the dynamic PL/SQL block is an anonymous PL/SQL block that invokes a subprogram that has a formal parameter of the PL/SQL (but not SQL) data type RECORD. The record type is declared in a package specification, and the subprogram is declared in the package specification and defined in the...
parentcursor包含了SQL TEXT和相关的hash value,v$sqlarea中的每一行代表了一个parent cursor,根据address表示了其内存地址。 childcursor包含了SQL的metadata,即使得这个SQL可以执行的所有相关信息,如OBJECT和权限,优化器设置,执行计划等。v$sql中中 的每一行表示了一个child cursor,根据hash value和address与parent curso...
oracle中的shared cursor又细分为parent cursor和child cursor,我们可以通过分别查询视图vSQLAREA和v SQL来获取存储在parent cursor和child cursor中的缓存信息 其实parent cursor和child cursor结构是类似的,解析sql时候,sql文本是存储在parent cursor的缓存对象句柄的属性name中,而执行计划和解析树是存储在child cursor的...
I have a search screen where user can enter any search criterion and submit the information. The information is collected and passed to an Oracle Stored Proc. where a dynamic query is formed based on the search citerion passed. Ex if user entered emp no then the dynamic query formed would ...
1. Open cursor with a dynamic select statement SQL> SQL>CREATETABLE EMP (EMPNO NUMBER(4) NOT NULL, 2 ENAME VARCHAR2(10), 3 JOB VARCHAR2(9), 4 MGR NUMBER(4), 5 HIREDATE DATE, 6 SAL NUMBER(7, 2), 7 COMM NUMBER(7, 2), ...
2)、语法 fetch dynamic_cursor bulk collect into define_name[,define_name…]; 3)、处理多行查询语句 declare type empcurtyp is ref cursor; emp_cv empcurtyp; type ename_table_type is table of emp.ename%type index by binary_integer; ename_table ename_table_type; v_sql varchar2(100); beg...
This method lets your program accept or build a dynamic query, then process it using the PREPARE command with the DECLARE, OPEN, FETCH, and CLOSE cursor commands. The number of select-list items, the number of placeholders for input host variables, and the datatypes of the input host ...
Dbms_xplan.display_cursor 10046 trace Awrsqrpt.sql 1、PLSQL PL/SQLDeveloper,Navicat, Toad等客户端工具:很简单将 SQL 语句写出来,便可以使用 F5 查看执行计划了,不过需要注意缩进格式而且这个执行计划并不是真实计划,并没有实际执行此 SQL。这个工具更适合开发朋友们使用,这个就不用多说了。
New applications should be developed using the newer ANSI SQL Method 4 described in Chapter 10, "ANSI Dynamic SQL".The ANSI Method 4 supports all Oracle types, while the older Oracle Method 4 does not support cursor variables, tables of group items, the DML returning clause, and LOBs. ...
“项目设置”对话框的“转换”页面包含一些设置,用来自定义 SSMA 如何将 Oracle 语法转换为 SQL Server 语法。 “项目设置”和“默认项目设置”对话框中提供了“转换”窗格: 要指定用于所有 SSMA 项目的设置,请在“工具”菜单上单击“默认项目设置”,从“迁移目标版本”下拉列表中选择需要为其查看或更改设置的迁移...