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Anonymous committed 3fd4d11

ECL test

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tests/examplefiles/test.ecl

+/*##############################################################################
+
+    Copyright (C) 2011 HPCC Systems.
+
+    All rights reserved. This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as
+    published by the Free Software Foundation, either version 3 of the
+    License, or (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+############################################################################## */
+
+#option ('slidingJoins', true);
+
+namesRecord :=
+            RECORD
+string20        surname;
+string10        forename;
+integer2        age;
+integer2        dadAge;
+integer2        mumAge;
+            END;
+
+namesRecord2 :=
+            record
+string10        extra;
+namesRecord;
+            end;
+
+namesTable := dataset('x',namesRecord,FLAT);
+namesTable2 := dataset('y',namesRecord2,FLAT);
+
+integer2 aveAgeL(namesRecord l) := (l.dadAge+l.mumAge)/2;
+integer2 aveAgeR(namesRecord2 r) := (r.dadAge+r.mumAge)/2;
+
+// Standard join on a function of left and right
+output(join(namesTable, namesTable2, aveAgeL(left) = aveAgeR(right)));
+
+//Several simple examples of sliding join syntax
+output(join(namesTable, namesTable2, left.age >= right.age - 10 and left.age <= right.age +10));
+output(join(namesTable, namesTable2, left.age between right.age - 10 and right.age +10));
+output(join(namesTable, namesTable2, left.age between right.age + 10 and right.age +30));
+output(join(namesTable, namesTable2, left.age between (right.age + 20) - 10 and (right.age +20) + 10));
+output(join(namesTable, namesTable2, aveAgeL(left) between aveAgeR(right)+10 and aveAgeR(right)+40));
+
+//Same, but on strings.  Also includes age to ensure sort is done by non-sliding before sliding.
+output(join(namesTable, namesTable2, left.surname between right.surname[1..10]+'AAAAAAAAAA' and right.surname[1..10]+'ZZZZZZZZZZ' and left.age=right.age));
+output(join(namesTable, namesTable2, left.surname between right.surname[1..10]+'AAAAAAAAAA' and right.surname[1..10]+'ZZZZZZZZZZ' and left.age=right.age,all));
+
+//This should not generate a self join
+output(join(namesTable, namesTable, left.age between right.age - 10 and right.age +10));
+