SQL> declare 2 TYPE row_num_type IS TABLE OF NUMBER INDEX BY PLS_INTEGER; TYPE row_text_type IS TABLE OF VARCHAR2(11) INDEX BY PLS_INTEGER; row_num_tab row_num_type; row_text_tab row_text_type;beginFOR i IN 1 .. 10 LOOP row_num_tab(i) := i; row_text_tab(i) := 'row...
CALL test_mysql_while_loop(); 执行上面查询语句,得到以下结果 mysql> CALL test_mysql_while_loop(); +---+ | str | +---+ | 1,2,3,4,5, | +---+ 1 row in set Query OK, 0 rows affected 1. 2. 3. 4. 5. 6. 7. 8. 9. REPEAT循环 REPEAT循环语句的语法如下: REPEAT statements...
mysql>CALLtest_mysql_while_loop();+---+|str|+---+|1,2,3,4,5,|+---+1rowinsetQuery OK,0rowsaffected AI代码助手复制代码 完事再来看REPEAT循环语句的语法结构: REPEAT statements; UNTIL expression END REPEAT AI代码助手复制代码 上述sql首先被mysql执行,完事mysql会评估求值表达式(expression),如果表...
Query OK, 0 rows affected (0.00 sec) 从上面这个例子可以看出,使用LOOP编写同样的循环控制语句要比使用while和repeat编写的要复杂一些:在循环内部加入了IF……END IF语句,在IF语句中又加入了LEAVE语句,LEAVE语句的意思是离开循环,LEAVE的格式是:LEAVE 循环标号。 编写完存储过程程序后,来执行并查看一下运行结果: ...
ID || '.' || CURRENT_VALUE; --拼接查询字符串 QUERY_ITEMS := QUERY_ITEMS || ',' || CURRENT_VALUE; END IF; ELSE CONDITIONS := CONDITIONS || ' = ' || ALIAS || '.' || CURRENT_VALUE || ' '; END IF; --循环值减1 SIGNS := SIGNS - 1; END LOOP; --拼接关联SQL TARGET_...
在while循环中记录数据值的方法有多种,具体取决于编程语言和应用场景。以下是一些常见的方法: 1. 使用变量:在while循环中,可以使用一个或多个变量来记录数据值。在每次循环迭代中,更新变量的值...
'||CURRENT_VALUE;ENDIF;ELSECONDITIONS :=CONDITIONS||' = '||ALIAS||'.'||CURRENT_VALUE||' ';ENDIF;--循环值减1SIGNS :=SIGNS-1;ENDLOOP;--拼接关联SQLTARGET_RESULTS :=TARGET_RESULTS||'LEFT JOIN (SELECT DISTINCT '||QUERY_ITEMS||','||TEMP.QUERY_CONTENT||' AS A'||TEMP.ID||' FROM ...
Print @DSQL END the @tempStartDate variable is not parsing correctly in the 2nd loop which is not allowing to increment the date by 10 minutes. Please let me know whats going wrong or did i miss any step. Any help would be very much appreciated. ...
Add Time in SQL HH:MM:SS to another HH:MM:SS Adding a column to a large (100 million rows) table with default constraint adding a extra column in a pivot table created uisng T-SQL Pivot Table query Adding a partition scheme to an existing table. Adding a Value to...
Sets a condition for the repeated execution of a SQL statement or statement block. The statements are executed repeatedly as long as the specified condition is true. The execution of statements in the WHILE loop can be controlled from inside the loop with the BREAK and CONTINUE keywords. Transac...