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doSQL

Easy and intuitive way to do queries to a MySQL database using only JSON.

Install

Install doSQL using NPM:

npm install --save dosql

Usage

Connect(obj)

Use this for connect to a database. For example:

//Import
var db = require('dosql');
 
//Connect to database
db.Connect({host: '<YOUR_HOST>', user: '<YOUR_USER>', pass: '<YOUR_PASS>', db: '<YOUR_DATABASE>'});

Do(obj, callback)

Run a query defined by obj object, and then call your callback function with the results.

The obj object must contain the next keys:

• in: string with the table where you want to do the query.
• do: action for do. It can be select, insert, delete or update.

callback will get only argument, called result:

• result will be null if an error occurred running the query.
• result will be an array if no error occurred.

Examples

For select data, you can optionally add a where key, containing an object with the keys that the rows must satisfy. On version 0.2.1, the where argument can be a string for a complex query.

//Example 1 - Select all rows from table
 
// SELECT * FROM yourtable
db.Do({in: 'yourtable', do: 'select'}, function(result){
 
  //result is an array containing the selected rows
  //If there was a problem doing the query, result will be NULL    
 
  //Do something with "result"
 
});

//Example2 - Select only rows that satisfy the conditions
 
// SELECT * FROM yourtable WHERE key1="value1" AND key2="value2";
db.Do({in: 'yourtable', do: 'select', where: {'key1': 'value1', 'key2': 'value2'}}, function(result){
 
  //result is an array containing the selected rows
  //If there was a problem doing the query, result will be NULL    
 
  //Do something with "result"
 
});

For insert data, you must add a values key. It can be an object with the values for insert into your table, or an array with some objects. If no error occurred, the result variable will be an array with the inserted rows.

//Example 1 - Insert only one row to your table
 
// INSERT INTO yourtable (k1, k2, k3) VALUES ("v1", "v2", "v3");
db.Do({in: 'yourtable', do: 'insert', values: {k1:'v1',k2:'v2',k3:'v3'}}, function(result){
 
  //result will be NULL if something went wrong. Else, result will be an empty array.
 
});

//Example 2 - Insert two rows to your table
 
// INSERT INTO yourtable (k1, k2, k3) VALUES ("v1", "v2", "v3"),("v4", "v5", "v6");
var val = [{k1: 'v1', k2: 'v2', k3: 'v3'},{k1: 'v4', k2: 'v5', k3: 'v6'}];
db.Do({in: 'yourtable', do: 'insert', values:val}, function(result){
 
  //result will be NULL if something went wrong. Else, result will be an empty array.
 
});

For update rows, you must add a set and where keys.

//Example1 - Update some rows
 
// UPDATE yourtable SET key1="va1" WHERE key2="va2"
db.Do({in: 'yourtable', do: 'update', set: {key1: 'va1'}, where: {key2: 'va2'}}, function(result){
 
  //result will be NULL if something went wrong. Else, result will be an empty array
 
});

For delete rows, you must add a where key:

//Example1 - Delete some rows
 
// DELETE yourtable WHERE key="value"
db.Do({in: 'yourtable', do: 'delete', where: {key: 'value'}}, function(result){
 
  //result will be NULL if something went wrong. Else, result will be an empty array
 
});

Tip

You can use if(result) for check if something went wrong. For example,

db.Do({in: 'yourtable', do: 'select'}, function(result){
 
  //Check result
  if(result)
  {
    //All is OK, you can now access to the rows
  }
  else
  {
    //Oups, something went wrong. See the Node logs
  }
});

License

doSQL is under the MIT license.