how to check if sqlite table exists in nodejs

Checking if SQLite Table Exists in Node.js

To check if a SQLite table exists in Node.js, you can use the following steps:

1. Connect to the SQLite Database: First, establish a connection to the SQLite database using the sqlite3 module in Node.js.

2. Query the SQLite Master Table: Execute a query to check if the table exists in the SQLite master table. The SQLite master table contains metadata about all the tables and indexes within the database.

3. Check Query Result: Check the result of the query to determine if the table exists.

Here's an example of how you can achieve this in code:

const sqlite3 = require('sqlite3').verbose();

// Connect to the database
const db = new sqlite3.Database('your_database.db');

// Query to check if the table exists
const query = "SELECT name FROM sqlite_master WHERE type='table' AND name='your_table_name'";

// Execute the query
db.get(query, (err, row) => {
  if (err) {
    console.error(err.message);
  } else {
    if (row) {
      console.log('Table exists');
    } else {
      console.log('Table does not exist');
    }
  }
});

// Close the database connection
db.close();

This code connects to the SQLite database, executes a query to check if the specified table exists in the database, and then logs the result based on the query response.

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