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Connecting a Node.js Application to an SQLite Database Using sqlite3

Tutorial October 24, 2024 

// Insert data into the "accounts" table
const stmt = db.prepare('INSERT INTO accounts (private_key, address, decimalNumber, has_transactions) VALUES (?, ?, ?, ?)');

stmt.run('private_key_value', 'address_value', 'decimalNumber_value', 1, function(err) {
  if (err) {
    console.error('Error inserting data:', err.message);
  } else {
    console.log(`A row has been inserted with rowid ${this.lastID}`);
  }
});

stmt.finalize();
  • db.prepare(): Prepares an SQL statement for execution.
  • stmt.run(): Executes the prepared statement with the provided values.
  • The ? placeholders are replaced by the corresponding values in order.
  • In this example:
  • 'private_key_value': Replace with the actual private key.
  • 'address_value': Replace with the actual wallet address.
  • 'decimalNumber_value': Replace with the actual decimal number or relevant value.
  • 1: Represents true for the has_transactions boolean field (use 0 for false).
  • this.lastID: Provides the row ID of the last inserted row.
  • stmt.finalize(): Finalizes the statement, releasing resources.

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