WITH FUNCTION语句概述 WITH FUNCTION 仅在 GBase 8s 的 ORACLE 模式下支持。WITH FUNCTION 语句用于临时声明并定义存储函数。WITH FUNCTION 定义的函数对象不会存储到系统表中，且只在当前 SQL 语句内有效。说法图如下：说明及限制 <WITH FUNCTION> 语句定义函数 <function_declaration> 作用域<with_select_block > ...
FUNCTION with_function(p_id IN NUMBER) RETURN NUMBER IS BEGIN RETURN p_id; END; SELECT with_function(id) FROM test WHERE rownum = 1 / WITH_FUNCTION(ID) --- 1 SQL> 有意思的是,当WITH子句中包含PL/SQL声明时,分号";"不再能用作SQL语句的终止符。如果我们使用它,SQL*Plus会等待更多命令文本...
FUNCTION with_function(p_id IN NUMBER) RETURN NUMBER IS BEGIN RETURN p_id; END; SELECT with_function(id) FROM test WHERE rownum = 1 / WITH_FUNCTION(ID) --- 1 SQL> 有意思的是,当WITH子句中包含PL/SQL声明时,分号";"不再能用作SQL语句的终止符。如果我们使用它,SQL*Plus会等待更多命令文本...
FUNCTION with_function(p_id IN NUMBER) RETURN NUMBER IS BEGIN RETURN p_id; END; SELECT with_function(id) FROM test WHERE rownum = 1 / WITH_FUNCTION(ID) --- 1 SQL> 有意思的是,当WITH子句中包含PL/SQL声明时,分号";"不再能用作SQL语句的终止符。如果我们使用它,SQL*Plus会等待更多命令文本...
To group rows into part of a datetime value withOracle SQLyou can use thetruncfunction. This rounds down datetime values. The first argument is the datetime and the second is the units to round down to. For example, this groups the rows by hour: ...
Getting Started with Oracle SQL Developer 3.0 PurposeThis tutorial introduces Oracle SQL Developer 3.0 and shows you how to manage your database objects.Time to CompleteApproximately 50 minutesOverviewOracle SQL Developer is a free graphical tool that enhances productivity and simplifies database ...
分享个sqlserver的sql给大家,能用with as的递归实现oracle中的instr函数,并且能将分隔符的字符串解析,例如: 字符串为:'O3O,30,4834,348934,AA,09WOFJOWE,FW' 解析完成: 1)实现oracle的instr函数,sql如下: WITH CTE1 AS ( SELECT '1' AS ID , 'O3O,30,4834,348934,AA,09WOFJOWE,FW' AS STR ...
[SQL]CREATE OR REPLACE FUNCTION "fn_CompareAge" (in_age1 IN VARCHAR2, in_age2 IN VARCHAR2) RETURN INTEGER AS v_mark1 INTEGER := 1; v_mark2 INTEGER := 1; v_num1 INTEGER; v_num2 INTEGER; v_result Integer := 0; BEGIN
The MIN function returns the minimum value of the expression you provide it. This is almost the same as the lowest value. Just like theMAXfunction, it’s a standard SQL function, so it works in many versions of SQL (Oracle, SQL Server, MySQL, PostgreSQL, and more) ...
MIN– This function gets the lowest of the supplied values. It’s the opposite of the MAX function. SUM– This function adds up all of the values supplied to it. COUNT– This function counts the number of values supplied. You can find a full list ofOracle SQL functions here. Other func...