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) LOOP NULL; END LOOP; END; / FUNCTION with_function(p_id IN NUMBER) RETURN NUMBER IS * ERROR at line 3: ORA-06550: line 3, column 30: PL/SQL: ...
查oracle文档中的语法，找了半天没找到，只有摸石头过河，发现这能这样才能成功：With FUNCTION with_function(p_id IN NUMBER) RETURN NUMBER IS BEGIN RETURN p_id;END;x1 as (select sysdate f1 from dual),x2 as (select sysdate f2 from dual)SELECT with_function(100), f1,f2 FROM du...
A serverless compute service that allows you to create, run, and scale event-driven applications without managing any infrastructure, paying only for compute time used during function execution. Container Registry A registry service to securely store, manage, and share container images with a familiar...
constoracledb=require('oracledb');asyncfunctionrun(){letconnection=awaitoracledb.getConnection({user:"[Username]",password:"[Password]",connectString:"localhost:1521/FREEPDB1"// [hostname]:[port]/[DB service name]});letresult=awaitconnection.execute("SELECT 'Hello World!' FROM dual");console...
Examples of the SUBSTR Function Similar Functions Purpose of the Oracle SUBSTR Function This Oracle SUBSTR function allows you toextract a smaller string from within a larger string. The smaller string is called the substring, which is where the name of the SUBSTR function comes from (SUBSTRing)...
SQL> create or replace function 2 remove_constants(p_query in varchar2) return varchar2 3 as 4 l_query long; 5 l_char varchar2(1); 6 l_in_quotes boolean default FLASE; 7 begin 8 for i in 1..length(p_query) 9 loop 10 l_char :=substr(p_query,i,1); 11 if(l_char='''...
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 IF "INSTR"(in_age1, 'D') > 0 THEN ...
This chapter is designed to get you up and running quickly on Oracle JDeveloper. Find information about working with the general development environment, source files, connections, using the online help, and common development tools.