Create a MySQL table using Node.js
Generally speaking, NoSQL databases (such as MongoDB) are more popular among Node developers. However, which database management system you choose depends entirely on your use cases and choices. The type of database you choose depends primarily on the needs of your project.
For example, if you need to create tables or insert and process large amounts of data in real time, a NoSQL database is a good choice; while if your project involves more complex queries and transaction processing, a SQL database is more reasonable.
In this article, we will explain how to connect to MySQL and create a new table in it.
Install NPM MySQL dependencies
Here are the steps to check your application’s connection to the MySQL database.
Create a project of your choice and navigate to it.
>> mkdir mysql-test >> cd mysql-test
Use the following command to create a package.json file
>> npm init -y
You will get The following output −
Wrote to /home/abc/mysql-test/package.json:
{
"name": "mysql-test",
"version": "1.0.0",
"description": "",
"main": "index.js",
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1"
},
"keywords": [],
"author": "",
"license": "ISC"
}Install the MySQL module-
>> npm install mysql
Output
+ mysql@2.18.1 added 11 packages from 15 contributors and audited 11 packages in 3.264s found 0 vulnerabilities
Create a MySQL table using Node
Create a JS file called app.js
Copy and paste the code snippet given below
Run the file using the following command
>> node app.js
Example
// Checking the MySQL dependency in NPM
var mysql = require('mysql');
// Creating a mysql connection
var con = mysql.createConnection({
host: "localhost",
user: "yourusername",
password: "yourpassword",
database: "mydb"
});
con.connect(function(err) {
if (err) throw err;
console.log("Database connected!");
var sql = "CREATE TABLE students (name VARCHAR(255), address VARCHAR(255))";
con.query(sql, function (err, result) {
if (err) throw err;
console.log("Table created");
});
});Output
The following output will be printed on the console:
Database connected! Table created
The above is the detailed content of Create a MySQL table using Node.js. For more information, please follow other related articles on the PHP Chinese website!
Hot AI Tools
Undress AI Tool
Undress images for free
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
How to audit database activity in MySQL?
Aug 05, 2025 pm 01:34 PM
UseMySQLEnterpriseAuditPluginifonEnterpriseEditionbyenablingitinconfigurationwithserver-audit=FORCE_PLUS_PERMANENTandcustomizeeventsviaserver_audit_events;2.Forfreealternatives,usePerconaServerorMariaDBwiththeiropen-sourceauditpluginslikeaudit_log;3.
How to use check constraints to enforce data rules in MySQL?
Aug 06, 2025 pm 04:49 PM
MySQL supports CHECK constraints to force domain integrity, effective from version 8.0.16; 1. Add constraints when creating a table: Use CREATETABLE to define CHECK conditions, such as age ≥18, salary > 0, department limit values; 2. Modify the table to add constraints: Use ALTERTABLEADDCONSTRAINT to limit field values, such as name non-empty; 3. Use complex conditions: support multi-column logic and expressions, such as end date ≥start date and completion status must have an end date; 4. Delete constraints: use ALTERTABLEDROPCONSTRAINT to specify the name to delete; 5. Notes: MySQL8.0.16, InnoDB or MyISAM needs to be quoted
How to implement a tagging system in a MySQL database?
Aug 05, 2025 am 05:41 AM
Useamany-to-manyrelationshipwithajunctiontabletolinkitemsandtagsviathreetables:items,tags,anditem_tags.2.Whenaddingtags,checkforexistingtagsinthetagstable,insertifnecessary,thencreatemappingsinitem_tagsusingtransactionsforconsistency.3.Queryitemsbyta
Best Practices for Managing Large MySQL Tables
Aug 05, 2025 am 03:55 AM
When dealing with large tables, MySQL performance and maintainability face challenges, and it is necessary to start from structural design, index optimization, table sub-table strategy, etc. 1. Reasonably design primary keys and indexes: It is recommended to use self-increment integers as primary keys to reduce page splits; use overlay indexes to improve query efficiency; regularly analyze slow query logs and delete invalid indexes. 2. Rational use of partition tables: partition according to time range and other strategies to improve query and maintenance efficiency, but attention should be paid to partitioning and cutting issues. 3. Consider reading and writing separation and library separation: Read and writing separation alleviates the pressure on the main library. The library separation and table separation are suitable for scenarios with a large amount of data. It is recommended to use middleware and evaluate transaction and cross-store query problems. Early planning and continuous optimization are the key.
How to show all databases in MySQL
Aug 08, 2025 am 09:50 AM
To display all databases in MySQL, you need to use the SHOWDATABASES command; 1. After logging into the MySQL server, you can execute the SHOWDATABASES; command to list all databases that the current user has permission to access; 2. System databases such as information_schema, mysql, performance_schema and sys exist by default, but users with insufficient permissions may not be able to see it; 3. You can also query and filter the database through SELECTSCHEMA_NAMEFROMinformation_schema.SCHEMATA; for example, excluding the system database to only display the database created by users; make sure to use
How to Troubleshoot Common MySQL Connection Errors?
Aug 08, 2025 am 06:44 AM
Check whether the MySQL service is running, use sudosystemctlstatusmysql to confirm and start; 2. Make sure that bind-address is set to 0.0.0.0 to allow remote connections and restart the service; 3. Verify whether the 3306 port is open, check and configure the firewall rules to allow the port; 4. For the "Accessdenied" error, you need to check the user name, password and host name, and then log in to MySQL and query the mysql.user table to confirm permissions. If necessary, create or update the user and authorize it, such as using 'your_user'@'%'; 5. If authentication is lost due to caching_sha2_password
How to use the COALESCE() function in MySQL?
Aug 14, 2025 pm 06:15 PM
COALESCE()returnsthefirstnon-NULLvaluefromalistofexpressions,enablinggracefulhandlingofmissingdatabysubstitutingdefaults,mergingcolumnvalues,supportingcalculationswithoptionalfields,andprovidingfallbacksinjoinsandaggregations,ensuringpredictableresul
How to add a primary key to an existing table in MySQL?
Aug 12, 2025 am 04:11 AM
To add a primary key to an existing table, use the ALTERTABLE statement with the ADDPRIMARYKEY clause. 1. Ensure that the target column has no NULL value, no duplication and is defined as NOTNULL; 2. The single-column primary key syntax is ALTERTABLE table name ADDPRIMARYKEY (column name); 3. The multi-column combination primary key syntax is ALTERTABLE table name ADDPRIMARYKEY (column 1, column 2); 4. If the column allows NULL, you must first execute MODIFY to set NOTNULL; 5. Each table can only have one primary key, and the old primary key must be deleted before adding; 6. If you need to increase it yourself, you can use MODIFY to set AUTO_INCREMENT. Ensure data before operation
