sqlcursororacle

2020年12月2日 — The nice thing about the cursor FOR loop is that Oracle Database opens the cursor, declares a record by using %ROWTYPE against the cursor ...

A cursor lets you name the work area, access the information, and process the rows individually. For more information, see Querying Data with PL/SQL. Syntax.

A CURSOR expression returns a nested cursor. This form of expression is equivalent to the PL/SQL REF CURSOR and can be passed as a REF CURSOR argument ...

This section provides examples of how to fetch values from a cursor, including how to fetch the values into a record. The following example uses a cursor to ...

A cursor, either explicit or implicit, is used to handle the result set of a SELECT statement. As a programmer, you can declare an explicit cursor to manage ...

2021年9月12日 — How to use a cursor · CURSOR cursor_name IS query; OPEN cursor_name; · CREATE VIEW sales AS SELECT customer_id, · DECLARE · SELECT customer_id,

2020年4月6日 — 它被PL/SQL自动关联，也叫SQL游标，由Oracle管理，用户无法控制但可以得到它的属性信息。 3、显式游标使用步骤 1）声明/定义游标，语法： CURSOR ...

A cursor is a pointer that points to a result of a query. PL/SQL has two types of cursors: implicit cursors and explicit cursors.

A cursor is a pointer to this context area. PL/SQL controls the context area through a cursor. A cursor holds the rows (one or more) returned by a SQL statement ...

2012年2月13日 — 在Oracle 所提供的功能中，可以發現許多implicit cursor 的蹤跡，例如：PL/SQL 中的FOR…LOOP。 而這一類的cursor 是沒有辦法透過程式去控制的，而是由 ...