To insert multiple rows in the table use executemany() method of cursor object. Syntax: cursor_object.executemany(statement, arguments) statement: string containing the query to execute. arguments: a sequence containing values to use within insert st…

=========================== The table is as follows: Name | Project | Error 108 test Err1, Err2, Err3 109 test2 Err1 I want to create the following: Name | Project | Error 108 Test Err1 108 Test Err2 108 Test Err3 109 Test2 Err1 =====================…

INDEX BAD EXAMPLE Improving Overall Performance Inserting Multiple Rows INSTEAD OF Inserting a Single Row Inserting Retrieved Data BAD EXAMPLE INSERT INTO Customers VALUES(NULL, 'Pep E. LaPew', '100 Main Street', 'Los Angeles', 'CA', ', 'USA', NULL,…

档 ID 420787.1 White Paper Oracle Applications Multiple Organizations Access Control for Custom Code Checked for relevance on 12-JAN-2011 See Change Record This document discusses how to update the customization code that is affected by the access con…

If we have a mapped statement that returns multiple rows and we want the results in a HashMap with some property value as the key and the resulting object as the value, we can use sqlSession.selectMap() as follows: <select id=" findAllStudents&quo…

Table 12.18 Information Functions Name Description BENCHMARK() Repeatedly execute an expression CHARSET() Return the character set of the argument COERCIBILITY() Return the collation coercibility value of the string argument COLLATION() Return the co…

http://www.onjava.com/pub/a/onjava/2001/05/30/optimization.htmlComparing the performance of LinkedLists and ArrayLists (and Vectors) (Page last updated May 2001, Added 2001-06-18, Author Jack Shirazi, Publisher OnJava). Tips: ArrayList is faster than…

Creating a Content Provider In this document Designing Data Storage Designing Content URIs Implementing the ContentProvider Class Required Methods Implementing the query() method Implementing the insert() method Implementing the delete() method Imple…

commands : show sys connect sys as sysdba or connect system as sysdba logout or disc clear screen or cle screen (utlsample.sql  —> unlock scott tables.sql  —> all tables data.sql  —> add data into tables) connect scott/tiger start C:\utlsample.sq…

以下内容参考官方文档:http://dev.mysql.com/doc/refman/5.7/en/windows-start-command-line.html 解压缩zip到D:\mysql-5.7.13-winx64,建立data目录D:\mysql-5.7.13-winx64\data, 在D:\mysql-5.7.13-winx64创建配置文件my.ini,详见: [mysqld] # set basedir to your installation path basedir=D:\m…