SQLite 语法2024最新入门教程, 在这套课程里你可以学到关于大小写敏感性,注释,SQLite 语句,SQLite ANALYZE 语句:,SQLite AND/OR 子句:,SQLite ALTER TABLE 语句:,SQLite ALTER TABLE 语句(Rename):,SQLite ATTACH DATABASE 语句:,SQLite BEGIN TRANSACTION 语句:,SQLite BETWEEN 子句:,SQLite COMMIT 语句:,SQLite CREATE INDEX 语句:,SQLite CREATE UNIQUE INDEX 语句:,SQLite CREATE TABLE 语句:,SQLite CREATE TRIGGER 语句:,SQLite CREATE VIEW 语句:,SQLite CREATE VIRTUAL TABLE 语句:,SQLite COMMIT TRANSACTION 语句:,SQLite COUNT 子句:,SQLite DELETE 语句:,SQLite DETACH DATABASE 语句:,SQLite DISTINCT 子句:,SQLite DROP INDEX 语句:,SQLite DROP TABLE 语句:,SQLite DROP VIEW 语句:,SQLite DROP TRIGGER 语句:,SQLite EXISTS 子句:,SQLite EXPLAIN 语句:,SQLite GLOB 子句:,SQLite GROUP BY 子句:,SQLite HAVING 子句:,SQLite INSERT INTO 语句:,SQLite IN 子句:,SQLite Like 子句:,SQLite NOT IN 子句:,SQLite ORDER BY 子句:,SQLite PRAGMA 语句:,SQLite RELEASE SAVEPOINT 语句:,SQLite REINDEX 语句:,SQLite ROLLBACK 语句:,SQLite SAVEPOINT 语句:,SQLite SELECT 语句:,SQLite UPDATE 语句:,SQLite VACUUM 语句:,SQLite WHERE 子句:,
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。
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。
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。SQLite的注释可以跨越多行。
sqlite>.help -- This is a single line comment
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。
ANALYZE; or ANALYZE database_name; or ANALYZE database_name.table_name;
SELECT column1, column2zhzhcolumnN FROM table_name WHERE CONDITION-1 {AND|OR} CONDITION-2;
ALTER TABLE table_name ADD COLUMN column_defzh.;
ALTER TABLE table_name RENAME TO new_table_name;
ATTACH DATABASE 'DatabaseName' As 'Alias-Name';
BEGIN; or BEGIN EXCLUSIVE TRANSACTION;
SELECT column1, column2zhzhcolumnN FROM table_name WHERE column_name BETWEEN val-1 AND val-2;
COMMIT;
CREATE INDEX index_name ON table_name ( column_name COLLATE NOCASE );
CREATE UNIQUE INDEX index_name ON table_name ( column1, column2,zh.columnN);
CREATE TABLE table_name( column1 datatype, column2 datatype, column3 datatype, zhzh. columnN datatype, PRIMARY KEY( one or more columns ) );
CREATE TRIGGER database_name.trigger_name BEFORE INSERT ON table_name FOR EACH ROW BEGIN stmt1; stmt2; zhzh END;
CREATE VIEW database_name.view_name AS SELECT statementzhzh;
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, column2zhzhcolumnN FROM table_name;
DROP INDEX database_name.index_name;
DROP TABLE database_name.table_name;
DROP INDEX database_name.view_name;
DROP INDEX database_name.trigger_name;
SELECT column1, column2zhzhcolumnN FROM table_name WHERE column_name EXISTS (SELECT * FROM table_name );
EXPLAIN INSERT statementzh.; or EXPLAIN QUERY PLAN SELECT statementzh.;
SELECT column1, column2zhzhcolumnN 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, column2zhzhcolumnN) VALUES ( value1, value2zhzhvalueN);
SELECT column1, column2zhzhcolumnN FROM table_name WHERE column_name IN (val-1, val-2,zh.val-N);
SELECT column1, column2zhzhcolumnN FROM table_name WHERE column_name LIKE { PATTERN };
SELECT column1, column2zhzhcolumnN FROM table_name WHERE column_name NOT IN (val-1, val-2,zh.val-N);
SELECT column1, column2zhzhcolumnN 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, column2zhzhcolumnN FROM table_name;
UPDATE table_name SET column1 = value1, column2 = value2zhzhcolumnN=valueN [ WHERE CONDITION ];
VACUUM;
SELECT column1, column2zhzhcolumnN FROM table_name WHERE CONDITION;