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get tuple function added

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Rebecca Schofield 2015-09-24 20:46:30 -05:00
parent 1e5e31b965
commit de204d8b92
3 changed files with 3 additions and 3 deletions
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4
DBEngine.cpp
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@ -84,7 +84,7 @@ void DBEngine::rename(Relation& r, vector<string> oldnames, vector<string> newna
} }
} }
Relation DBEngine::setUnion(Relation r1, Relation r2){ /*Relation DBEngine::setUnion(Relation r1, Relation r2){
if (r1.getAttributeNames() != r2.getAttributeNames()){ if (r1.getAttributeNames() != r2.getAttributeNames()){
cout << "Failure to union: the relations are not union-compatible"; cout << "Failure to union: the relations are not union-compatible";
return; return;
@ -114,4 +114,4 @@ Relation DBEngine::setUnion(Relation r1, Relation r2){
Relation new_r("TEMP", new_atts); Relation new_r("TEMP", new_atts);
return new_r; return new_r;
} }
} }*/

2
DBEngine.h
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@ -21,7 +21,7 @@ public:
Relation selection(string attName, string s, Relation r); Relation selection(string attName, string s, Relation r);
Relation projection(vector<string> input, Relation r); Relation projection(vector<string> input, Relation r);
void rename(Relation& r, vector<string> oldnames, vector<string> newnames); void rename(Relation& r, vector<string> oldnames, vector<string> newnames);
Relation setUnion(Relation r1, Relation r2); //Relation setUnion(Relation r1, Relation r2);
//void setDiff(); //void setDiff();
//void crossProduct(); //void crossProduct();
}; };

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