such as insert, update, delete and select into statements. The values of thecursor attributes always refer to the most recently executed SQL statement.Before Oracle opens the implicit cursor, the implicit cursor attributes yieldNULL.
When Oracle Database executes a SQL statement, it stores the result set and processing information in an unnamedprivate SQL area. A pointer to this unnamed area, called acursor, lets youretrieve the rows of the result set one at a time.Cursor attributesreturn information about the state of t...
such as insert, update, delete and select into statements. The values of thecursor attributes always refer to the most recently executed SQL statement.Before Oracle opens the implicit cursor, the implicit cursor attributes yieldNULL.
When Oracle Database executes a SQL statement, it stores the result set and processing information in an unnamedprivate SQL area. A pointer to this unnamed area, called acursor, lets youretrieve the rows of the result set one at a time.Cursor attributes return information about the state of ...
Oracle里的cursor分为两种:一种是shared cursor,一种是session cursor。 1.1 Shared cursor 说明 sharedcursor就是指缓存在librarycache(SGA下的Shared Pool)里的一种library cache object,说白了就是指缓存在library cache里的sql和匿名pl/sql。 它们是Oracle缓存在librarycache中的几十种librarycache object之一,它所...
An implicit cursor has attributes that return information about the most recently runSELECTor DML statement that is not associated with a named cursor. Note: You can use cursor attributes only in procedural statements, not in SQL statements. ...
カーソル属性Cursor attributes,PolarDB:各カーソルには、% ISOPEN、% FOUND、% NOTFOUND、および % ROWCOUNTの4つの属性があります。 これらの属性は、カーソルの状態をテストするために使用されます。 このトピックでは、これらの属性とその例について説明します。
To customize the attributes of a cursor, use a CursorConfig object.CursorConfig config = new CursorConfig(); config.setDirtyRead(true); Cursor cursor = myDatabase.openCursor(txn, config); Modifications to the database during a sequential scan will be reflected in the scan; that is, ...
ColumnOrdinal" value="implicitRefCursor metadata=AttributesList" /> add要素は、REF CURSORの各列に対して定義する必要があります。たとえば、5つの列を返すREF CURSORでは、構成ファイルで5つのadd要素を定義する必要があります。 各add要素には、name属性およびvalue属性が含まれます。value属性は、...
getSearchBoth in class Cursor Parameters: key - the key used as input. It must be initialized with a non-null byte array by the caller. data - the data used as input. It must be initialized with a non-null byte array by the caller. lockMode - the locking attributes; if null, defau...