数的操作。在题目1中,使用FOR循环语句来显示2到50的25个偶数。 知识点:PL/SQL循环语句、FOR循环语句 2. PL/... Oracle+PLSQL+语法手册 全面 详细 chm 2. 执行段:包含SQL语句和PLSQL控制结构,如循环(FOR, ...
The PL/SQL LOOP statement is a control structure that repeatedly executes a block of code until a specific condition is met or until you manually exit the loop. Here’s the syntax of the PL/SQL LOOP statement: <> LOOP statements; END LOOP loop_label;Code language: SQL (Structured ...
Here’s the syntax for theWHILEloop statement: WHILEconditionLOOPstatements;ENDLOOP;Code language:PostgreSQL SQL dialect and PL/pgSQL(pgsql) In this syntax, the condition is a boolean expression that evaluates toTRUE,FALSEorNULL. TheWHILEloop statement continues to execute thestatementsbetween theLOO...
Introduction to PL/pgSQL Loop statement Theloopdefines an unconditional loop that executes a block of code repeatedly until terminated by anexitorreturnstatement. The following illustrates the syntax of theloopstatement: <>loopstatements;end loop; Typically...
Introduction to PL/pgSQL while loop statement Thewhileloop statement executes one or more statements as long as a specified condition is true. Here’s the basic syntax of awhileloop statement: [ <> ]whileconditionloopstatements;endloop; In this...
Syntax This is the syntax for the exit statement used in PostgreSQL: exit [label] [when boolean_expression]; The above code contains the exit keyword and label of the loop with the condition on which the loop will be terminated. The following code block contains the exit keyword with the ...
直接在dbForge查询窗口上运行简单的SQL语句 、 's';错误: 1 You have an error in your SQL syntax; check the manual that corresponds to your MySQL 浏览0提问于2012-06-14得票数 0 回答已采纳 1回答 #1413在mysql中创建触发器时出错 、、 在phpmyadmin中使用mysql,我开始创建一个触发器。但我有个错误...
Syntax for_loop_statement::= Description of the illustration for_loop_statement.eps (statement ::=) Semantics for_loop_statement index Name for the implicitly declared integer variable that is local to theFORLOOPstatement. Statements outside the loop cannot referenceindex. Statements inside the loop...