SQLite是一款轻型的数据库,占用资源非常低,能够支持Windows/Linux/Unix等等主流的操作系统,同时能够跟很多程序语言相结合,比如Tcl、C#、PHP、Java等,还有ODBC接口,同样比起Mysql、PostgreSQL这两款开源的世界著名数据库管理系统来讲,它的处理速度比他们都快。
SQLite 的一个重要的特性是零配置的,这意味着不需要复杂的安装或管理。
环境:Windows10
下载地址:http://www.sqlite.org/download.html
您需要下载 sqlite-tools-win32-.zip 和 sqlite-dll-win32-.zip 压缩文件。
创建文件夹C:\sqlite,并在此文件夹下解压上面两个压缩文件,将得到 sqlite3.def、sqlite3.dll 和 sqlite3.exe 文件。
添加 C:\sqlite 到 PATH 环境变量,最后在命令提示符下,使用 sqlite3 命令,将显示如下结果:
这些命令被称为 SQLite 的点命令,这些命令的不同之处在于它们不以分号( ; )结束。我们可以命令提示符下键入简单的SQLite命令。
$ sqlite3
SQLite version 3.3.6
Enter ".help" for instructions
sqlite>
ANALYZE;
or
ANALYZE database_name;
or
ANALYZE database_name.table_name;
SELECT column1, column2....columnN
FROM table_name
WHERE CONDITION-1 {AND|OR} CONDITION-2;
ALTER TABLE table_name ADD COLUMN column_def...;
SQLite ALTER TABLE 语句(Rename):
ALTER TABLE table_name RENAME TO new_table_name;
ATTACH DATABASE 'DatabaseName' As 'Alias-Name';
or
BEGIN EXCLUSIVE TRANSACTION;
SELECT column1, column2....columnN
FROM table_name
WHERE column_name BETWEEN val-1 AND val-2;
COMMIT;
CREATE INDEX index_name
ON table_name ( column_name COLLATE NOCASE );
SQLite CREATE UNIQUE INDEX 语句:
CREATE UNIQUE INDEX index_name
ON table_name ( column1, column2,...columnN);
SQLite CREATE TABLE 语句:
CREATE TABLE table_name(
column1 datatype,
column2 datatype,
column3 datatype,
.....
columnN datatype,
PRIMARY KEY( one or more columns )
);
SQLite CREATE TRIGGER 语句:
CREATE TRIGGER database_name.trigger_name
BEFORE INSERT ON table_name FOR EACH ROW
BEGIN
stmt1;
stmt2;
....
END;
SQLite CREATE VIEW 语句:
CREATE VIEW database_name.view_name AS
SELECT statement....;
SQLite CREATE VIRTUAL TABLE 语句:
CREATE VIRTUAL TABLE database_name.table_name USING weblog( access.log );
or
CREATE VIRTUAL TABLE database_name.table_name USING fts3( );
COMMIT;
SELECT COUNT(column_name)
FROM table_name
WHERE CONDITION;
DELETE FROM table_name
WHERE {CONDITION};
DETACH DATABASE 'Alias-Name';
SELECT DISTINCT column1, column2....columnN
FROM table_name;
DROP INDEX database_name.index_name;
SQLite DROP TABLE 语句:
DROP TABLE database_name.table_name;
SQLite DROP VIEW 语句:
DROP VIEW view_name;
SQLite DROP TRIGGER 语句:
DROP TRIGGER trigger_name
SELECT column1, column2....columnN
FROM table_name
WHERE column_name EXISTS (SELECT * FROM table_name );
EXPLAIN INSERT statement...;
or
EXPLAIN QUERY PLAN SELECT statement...;
SELECT column1, column2....columnN
FROM table_name
WHERE column_name GLOB { PATTERN };
SELECT SUM(column_name)
FROM table_name
WHERE CONDITION
GROUP BY column_name;
SELECT SUM(column_name)
FROM table_name
WHERE CONDITION
GROUP BY column_name
HAVING (arithematic function condition);
INSERT INTO table_name( column1, column2....columnN)
VALUES ( value1, value2....valueN);
SELECT column1, column2....columnN
FROM table_name
WHERE column_name IN (val-1, val-2,...val-N);
SELECT column1, column2....columnN
FROM table_name
WHERE column_name LIKE { PATTERN };
SELECT column1, column2....columnN
FROM table_name
WHERE column_name NOT IN (val-1, val-2,...val-N);
SELECT column1, column2....columnN
FROM table_name
WHERE CONDITION
ORDER BY column_name {ASC|DESC};
PRAGMA pragma_name;
For example:
PRAGMA page_size;
PRAGMA cache_size = 1024;
PRAGMA table_info(table_name);
RELEASE savepoint_name;
REINDEX collation_name;
REINDEX database_name.index_name;
REINDEX database_name.table_name;
ROLLBACK;
or
ROLLBACK TO SAVEPOINT savepoint_name;
SAVEPOINT savepoint_name;
SELECT column1, column2....columnN
FROM table_name;
UPDATE table_name
SET column1 = value1, column2 = value2....columnN=valueN
[ WHERE CONDITION ];
VACUUM;
SELECT column1, column2....columnN
FROM table_name
WHERE CONDITION;
SQLite数据库完整教程参见:http://www.runoob.com/sqlite/sqlite-tutorial.html。
SQLite的图形化管理工具SQLite Expert Professional 5.x (trial version)下载地址:http://www.sqliteexpert.com/download.html。