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Course Queries Syllabus Queries 2 years ago
Posted on 16 Aug 2022, this text provides information on Syllabus Queries related to Course Queries. Please note that while accuracy is prioritized, the data presented might not be entirely correct or up-to-date. This information is offered for general knowledge and informational purposes only, and should not be considered as a substitute for professional advice.
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I want to copy primary key from table Subject, Reference, Syllabus into table Reference_Subject. This doesn't work:
INSERT INTO REFERENCE_SUBJECT (REFERENCE_ID,SYLLABUS_ID,SUBJECT_ID) (SELECT REFERENCE_ID FROM REFERENCE , SELECT SYLLABUS_ID FROM SYLLABUS , SELECT SUBJECT_ID FROM SUBJECT);
The error is
invalid table name
Use select distinct otherwise you obtain repeated rows do the join form REFERENCE, SYLLABUS, SUBJECT
And you shuold join the 3 tables anyway .. without knowing the join you can
INSERT INTO REFERENCE_SUBJECT (REFERENCE_ID,SYLLABUS_ID,SUBJECT_ID) SELECT DISTINCT REFERENCE_ID SYLLABUS_ID SUBJECT_ID FROM REFERENCE, SYLLABUS, SUBJECT;
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