📜  sql select 语句 - SQL 代码示例

📅  最后修改于: 2022-03-11 15:05:09.653000             🧑  作者: Mango

代码示例6
Projection = Select the columns in
a table that are returned by a query
Selection = Selects the rows in a
table that are returned by a query
Join = Brings together data that is 
stored in different tables by
specifying the link between them