In which case would you use a FULL OUTER JOIN? () A. Both tables have NULL values.B. You want all unmatched data from one table.C. You want all matched data from both tables.D. You want all unmatched data from both tables.E. One of the tables has more data than the other.F. You want all matched and unmatched data from only one table.

In which case would you use a FULL OUTER JOIN? ()

A. Both tables have NULL values.

B. You want all unmatched data from one table.

C. You want all matched data from both tables.

D. You want all unmatched data from both tables.

E. One of the tables has more data than the other.

F. You want all matched and unmatched data from only one table.


相关考题:

You’ll be punished by law if you ________ your child. (A) use(B) abuse(C) used(D) abused

”You ____ have a wrong number,” she said. “There’s no one of that name here.”A. needB. canC. mustD. would

7. If I _______ you,l_______ take an umbrella with me.A. was ; shouldB. was ; wouldC. were ; willD. were ; would

Ifyoudon’tliketoswim,you_____aswellstayathome.A)shouldB)mayC)canD)would

"You _________ finish your homework before the dinner." said mother. A.shouldB.have toC.mustD.would

Oneoftheusecasesinyourwebapplicationusesmanysession-scopedattributes.Attheendoftheusecase,youwanttoclearoutthissetofattributesfromthesessionobject.Assumethatthisstaticvariableholdsthissetofattributenames:201.privatestaticfinalSetUSE_CASE_ATTRS;202.static{203.USE_CASE_ATTRS.add(customerOID);204.USE_CASE_ATTRS.add(custMgrBean);205.USE_CASE_ATTRS.add(orderOID);206.USE_CASE_ATTRS.add(orderMgrBean);207.}Whichcodesnippetdeletestheseattributesfromthesessionobject?()A.session.removeAll(USE_CASE_ATTRS);B.for(Stringattr:USE_CASE_ATTRS){session.remove(attr);}C.for(Stringattr:USE_CASE_ATTRS){session.removeAttribute(attr);}D.for(Stringattr:USE_CASE_ATTRS){session.deleteAttribute(attr);}E.session.deleteAllAttributes(USE_CASE_ATTRS);

“You ____ have a wrong number,” she said. “There’s no one of that name here.”A. needB. canC. mustD. would

pgSQL中内联接用INNER而外联接用OUTER,默认为INNER;LEFT、RIGHT、FULL均隐含外联接。

25、pgSQL中内联接用INNER而外联接用OUTER,默认为INNER;LEFT、RIGHT、FULL均隐含外联接。

135、pgSQL中内联接用INNER而外联接用OUTER,默认为INNER;LEFT、RIGHT、FULL均隐含外联接。