SQLite

修改表名：ALTER TABLE orig_table_name RENAME TO tmp_table_name;合并2个数据库的表：1、先连接数据库AATTACH "c:\database_b\places.sqlite" AS SecondaryDB;   （若还要attach其它数据库，则 ATTACH "c:\database_b\third.sqlite" AS ThirdDB;）3、(若要将B中的某个表的数据追加到A中的某个表中，则： INSERT OR IGNORE INTO

Getting started with SQLite in C #http://blog.tigrangasparian.com/2012/02/09/getting-started-with-sqlite-in-c-part-one/Introduction to the operation of C # and SQLite downloadHttp://www.cnblogs.com/hanhualangzi/archive/2012/02/03/2337584.html can

-(void) viewdidload {[Super viewdidload]; CREATE TABLE [self creattable]; Insert data [self inserttable];} -----------------------Create a table---------------------(void) creattable{//1. Create a Database object sqlite3 *sqlite3 = nil; 2.

Function Description AVG (x) The function returns the average of the same set of internal reference numbers. For string and BLOB type field values that cannot be converted to numeric values, such as ' HELLO ', SQLite treats

The Android platform provides us with a database helper class to create or open a database, which inherits from the Sqliteopenhelper class, in which the constructor of the class invokes a method in the context to create and open a database object of

In the process of learning SQLite, it was found that the DLL is 32-bit and 64-bit, initially felt very annoyed, but carefully looked under,It is not a very troublesome thing to find the program to choose the DLL itself, as follows:1> Creating a

Do a C # friend of a Get dataset function, not familiar with C #, collation, understand how to useWhen mounting a table, use public static DataSet Query (string SQLString) { using (sqliteconnection connection = new

Today in the SQL Server into SQLite database, encountered a lot of problems, searched the internet for a long time, did not find the right software to convert SQL Server to SQLite, which used the Sqlitedev software, in the process of conversion, If

SQLite data is very convenient when doing the program. Steps to export to SQLite with MySQL data: (transition with CSV file)-------------------------------pilot out to the CSV file-------------------------1. Use navicat software to export MySQL data

A conditional judgmentIn SQL, the conditional judgment uses where, which is equivalent to the IF in the language, basic usage such as:SELECT column1, Column2, columnn from Table_namewhere [condition]In addition, SQL supports mathematical operations,

------------------------------------------------------------------------Recommended:-VS2012 using the 1.0.84 version of the library-VS2013 using the 1.0.93 version of the library------------------------------------------------------------------------

Before doing so much not just for the data to get a few tables, then see how to create a new table.A new tableThe basic syntax is as follows:CREATE TABLE database_name.table_name ( column1 datatype PRIMARY KEY (one or more columns), column2

What is SQLiteSQLite is a very lightweight relational database system that supports most SQL92 standards. SQLite does not need to install settings before use, no process to start, stop or configure, and most of the other SQL database engine as a

On the internet for a long time about the QT access to SQLite database encapsulation class, but did not find a good access to call class, wrote a out, here to share, I hope to help you, little brother, write code not much experience, if there is

1, the use of SQLite database, you need to first add libsqlite3.dylib on the system framework, as follows2. Open the DatabaseAdd the-DB member variable to the header file:{Sqlite3 * _DB; DB represents the entire database and is a DB instance}///1,

　　In the recent project used in SQLite, the previous project used a combination of Pdf.net+mysql, has written a lot of code, if you can write good code directly on the SQLite on the good, PDF. NET supports most of the mainstream databases, this of

After compiling is of course use SQLite, trade rushed to test to create a database, insert data, only a few data, found, really good database, and later the amount of data increased to 10000 when, found, how so slow, then I can not stand, online a

A table in the corresponding database[Table (Name = "Main. Student ")]public class Student{[Column (Name = "Stuname", DbType = "varchar (50)")]public string Stuname {get; set;}[Column (Name = "Stuno", DbType = "varchar ()", IsPrimaryKey =

In order to facilitate the test, I copied the official C:\Users\Public\Documents\Embarcadero\Studio\14.0\Samples\data\FDDemo.sdb for a copy toC:\Temp\FDDemo.sdb.{Create a new VCL Forms application, and then add the following controls (it is

ide:vs2005Language: C #Component: sqlite-netfx20-setup-bundle-x86-2005-1.0.92.0Brief introduction:This example uses the password and foreign key features of SQLite. and close temporary files (journal mode=off).Demonstrate the practicality of C #