Merge and aggregate datasets: Difference between revisions
Harbour: use a value of -999 for missing scores
(Harbour: use a value of -999 for missing scores) |
|||
Line 798:
=={{header|Harbour}}==
Harbour does not have special values for NA or NaN, and missing numerical values are represented as zeros. In the following, we have used -999 for missing scores.
<syntaxhighlight lang="xbase">
#xcommand INSERT INTO <table> ( <uField1>[, <uFieldN> ] ) VALUE ( <uVal1>[, <uValN> ] ) => ;
<table>->(dbAppend()); <table>-><uField1> := <uVal1> [; <table>-><uFieldN> := <uValN>]
Line 827 ⟶ 828:
vStruct := {{"patient_id", "n", 8, 0}, {"visit_date", "d", 10, 0}, {"score", "n", 8, 1}}
dbCreate( "visit", vStruct,, .T., "visit" )
INSERT INTO visit (patient_id, visit_date, score) VALUES (2002, ctod("2020-09-10"), 6.8), ;
▲ INSERT INTO visit (patient_id, visit_date, score) VALUES (1001, ctod("2020-11-19"), 5.3)
INDEX ON patient_id TO visit_id
Line 846 ⟶ 844:
DO WHILE ! Eof()
xCurId := patient_id && grouping variable
aAgg := {0, 0, 0.0, ctod("
DO WHILE ! Eof() .AND. xCurId == patient_id
aAgg := {1+aAgg[1], iif(score==
iif(score==-999, aAgg[3], score+aAgg[3]), max(visit_date, aAgg[4])} && update
SKIP
ENDDO
| |||