Notes on using sqlite3

[pulsecounter.git] / test.sql

diff --git a/test.sql b/test.sql
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+drop table if exists adjustment;
+drop table if exists counter;
+create table adjustment (timestamp datetime, value int);
+create table counter    (timestamp datetime, value int);
+
+insert into adjustment values ('2016-01-07 00:00:00', 10);
+insert into counter    values ('2016-01-07 00:00:01', 5);
+insert into counter    values ('2016-01-07 00:00:02', 10);
+insert into counter    values ('2016-01-07 00:00:03', 15);
+insert into adjustment values ('2016-01-07 00:00:04', 30);
+insert into counter    values ('2016-01-07 00:00:05', 0);
+insert into counter    values ('2016-01-07 00:00:06', 5);
+insert into counter    values ('2016-01-07 00:00:07', 10);
+
+select timestamp, value+adj as value from
+  (select c.timestamp timestamp, c.value value, 
+                (select value from adjustment a
+                        where a.timestamp <= c.timestamp
+                        order by timestamp desc limit 1) adj from counter c
+  ) t;
+