Zhu JinchanSource: http://blog.csdn.net/clever101The Sqlite3_open function is required to open a SQLite database, but the first parameter of the Sqlite3_open function is the absolute path to the database file.It is fastidious and must be a UTF8
Over the past few days, I have discussed the popularity of ORM performance, and it is even a bit of gunpowder. It is said that our ORM is good and the performance is high. Of course, the best thing we use is the best. We also want to do better
SQLite is a lightweight database system similar to access, but it is smaller, faster, with larger capacity and higher concurrency.
Why is SQLite most suitable for CMS? It doesn't mean that other databases are not good. Oracle, MySQL, and sqlserver
SQLite administrator was used in the past, and the keyboard support was too bad. I also found that it has a bug that will display columns not the primary key as the primary key. the author has not updated the source code for a long time, and cannot
I recently studied embedded databases with two main representatives: SQLite and Firebird (embed ). Is ibexpert.
Both databases provide. NET data.ProgramIt is undoubtedly good news for us who are engaged in. net.
So how to use it in. Net?
first, let's talk about the concept of SQLite:
SQLite is an open-source embedded relational database, which can reduce the overhead of the application Program to manage data, SQLite is portable, easy to use, small, efficient, and reliable.
-- Returns the UTC time.Select current_timestamp;-- Returns the local time.Select datetime (current_timestamp, 'localtime ');-- Time conversion: yyyy-mm-dd, for example, 2008-08-09Select datetime ('2014-12-22 ') as [my time];Select datetime ('2014-
First, SQLite:
1. Command Line annotator --
2. Paging QuerySelect * from messages limit 10,100;This indicates that 10 rows are skipped and the returned results of 100 rows are taken.
3. Set the default Field ValueCreate Table T2 (ID integer default 0
I. How to install sqlite3 in Linux:
1. Tar-xvzf sqlite3....tar.gz
2. CD sqlite3 ..
3../configure-Disable-TCL -- prefix =/usr/local/sqlite3
4. Make; make install
Ii. Basic addition, deletion, modification, and query operations
Insert: insert into
SQLite ADO. Net:
Http://system.data.sqlite.org/index.html/doc/trunk/www/downloads.wiki
1. Use Add references to reference system. Data. SQLite. dll in the bin directory of the SQLite ADO. net installation directory.
2. Create a database file:
Some bugs are being modified recently. If you think of them, you can sort out common errors so that you can quickly find out the cause of the error more quickly next time and provide solutions for those who encounter the same problem. I will
Prototype:
Long Android. database. SQLite. sqlitedatabase. insert (string table, string nullcolumnhack, contentvalues values)
Parameter introduction:
Table: Name of the table to insert data
Nullcolumnhack: When the values parameter is null or
As a complete application, data storage operations are essential. Therefore, the android system provides four data storage methods. They are sharepreference, SQLite, content provider, and file. In Android, data is basically private and stored in the
Expand C API
The basic method for implementing functions, aggregation, and sorting is to use the callback function, register it in the program, and then use it in SQL.
Functions and aggregate use the same registration function and similar callback
Disclaimer: The book "Secrets of Android Application Development", which records the logs of the book, references the relevant code and summary, and has no commercial use, it is completely a record of self-learning, and many problems will
Document directory
Time string)
SQLite supports the following five date and time functions:
Date (Timestring, modifier, modifier ,...)
Time (Timestring, modifier, modifier ,...)
Datetime (Timestring, modifier, modifier ,...)
Julianday
Address: http://blog.csdn.net/arcgis_mobile/article/details/7597519
References
This article is a brief WP7 database connection (SQLite database) operation process, illustrated in Chinese, adapted to a variety of people, O (∩) O ~...
Preparation:
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