题目
题目
单项选择题

What does the SELECT * statement do in SQL?

选项
A.Selects all schemas
B.Selects all rows
C.Selects all columns
D.Selects all databases
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标准答案
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思路分析
To approach this question, I will evaluate what the SQL clause SELECT * is designed to do. Option 1: 'Selects all schemas' — This is incorrect. Schemas are namespaces for database objects, not something that SELECT returns. A query does not retrieve or......Login to view full explanation

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