SQL SELECT语句

xiaoxiao2021-02-28  77

SELECT语句用于从数据库中选取数据。

语法: SELECT column_name,column_name FROM table_name; 与 SELECT * FROM table_name;

/ * 从“Websites”表中选取“name”和“country”列*/ SELECT name,country FROM Websites;

/* 从“Websites”表中选取所有列*/ SELECT * FROM Wesites;

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