How to solve this code?

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ORA-00904: : invalid identifier

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CREATE TABLE SCHEDULE
(Schedule_ID  NUMBER(15) CONSTRAINT Schedule_ID_pk PRIMARY KEY,   
Course_Name VARCHAR2(50) NOT NULL,   
Semester NUMBER(15) NOT NULL,  
Time TIME NOT NULL,
Day VARCHAR2(10) CHECK (Day IN ('Monday','Tuesday','Wednesday','Thursday','Friday','Saturday','Sunday')),
Group VARCHAR2 (5) NOT NULL);

Posted 9-Jul-21 7:27am

Wan Nur Ai'syah

Updated 9-Jul-21 7:56am

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OriginalGriff · Accepted Answer · 2021-07-09T07:56:00

Solution 1

GROUP is a keyword: part of the SQL phrase "GROUP BY".

You cannot use any keyword as a table or column name without escaping the name every time you use it (for Oracle) enclosing it in double quotes.

Better idea: don't use keywords as column names

Posted 9-Jul-21 7:56am

OriginalGriff