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npm i mysql2 simplifies this process, like executing a query is as easy as this. for mysql dependency connection.query(sql,(err,res)=>{*some fn here*}) returns all the rows including the success outcomes of a query. Whereas mysql2 dependency connection.execute(sql) returns onl;y the results from the query and not the rows.
Apr 21, 2022 · 13. mysql2 has some support for named parameters (sometimes called "named placeholders" in mysql2) via the named-placeholders package. The feature is disabled by default, and so must be enabled with the namedPlaceholders option when the connection or pool is created, or when the query is executed. Named placeholders use a similar syntax to that ...
6. Connection pooling is a technique that can help improve the performance of Node.js applications that need to make frequent database requests. Instead of opening a new connection for every request, connection pooling allows the application to reuse existing connections from a pool, which reduces the overhead of establishing new connections.
May 31, 2018 · npm install sequelize sequelize-cli mysql2 Require the mysql2 package in the config file and add it to your configurations, attaching the image below for reference. config.js
Nov 26, 2020 · const theInsertIdForAddUser = addUser.insertId. But notice that it also can be retrieved directly in the next MySQL statement via the SQL LAST_INSERT_ID () function. That lets you do an operation like this. INSERT INTO users_properties. (key, value, userId) VALUES ('tel','555-1212',LAST_INSERT_ID());
May 23, 2020 · 10. There is no "@types/mysql2" module on npm. If you want to use the "mysql2" from your TypeScript project, just installing "mysql2" will fix your problem. npm install mysql2. FYI, you may not need 'types/mysql2' module anymore. Because the "mysql2" module supports TS from v2.2.5. This could be a reason the "@types/mysql2" is not on the npm ...
May 6, 2016 · Multiple statement queries. To use this feature you have to enable it for your connection: var connection = mysql.createConnection({multipleStatements: true}); Once enabled, you can execute queries with multiple statements by separating each statement with a semi-colon ;. Result will be an array for each statement.
Jan 17, 2012 · Bulk inserts are possible by using nested array, see the github page. Nested arrays are turned into grouped lists (for bulk inserts), e.g. [['a', 'b'], ['c', 'd ...
Apr 23, 2024 · Thus, for using Sequelize, you cannot use the mysql package; you must use mysql2. If you switch from mysql to mysql2, it should generally work seamlessly for most use cases because mysql2 aims to be a drop-in replacement for mysql. So, uninstall mysql using the command npm uninstall mysql and then install mysql2 using the command npm i mysql2.
Mar 4, 2014 · This is confirmed by this comment on the issue of node-mysql that talks about node-mysql2, by the author of the library: its prepared once and can be used many times. This comment thread also talks about the eviction politic of the prepared statements: LRU or MRU, which is in agreement with the fact that node-mysql2 does indeed prepare and cache the statements (and this is even noted as a TODO in the source code ).
