1
|
DEFINE TEMP-TABLE tt1
|
2
|
FIELD f1 AS INT
|
3
|
FIELD f2 AS DATE.
|
4
|
|
5
|
CREATE tt1.
|
6
|
ASSIGN tt1.f1 = -1 tt1.f2 = ?.
|
7
|
|
8
|
CREATE tt1.
|
9
|
ASSIGN tt1.f1 = 2 tt1.f2 = TODAY.
|
10
|
|
11
|
CREATE tt1.
|
12
|
ASSIGN tt1.f1 = 3 tt1.f2 = ?.
|
13
|
|
14
|
CREATE tt1.
|
15
|
ASSIGN tt1.f1 = 5 tt1.f2 = 12/12/12.
|
16
|
|
17
|
DEFINE TEMP-TABLE tt2
|
18
|
FIELD f1 AS INT
|
19
|
FIELD f2 AS DATE.
|
20
|
|
21
|
CREATE tt2.
|
22
|
ASSIGN tt2.f1 = -1 tt2.f2 = 01/01/01.
|
23
|
|
24
|
CREATE tt2.
|
25
|
ASSIGN tt2.f1 = 2 tt2.f2 = TODAY.
|
26
|
|
27
|
CREATE tt2.
|
28
|
ASSIGN tt2.f1 = 3 tt2.f2 = ?.
|
29
|
|
30
|
CREATE tt2.
|
31
|
ASSIGN tt2.f1 = 5 tt2.f2 = 12/12/12.
|
32
|
|
33
|
|
34
|
/* common for multiple functions */
|
35
|
DEFINE QUERY qq FOR tt1, tt2.
|
36
|
DEFINE VAR cnt AS INTEGER.
|
37
|
|
38
|
FUNCTION f-dynamic RETURN INTEGER () :
|
39
|
DISPLAY "Dynamic" SKIP WITH NO-LABEL FRAME fr-dynamic.
|
40
|
DEFINE VARIABLE qh AS HANDLE NO-UNDO.
|
41
|
CREATE QUERY qh.
|
42
|
qh:SET-BUFFERS(BUFFER tt1:HANDLE, BUFFER tt2:HANDLE).
|
43
|
qh:QUERY-PREPARE("FOR EACH tt1, EACH tt2 WHERE tt2.f1 EQ tt1.f1 AND tt2.f2 EQ tt1.f2").
|
44
|
qh:QUERY-OPEN.
|
45
|
qh:GET-NEXT(NO-LOCK).
|
46
|
cnt = 1.
|
47
|
|
48
|
DO WHILE NOT qh:QUERY-OFF-END:
|
49
|
DISPLAY tt1 WITH FRAME fr-dynamic.
|
50
|
DISPLAY tt2 WITH FRAME fr-dynamic.
|
51
|
cnt = cnt * tt1.f1.
|
52
|
qh:GET-NEXT().
|
53
|
END.
|
54
|
|
55
|
qh:QUERY-CLOSE().
|
56
|
DELETE OBJECT qh.
|
57
|
RETURN cnt.
|
58
|
END FUNCTION.
|
59
|
|
60
|
|
61
|
FUNCTION f-static RETURN INTEGER () :
|
62
|
DISPLAY "Static" SKIP WITH NO-LABEL FRAME fr-static.
|
63
|
cnt = 1.
|
64
|
|
65
|
FOR EACH tt1, EACH tt2 WHERE tt2.f1 EQ tt1.f1 AND tt2.f2 EQ tt1.f2:
|
66
|
DISPLAY tt1 WITH FRAME fr-static.
|
67
|
DISPLAY tt2 WITH FRAME fr-static.
|
68
|
cnt = cnt * tt1.f1.
|
69
|
END.
|
70
|
|
71
|
RETURN cnt.
|
72
|
END FUNCTION.
|
73
|
|
74
|
|
75
|
FUNCTION f-static-query RETURN INTEGER () :
|
76
|
DISPLAY "Static Query" SKIP WITH NO-LABEL FRAME fr-static-query.
|
77
|
OPEN QUERY qq FOR EACH tt1, EACH tt2 WHERE tt2.f1 EQ tt1.f1 AND tt2.f2 EQ tt1.f2.
|
78
|
GET FIRST qq.
|
79
|
cnt = 1.
|
80
|
|
81
|
DO WHILE AVAILABLE tt1:
|
82
|
DISPLAY tt1 WITH FRAME fr-static-query.
|
83
|
DISPLAY tt2 WITH FRAME fr-static-query.
|
84
|
cnt = cnt * tt1.f1.
|
85
|
GET NEXT qq.
|
86
|
END.
|
87
|
|
88
|
RETURN cnt.
|
89
|
END FUNCTION.
|
90
|
|
91
|
|
92
|
FUNCTION f-static-preselect RETURN INTEGER () :
|
93
|
DISPLAY "Static Preselect" SKIP WITH NO-LABEL FRAME fr-static-preselect.
|
94
|
OPEN QUERY qq PRESELECT EACH tt1, EACH tt2 WHERE tt2.f1 EQ tt1.f1 AND tt2.f2 EQ tt1.f2.
|
95
|
GET FIRST qq.
|
96
|
cnt = 1.
|
97
|
|
98
|
DO WHILE AVAILABLE tt1:
|
99
|
DISPLAY tt1 WITH FRAME fr-static-preselect.
|
100
|
DISPLAY tt2 WITH FRAME fr-static-preselect.
|
101
|
cnt = cnt * tt1.f1.
|
102
|
GET NEXT qq.
|
103
|
END.
|
104
|
|
105
|
RETURN cnt.
|
106
|
END FUNCTION.
|
107
|
|
108
|
DISPLAY "Expected: 2 * 3 * 5 = 30" SKIP
|
109
|
f-dynamic() f-static() f-static-query() f-static-preselect().
|
110
|
|
111
|
|