Oracle Database need not verify thata cursor is in the cache because it cannot be deallocated while an applicationcursor associated with it is open. Settingthe value of the parameter to true saves Oracle Databas
(1)If CURSOR_SPACE_FOR_TIMEis set to false (the default), then a cursor can be deallocated from the library cache regardless ofwhether application cursors associated with its SQL statement are open.In this case, Oracle Database must verify that the cursor containing the SQLstatement is in th...
PLSQL中游标常常用于联机交易，调用存储过程所返回的结果集也常用游标去存储的。游标的定义语句比较简单，如 cursor my_cursor is select 1 from dual。openGauss中不兼容游标定义的IS关键字，需要改写为FOR。postgres=# CURSOR prd_cursor IS select name from product; ERROR: syntax error at or near "IS"LI...
这时Oracle会新生成一个Session Cursor和一对Shared Cursor(即Parent Cursor和Child Cursor),这其中的Shared Cursor会存储能被所有会话共享、重用的内容(比如目标SQL的解析树、执行计划等),而Session Cursor则会经历一次Open、Parse、Bind、Execute、Fetch和Close中的一个或多个阶段。
SQL:2003 Syntax CallableStatement cs1 = conn.prepareCall ("{call proc (?,?)}"); CallableStatement cs2 = conn.prepareCall ("{? = call func (?,?)}"); Oracle Syntax CallableStatement cs1 = conn.prepareCall ("begin proc (:1,:2); end;"); CallableStatement cs2 = conn.prepareCall ("begin ...
RELEASE_CURSOR={YES|NO} * NO カーソル・キャッシュでSQL文を処理する方法 RUNOUTLINE NO データベースにアウトラインを作成します。 SELECT_ERROR={YES|NO}* YES SELECTエラーの処理の方法 SQLCHECK={FULL|SYNTAX|LIMITED|NONE}* SYNTAX 構文および意味のチェックの程度 STMT_CACHE...
résolution automatique des fournisseurs pour OraclePKIProvider, prise en charge du service de fichier de clés (KSS) et prise en charge du proxy HTTPS Types de données : accessibilité aux tableaux associatifs PL/SQL ; Oracle REF CURSOR en tant que paramètre de liaison IN ; et validation du...
ORA-17088 Unsupported syntax for requested resultset type and concurrency level 不支持所请求的结果集类型和并发级别的语法不受支持。 ORA-17089 internal error 内部错误。 ORA-17090 operation not allowed 不允许的操作。 ORA-17091 Unable to create resultset at the requested type and/or concurrency level...
SQL> select user_name,sql_text from v$open_cursor; //需要用sys或system用户执行 三、列名别名 SQL> select ename, sal as Salary from emp; SQL> select ename 职工姓名, sal 工资 from emp; * # / / select 都不允许做别名,如果一定要用,用双引号括起来。
OPEN c1; LOOP -- Fetches 2 columns into variables FETCH c1 INTO v_lastname, v_jobid; EXIT WHEN c1%NOTFOUND; END LOOP; CLOSE c1; END; Define an implicit PL/SQL cursor using aFORLoop. The cursor runs a query and stores values returned into a record. ...