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SQLite语法

时间:2019-06-29 11:09:36      阅读:29      评论:0      收藏:0      [点我收藏+]

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SQLite 语法

大小写敏感性

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。

SQL 注释以两个连续的 "-" 字符(ASCII 0x2d)开始,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;

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。

SQLite ANALYZE 语句:

  • ANALYZE;
    or
    ANALYZE database_name;
    or
    ANALYZE database_name。table_name;

SQLite AND/OR 子句:

  • SELECT column1, column2。。。。columnN
    FROM   table_name
    WHERE  CONDITION-1 {AND|OR} CONDITION-2;

SQLite ALTER TABLE 语句:

  • ALTER TABLE table_name ADD COLUMN column_def...;

SQLite ALTER TABLE 语句(Rename):

  • ALTER TABLE table_name RENAME TO new_table_name;

SQLite ATTACH DATABASE 语句:

  • ATTACH DATABASE DatabaseName As Alias-Name;

SQLite BEGIN TRANSACTION 语句:

  • BEGIN;
    or
    BEGIN EXCLUSIVE TRANSACTION;

SQLite BETWEEN 子句:

  • SELECT column1, column2。。。。columnN
    FROM   table_name
    WHERE  column_name BETWEEN val-1 AND val-2;

SQLite COMMIT 语句:

  • COMMIT;

SQLite CREATE INDEX 语句:

  • 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( );

SQLite COMMIT TRANSACTION 语句:

  • COMMIT;

SQLite COUNT 子句:

  • SELECT COUNT(column_name)
    FROM   table_name
    WHERE  CONDITION;

SQLite DELETE 语句:

  • DELETE FROM table_name
    WHERE  {CONDITION};

SQLite DETACH DATABASE 语句:

  • DETACH DATABASE Alias-Name;

SQLite DISTINCT 子句:

  • SELECT DISTINCT column1, column2。。。。columnN
    FROM   table_name;

SQLite DROP INDEX 语句:

  • 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

SQLite EXISTS 子句:

  • SELECT column1, column2....columnN
    FROM   table_name
    WHERE  column_name EXISTS (SELECT * FROM   table_name );

SQLite EXPLAIN 语句:

  • EXPLAIN INSERT statement...;
    or 
    EXPLAIN QUERY PLAN SELECT statement...;

SQLite GLOB 子句:

  • SELECT column1, column2....columnN
    FROM   table_name
    WHERE  column_name GLOB { PATTERN };

SQLite GROUP BY 子句:

  • SELECT SUM(column_name)
    FROM   table_name
    WHERE  CONDITION
    GROUP BY column_name;

SQLite HAVING 子句:

  • SELECT SUM(column_name)
    FROM   table_name
    WHERE  CONDITION
    GROUP BY column_name
    HAVING (arithematic function condition);

SQLite INSERT INTO 语句:

  • INSERT INTO table_name( column1, column2....columnN)
    VALUES ( value1, value2....valueN);

SQLite IN 子句:

  • SELECT column1, column2。。。。columnN
    FROM   table_name
    WHERE  column_name IN (val-1, val-2,...val-N);

SQLite Like 子句:

  • SELECT column1, column2。。。。columnN
    FROM   table_name
    WHERE  column_name LIKE { PATTERN };

SQLite NOT IN 子句:

  • SELECT column1, column2....columnN
    FROM   table_name
    WHERE  column_name NOT IN (val-1, val-2,...val-N);

SQLite ORDER BY 子句:

  • SELECT column1, column2....columnN
    FROM   table_name
    WHERE  CONDITION
    ORDER BY column_name {ASC|DESC};

SQLite PRAGMA 语句:

  • PRAGMA pragma_name;
    
    For example:
    
    PRAGMA page_size;
    PRAGMA cache_size = 1024;
    PRAGMA table_info(table_name);

SQLite RELEASE SAVEPOINT 语句:

  • RELEASE savepoint_name;

SQLite REINDEX 语句:

  • REINDEX collation_name;
    REINDEX database_name.index_name;
    REINDEX database_name.table_name;

SQLite ROLLBACK 语句:

  • ROLLBACK;
    or
    ROLLBACK TO SAVEPOINT savepoint_name;

SQLite SAVEPOINT 语句:

  • SAVEPOINT savepoint_name;

SQLite SELECT 语句:

  • SELECT column1, column2....columnN
    FROM   table_name;

SQLite UPDATE 语句:

  • UPDATE table_name
    SET column1 = value1, column2 = value2....columnN=valueN
    [ WHERE  CONDITION ];

SQLite VACUUM 语句:

  • VACUUM;

SQLite WHERE 子句:

  • SELECT column1, column2....columnN
    FROM   table_name
    WHERE  CONDITION;

     

 

SQLite语法

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原文地址:https://www.cnblogs.com/icefree/p/11105468.html

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