Check the syntax and semantics

Hi all;

I would like to clarify some doubts on the analysis.

Consider two different users are running the same sql statement.

The two users who have separate emp table

HR > select * from emp;

SCOTT > select * from emp;

Is:, Oracle performs syntax and semantics check for query users scott?

Semantic verification should occur at each execution.  In your example, every user has their own table EMP.  They are different objects, and only when the semantic checking name resolution can understand this.  Synonym could have been added since the last time that you ran the query - that would change the semantics (name resolution).

The concepts Guide documents the steps

http://docs.Oracle.com/CD/E11882_01/server.112/e40540/sqllangu.htm#CNCPT1740

Tags: Database

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