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multi_bind_example.js
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multi_bind_example.js
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const taos = require("td2.0-connector");
const conn = taos.connect({
host: "localhost",
});
const cursor = conn.cursor();
function prepareSTable() {
cursor.execute("CREATE DATABASE power");
cursor.execute("USE power");
cursor.execute(
"CREATE STABLE meters (ts TIMESTAMP, current FLOAT, voltage INT, phase FLOAT) TAGS (location BINARY(64), groupId INT)"
);
}
//ANCHOR: insertData
function insertData() {
// init
cursor.stmtInit();
// prepare
cursor.stmtPrepare(
"INSERT INTO ? USING meters TAGS(?, ?) VALUES(?, ?, ?, ?)"
);
// bind table name and tags
let tagBind = new taos.TaosBind(2);
tagBind.bindBinary("California.SanFrancisco");
tagBind.bindInt(2);
cursor.stmtSetTbnameTags("d1001", tagBind.getBind());
// bind values
let valueBind = new taos.TaosMultiBindArr(4);
valueBind.multiBindTimestamp([1648432611249, 1648432611749]);
valueBind.multiBindFloat([10.3, 12.6]);
valueBind.multiBindInt([219, 218]);
valueBind.multiBindFloat([0.31, 0.33]);
cursor.stmtBindParamBatch(valueBind.getMultiBindArr());
cursor.stmtAddBatch();
// execute
cursor.stmtExecute();
cursor.stmtClose();
}
//ANCHOR_END: insertData
try {
prepareSTable();
insertData();
} finally {
cursor.close();
conn.close();
}