sqlite 是遵循一套独特的称为语法的规则和准则。本教程列出了所有基本的 sqlite 语法，向您提供了一个 sqlite 快速入门。@H_404_2@
大小写敏感性
有个重要的点值得注意，sqlite 是不区分大小写的，但也有一些命令是大小写敏感的，比如 GLOB 和 glob 在 sqlite 的语句中有不同的含义。@H_404_2@
注释
sqlite 注释是附加的注释，可以在 sqlite 代码中添加注释以增加其可读性，他们可以出现在任何空白处，包括在表达式内和其他 sql 语句的中间，但它们不能嵌套。@H_404_2@
sql 注释以两个连续的 “-” 字符（ASCII 0x2d）开始，并扩展至下一个换行符（ASCII 0x0a）或直到输入结束，以先到者为准。@H_404_2@
您也可以使用 C 风格的注释，以 “/” 开始，并扩展至下一个 “/” 字符对或直到输入结束，以先到者为准。sqlite的注释可以跨越多行。@H_404_2@
sqlite>.help -- This is a single line comment
sqlite 语句
所有的 sqlite 语句可以以任何关键字开始，如 SELECT、INSERT、UPDATE、DELETE、ALTER、DROP 等，所有的语句以分号（;）结束。@H_404_2@
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;
sqlite ALTER TABLE 语句：@H_404_2@
ALTER TABLE table_name ADD COLUMN column_def...;
sqlite ALTER TABLE 语句（Rename）：@H_404_2@
ALTER TABLE table_name RENAME TO new_table_name;
sqlite ATTACH DATABASE 语句：@H_404_2@
ATTACH DATABASE 'DatabaseName' As 'Alias-Name';
sqlite BEGIN TRANSACTION 语句：@H_404_2@
BEGIN;
or
BEGIN EXCLUSIVE TRANSACTION;
SELECT column1,column2....columnN FROM table_name WHERE column_name BETWEEN val-1 AND val-2;
COMMIT;
sqlite CREATE INDEX 语句：@H_404_2@
CREATE INDEX index_name ON table_name ( column_name COLLATE NOCASE );
sqlite CREATE UNIQUE INDEX 语句：@H_404_2@
CREATE UNIQUE INDEX index_name ON table_name ( column1,column2,...columnN);
sqlite CREATE TABLE 语句：@H_404_2@
CREATE TABLE table_name( column1 datatype,column2 datatype,column3 datatype,..... columnN datatype,PRIMARY KEY( one or more columns ) );
sqlite CREATE TRIGGER 语句：@H_404_2@
CREATE TRIGGER database_name.trigger_name BEFORE INSERT ON table_name FOR EACH ROW BEGIN stmt1;
stmt2;
....
END;
sqlite CREATE VIEW 语句：@H_404_2@
CREATE VIEW database_name.view_name AS SELECT statement....;
sqlite CREATE VIRTUAL TABLE 语句：@H_404_2@
CREATE VIRTUAL TABLE database_name.table_name USING weblog( access.log );
or
CREATE VIRTUAL TABLE database_name.table_name USING fts3( );
sqlite COMMIT TRANSACTION 语句：@H_404_2@
COMMIT;
SELECT COUNT(column_name) FROM table_name WHERE CONDITION;
DELETE FROM table_name WHERE {CONDITION};
sqlite DETACH DATABASE 语句：@H_404_2@
DETACH DATABASE 'Alias-Name';
SELECT DISTINCT column1,column2....columnN FROM table_name;
sqlite DROP INDEX 语句：@H_404_2@
DROP INDEX database_name.index_name;
sqlite DROP TABLE 语句：@H_404_2@
DROP TABLE database_name.table_name;
DROP INDEX database_name.view_name;
sqlite DROP TRIGGER 语句：@H_404_2@
DROP INDEX database_name.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);
sqlite INSERT INTO 语句：@H_404_2@
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-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);
sqlite RELEASE SAVEPOINT 语句：@H_404_2@
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;
