100+ Left outer joins PowerPoint (PPT) Presentations, Left outer joins PPTs

Left outer joins - PowerPoint PPT Presentation

INTERSECT and EXCEPT: (may no be in MySQL)

INTERSECT and EXCEPT: (may no be in MySQL). (SELECT R.A, R.B FROM R) INTERSECT (SELECT S.A, S.B FROM S). SELECT R.A, R.B FROM R WHERE EXISTS ( SELECT * FROM S WHERE R.A=S.A and R.B=S.B). (SELECT R.A, R.B FROM R) EXCEPT (SELECT S.A, S.B FROM S).

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Left outer joins - PowerPoint PPT Presentation

INTERSECT and EXCEPT: (may no be in MySQL)