sqlite语法
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。
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。
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。
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。C 庚哥的注释可以跨越多行。
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。
sqlite ANALYZE 语句:
@H_404_35@ANALYZE; or ANALYZE database_name; or ANALYZE database_name.table_name;sqlite AND/OR 子句:
@H_404_35@SELECT column1,column2....columnN FROM table_name WHERE CONDITION-1 {AND|OR} CONDITION-2;sqlite ALTER TABLE 语句:
@H_404_35@ALTER TABLE table_name ADD COLUMN column_def...;sqlite ALTER TABLE 语句(Rename):
@H_404_35@ALTER TABLE table_name RENAME TO new_table_name;sqlite ATTACH DATABASE 语句:
@H_404_35@ATTACH DATABASE 'DatabaseName' As 'Alias-Name';sqlite BEGIN TRANSACTION 语句:
@H_404_35@BEGIN; or BEGIN EXCLUSIVE TRANSACTION;sqlite BETWEEN 子句:
sqlite COMMIT 语句: @H_404_35@COMMIT;
sqlite CREATE INDEX 语句:
@H_404_35@CREATE INDEX index_name ON table_name ( column_name COLLATE NOCASE );sqlite CREATE UNIQUE INDEX 语句:
@H_404_35@CREATE UNIQUE INDEX index_name ON table_name ( column1,column2,...columnN);sqlite CREATE TABLE 语句:
@H_404_35@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_35@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_35@CREATE VIEW database_name.view_name AS SELECT statement....;sqlite CREATE VIRTUAL TABLE 语句:
@H_404_35@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_35@COMMIT;sqlite COUNT 子句:
@H_404_35@SELECT COUNT(column_name) FROM table_name WHERE CONDITION;sqlite DELETE 语句:
@H_404_35@DELETE FROM table_name WHERE {CONDITION};sqlite DETACH DATABASE 语句:
@H_404_35@DETACH DATABASE 'Alias-Name';sqlite DISTINCT 子句:
@H_404_35@SELECT DISTINCT column1,column2....columnN FROM table_name;sqlite DROP INDEX 语句:
@H_404_35@DROP INDEX database_name.index_name;sqlite DROP TABLE 语句:
@H_404_35@DROP TABLE database_name.table_name;sqlite DROP VIEW 语句:
@H_404_35@DROP INDEX database_name.view_name;sqlite DROP TRIGGER 语句:
@H_404_35@DROP INDEX database_name.trigger_name;sqlite EXISTS 子句:
sqlite EXPLAIN 语句: @H_404_35@EXPLAIN INSERT statement...; or EXPLAIN QUERY PLAN SELECT statement...;
sqlite GLOB 子句:
sqlite GROUP BY 子句: @H_404_35@SELECT SUM(column_name) FROM table_name WHERE CONDITION GROUP BY column_name;
sqlite HAVING 子句:
@H_404_35@SELECT SUM(column_name) FROM table_name WHERE CONDITION GROUP BY column_name HAVING (arithematic function condition);sqlite INSERT INTO 语句:
@H_404_35@INSERT INTO table_name( column1,column2....columnN) VALUES ( value1,value2....valueN);sqlite IN 子句:
sqlite Like 子句:sqlite NOT IN 子句:sqlite ORDER BY 子句:sqlite PRAGMA 语句: @H_404_35@PRAGMA pragma_name; For example: PRAGMA page_size; PRAGMA cache_size = 1024; PRAGMA table_info(table_name);sqlite RELEASE SAVEPOINT 语句:
@H_404_35@RELEASE savepoint_name;sqlite REINDEX 语句:
@H_404_35@REINDEX collation_name; REINDEX database_name.index_name; REINDEX database_name.table_name;sqlite ROLLBACK 语句:
@H_404_35@ROLLBACK; or ROLLBACK TO SAVEPOINT savepoint_name;
sqlite SAVEPOINT 语句:
@H_404_35@SAVEPOINT savepoint_name;sqlite SELECT 语句:
sqlite UPDATE 语句: @H_404_35@UPDATE table_name SET column1 = value1,column2 = value2....columnN=valueN [ WHERE CONDITION ];
sqlite VACUUM 语句:
@H_404_35@VACUUM;sqlite WHERE 子句:
原文链接:https://www.f2er.com/sqlite/200112.html