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                插入 ~~~ INSERT INTO table_name ( field1, field2,...fieldN ) VALUES ( value1, value2,...valueN ); ~~~ 更新 ~~~ UPDATE table_name SET field1=new-value1, field2=new-value2 ~~~ 刪除 ~~~ DELETE FROM table_name [WHERE Clause] ~~~ * **SELECT**\- 從數據庫中提取數據 * **UPDATE**\- 更新數據庫中的數據 * **DELETE**\- 從數據庫中刪除數據 * **INSERT INTO**\- 向數據庫中插入新數據 * **CREATE DATABASE**\- 創建新數據庫 * **ALTER DATABASE**\- 修改數據庫 * **CREATE TABLE**\- 創建新表 * **ALTER TABLE**\- 變更(改變)數據庫表 * **DROP TABLE**\- 刪除表 * **CREATE INDEX**\- 創建索引(搜索鍵) * **DROP INDEX**\- 刪除索引
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