find cursor

Cursor is a complex concept in the database field, because it contains shared cursor and session cursor. The two have different concepts and forms.The concept of shared cursor is easy to confuse with the cursor defined in SQL statements. This

Records the Issue that cannot be created in CursorWindow due to memory exhaustion (error-12) caused by cursor leakage on Android. [Symptom] 20:27:36-30. 751 E/CursorWindow (760): cocould not allocate CursorWindow '/data/com. android. providers.

There are two types of cursors in Oracle: an explicit cursor, an implicit cursor. A display cursor is a cursor defined with the cursor...is command that handles multiple records returned by a query statement (SELECT), while an implicit cursor is a

PL/SQL cursor usage, plsql cursor usageZookeeper Use of cursors ① Cursor ConceptTo process SQL statements, ORACLE must allocate a region called context area to process required information,This includes the number of rows to be processed, a pointer

Problems encountered at work: 1. There is a custom dictionary table: mdl_class_js This table stores the names of many other tables (called resource tables). (In the mdl_class_js table, fields: table_name are used to represent these resource

I recently handled some memory leaks in my work. In this process, I found some basic problems, instead of causing memory leaks, such as static variables, cursor shutdown, threads, timer, anti-Registration, bitmap, etc. I have made some statistics

1. IntroductionSQL is a collection-oriented language, and the result is generally a collection (with multiple records), and the PL-SQL variable is a scalar, a set of variables can only hold one record at a time. Many times the number of records for

I still prefer to use cases to explain the problem. The requirement case is described as follows: to implement a window class derived from cdialog, you must modify the shape of the mouse pointer when moving the cursor to the window client area,

Learning MongoDB 6: MongoDB query (cursor operation, cursor information) (3), mongodb cursorI. Introduction Db. collection. find () can be used to query based on conditions and specify fields returned using the projection operator to omit this

Download an English attachment: Cursor in ArcObject Chinese Translation: Cursor in ArcObject This article is an article in the first installment of ArcUser 2006, introducingThe Cursor object in Arcobjects introduces how foreigners know Cursor.. The