55 lines
1.3 KiB
JavaScript
55 lines
1.3 KiB
JavaScript
const taos = require("@tdengine/client");
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const conn = taos.connect({
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host: "localhost",
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});
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const cursor = conn.cursor();
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function prepareSTable() {
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cursor.execute("CREATE DATABASE power");
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cursor.execute("USE power");
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cursor.execute(
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"CREATE STABLE meters (ts TIMESTAMP, current FLOAT, voltage INT, phase FLOAT) TAGS (location BINARY(64), groupId INT)"
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);
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}
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function insertData() {
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// init
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cursor.stmtInit();
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// prepare
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cursor.stmtPrepare(
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"INSERT INTO ? USING meters TAGS(?, ?) VALUES(?, ?, ?, ?)"
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);
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// bind table name and tags
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let tagBind = new taos.TaosMultiBindArr(2);
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tagBind.multiBindBinary(["California.SanFrancisco"]);
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tagBind.multiBindInt([2]);
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cursor.stmtSetTbnameTags("d1001", tagBind.getMultiBindArr());
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// bind values
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let rows = [[1648432611249, 1648432611749], [10.3, 12.6], [219, 218], [0.31, 0.33]];
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let valueBind = new taos.TaosMultiBindArr(4);
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valueBind.multiBindTimestamp(rows[0]);
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valueBind.multiBindFloat(rows[1]);
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valueBind.multiBindInt(rows[2]);
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valueBind.multiBindFloat(rows[3]);
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cursor.stmtBindParamBatch(valueBind.getMultiBindArr());
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cursor.stmtAddBatch();
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// execute
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cursor.stmtExecute();
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cursor.stmtClose();
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}
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try {
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prepareSTable();
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insertData();
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} finally {
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cursor.close();
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conn.close();
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}
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