98 lines
3.0 KiB
JavaScript
98 lines
3.0 KiB
JavaScript
/* Copyright (c) 2015, 2019, Oracle and/or its affiliates. All rights reserved. */
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/******************************************************************************
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*
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* You may not use the identified files except in compliance with the Apache
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* License, Version 2.0 (the "License.")
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*
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* You may obtain a copy of the License at
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* http://www.apache.org/licenses/LICENSE-2.0.
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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*
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* NAME
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* select2.js
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*
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* DESCRIPTION
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* Executes queries to show array and object output formats.
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* Gets results directly without using a ResultSet.
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*
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* This example uses Node 8's async/await syntax.
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*
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******************************************************************************/
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'use strict';
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const oracledb = require('oracledb');
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const dbConfig = require('./dbconfig.js');
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const demoSetup = require('./demosetup.js');
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// Oracledb properties are applicable to all connections and SQL
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// executions. They can also be set or overridden at the individual
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// execute() call level
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// fetchArraySize can be adjusted to tune the internal data transfer
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// from the Oracle Database to node-oracledb. The value does not
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// affect how, or when, rows are returned by node-oracledb to the
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// application. Buffering is handled internally by node-oracledb.
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// Benchmark to choose the optimal size for each application or query.
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//
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// oracledb.fetchArraySize = 100; // default value is 100
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// This script sets outFormat in the execute() call but it could be set here instead:
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//
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// oracledb.outFormat = oracledb.OUT_FORMAT_OBJECT;
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async function run() {
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let connection;
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try {
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// Get a non-pooled connection
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connection = await oracledb.getConnection(dbConfig);
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await demoSetup.setupBf(connection); // create the demo table
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// The statement to execute
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const sql =
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`SELECT farmer, picked, ripeness
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FROM no_banana_farmer
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ORDER BY id`;
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let result;
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// Default Array Output Format
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result = await connection.execute(sql);
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console.log("----- Banana Farmers (default ARRAY output format) --------");
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console.log(result.rows);
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// Optional Object Output Format
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result = await connection.execute(
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sql,
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{}, // A bind parameter is needed to disambiguate the following options parameter and avoid ORA-01036
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{ outFormat: oracledb.OUT_FORMAT_OBJECT }); // outFormat can be OBJECT or ARRAY. The default is ARRAY
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console.log("----- Banana Farmers (default OBJECT output format) --------");
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console.log(result.rows);
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} catch (err) {
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console.error(err);
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} finally {
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if (connection) {
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try {
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// Connections should always be released when not needed
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await connection.close();
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} catch (err) {
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console.error(err);
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}
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}
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}
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}
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run();
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