1ae4b86ca9
* The interval must fit exactly n times to the time range and query made so that the resulting avg will be exact * Add interval fix also to trend query
42 lines
1.1 KiB
JavaScript
42 lines
1.1 KiB
JavaScript
/**
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* MySQL queries
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*/
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function historyQuery(itemids, table, timeFrom, timeTill, intervalSec, aggFunction) {
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let query = `
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SELECT CAST(itemid AS CHAR) AS metric, MIN(clock) AS time_sec, ${aggFunction}(value) AS value
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FROM ${table}
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WHERE itemid IN (${itemids})
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AND clock > ${timeFrom} AND clock < ${timeTill}
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GROUP BY (clock-${timeFrom}) DIV ${intervalSec}, metric
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ORDER BY time_sec ASC
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`;
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return query;
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}
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function trendsQuery(itemids, table, timeFrom, timeTill, intervalSec, aggFunction, valueColumn) {
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let query = `
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SELECT CAST(itemid AS CHAR) AS metric, MIN(clock) AS time_sec, ${aggFunction}(${valueColumn}) AS value
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FROM ${table}
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WHERE itemid IN (${itemids})
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AND clock > ${timeFrom} AND clock < ${timeTill}
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GROUP BY (clock-${timeFrom}) DIV ${intervalSec}, metric
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ORDER BY time_sec ASC
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`;
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return query;
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}
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const TEST_QUERY = `SELECT CAST(itemid AS CHAR) AS metric, clock AS time_sec, value_avg AS value FROM trends_uint LIMIT 1`;
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function testQuery() {
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return TEST_QUERY;
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}
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const mysql = {
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historyQuery,
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trendsQuery,
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testQuery
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};
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export default mysql;
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