MySQL和SQLite3都是關系型數據庫管理系統(tǒng),雖然功能大致相似,但是它們的命令卻有所區(qū)別。
1.連接數據庫
MySQL:mysql -h [hostname] -u [username] -p [database_name] SQLite3:sqlite3 [database_file_path]
2.顯示數據庫中的表
MySQL:SHOW TABLES; SQLite3:.tables
3.創(chuàng)建表
MySQL:CREATE TABLE [table_name] ([column_name] [data_type]); SQLite3:CREATE TABLE [table_name] ([column_name] [data_type]);
4.插入數據
MySQL:INSERT INTO [table_name] ([column_name]) VALUES ([value]); SQLite3:INSERT INTO [table_name] ([column_name]) VALUES ([value]);
5.更新數據
MySQL:UPDATE [table_name] SET [column_name] = [new_value] WHERE [condition]; SQLite3:UPDATE [table_name] SET [column_name] = [new_value] WHERE [condition];
6.刪除數據
MySQL:DELETE FROM [table_name] WHERE [condition]; SQLite3:DELETE FROM [table_name] WHERE [condition];
7.查詢數據
MySQL:SELECT [column_name] FROM [table_name] WHERE [condition]; SQLite3:SELECT [column_name] FROM [table_name] WHERE [condition];
以上是MySQL和SQLite3的一些基本命令差別,需要注意的是,不同的數據庫系統(tǒng)可能在寫法上略有不同,需要根據具體情況來調整。