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node-query-template

v0.0.1

Published

> Node.js library for SQL queries templating and parameters wrapping

Downloads

2

Readme

node-query-template

Node.js library for SQL queries templating and parameters wrapping

NPM Version

Installation

npm install node-query-template

Features

  • Simple templating, e.g. {{templateName}}
  • Named parameters wrapping, e.g. :namedParameter
  • Parameterizing and templating can be simply extended by adding new strategy

Dependencies

  • No dependencies

Usage example

Simple query definition example

const getUsersByScore = {
    sql: `
        SELECT id
          FROM users
          WHERE score > :score
            {{balance}};
        `,
    addons: {
        balance: {
            options: {propertyName: 'needBalance', propertyValue: true},
            sql: 'AND balance >= :minBalance',
        },
    },
};

Simple query building example

const QueryTemplater = require('query-template');

const qt = new QueryTemplater();

const sqlWithBalance = qt.processTemplates(getUsersByScore, {needBalance: true}); 
// => SELECT id FROM users WHERE score > :score AND balance >= :minBalance;

const sqlWithoutBalance = qt.processTemplates(getUsersByScore, {}); 
// => SELECT id FROM users WHERE score > :score;

Parametrizing example

const builtSQL = qt.parametrizeQuery(sqlWithBalance, {score: 10, minBalance: 150})

Result:

{
    query: 'SELECT id FROM users WHERE score > $1 AND balance >= $2',
    params: [10,150],
}

Author

Pavel Romanov -- [email protected] -- GitHub

License

Distributed under MIT License. See LICENSE for more information;