neben/badesee-preprocessor
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database intro

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This commit is contained in:
Wolfgang Hottgenroth
2023-01-29 22:51:18 +01:00
parent b6b40d1d4c
commit ef52969d81
3 changed files with 109 additions and 42 deletions
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26
schema/create-schema.sql
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@ -1,10 +1,10 @@
CREATE TABLE device_t {
CREATE TABLE device_t (
id SERIAL NOT NULL PRIMARY KEY,
device_id VARCHAR(32) NOT NULL UNIQUE,
label VARCHAR(16) NOT NULL
};
);
CREATE TABLE sensor_t {
CREATE TABLE sensor_t (
id SERIAL NOT NULL PRIMARY KEY,
address NUMERIC NOT NULL UNIQUE,
label VARCHAR(5) NOT NULL,
@ -12,14 +12,28 @@ CREATE TABLE sensor_t {
device INTEGER NOT NULL REFERENCES device_t(id),
unique (label, device),
unique (index, device)
};
);
CREATE TABLE measurement_t {
CREATE TABLE measurement_t (
time TIMESTAMP WITHOUT TIME ZONE NOT NULL,
device_name VARCHAR(16) NOT NULL,
sensor_name VARCHAR(5) NOT NULL,
temperature DOUBLE PRECISION
};
);
SELECT create_hypertable('measurement_t', 'time');
insert into device_t (device_id, label) values('eui-43fa12f400006c88', 'badesee');
insert into sensor_t (address, label, index, device)
values (13258914387362694952, '0,5m ', 0, 1),
(12970366982842161448, '2,0m ', 1, 1),
(10664523975231507496, '3,0m ', 2, 1),
(15276209993662477608, '4,0m ', 3, 1);
select d.label as device_label,
s.label as label,
s.address as address,
s.index as index
from device_t d, sensor_t s
where d.id = s.device;