query-maker v1.0.0

Query Maker

Query maker is a simple tool with 0 dependency package for making sql queries from data in the form of objects and arrays.

Installation

$ npm install query-maker

or

$ yarn add query-maker

Examples

Select

Simple Select

const queryMaker = require('query-maker'); 
let options = {
    table:tableName
}
let result = queryMaker.getSelectQuery(options);
console.log(result)
//result 
{ 
query:'SELECT  *  FROM tableName ',
values: [] 
}

Select Some Columns

You can select some of the data by providing data Option. You have to provide an object or array of objects. Object key will be the alias and Object value will be your column name in your DB or any aggregate function.

const queryMaker = require('query-maker'); 
let options = {
    table:tableName,
     data:[{"field1":"fieldOne"}]
}
let result = queryMaker.getSelectQuery(options);
console.log(result)
//result 
{ 
query:'SELECT  fieldOne as field1  FROM tableName ',
values: [] 
}

Where Condition

For AND Operator you have to put all conditions inside an object and for OR operator you have to put condition objects inside an Array. For Example:

const queryMaker = require('query-maker'); 
let options = {
    table:tableName,
    data:[],
    condition:{"fieldOne":1}
}
let result = queryMaker.getSelectQuery(options);
console.log(result)
//result 
{ 
query:'SELECT  *  FROM tableName  WHERE fieldOne=$1',
values: [ 1 ] 
}

AND

const queryMaker = require('query-maker'); 
let options = {
    table:"tableName",
    data:[],
    condition:[{"fieldOne":2,"fieldTwo":3}]
}
let result = queryMaker.getSelectQuery(options);
console.log(result)
//result 
{ 
    query: 'SELECT  *  FROM tableName  WHERE (fieldOne=$1 AND fieldTwo=$2)',
    values: [ 2, 3 ] 
}

OR

const queryMaker = require('query-maker'); 
let options = {
    table:"tableName",
    data:[],
    condition:[{"fieldOne":2},{"fieldTwo":3}]
}
let result = queryMaker.getSelectQuery(options);
console.log(result)
//result 
{ 
    query: 'SELECT  *  FROM tableName  WHERE (fieldOne=$1) OR (fieldTwo=$2)',
    values: [ 2, 3 ] 
}

AND with OR

const queryMaker = require('query-maker'); 
let options = {
    table:"tableName",
    data:[],
    condition:[{"fieldOne":2,"fieldTwo":3},{"fieldThree":4}]
}
let result = queryMaker.getSelectQuery(options);
console.log(result)
//result 
{ 
    query:'SELECT  *  FROM tableName  WHERE (fieldOne=$1 AND fieldTwo=$2) OR (fieldThree=$3)',
    values: [ 2, 3, 4 ] }

Joins

You can match join coniditions by value and by reference. To match condition by value you have to enclose your value in ''.

Match data by reference in join conditions

const queryMaker = require('query-maker'); 
let options = {
    table:"tableName1 table1",
    data:[{"fieldOne":"table1.fieldOne"}],
    join:[{type:"inner",table:"tableName2 table2",condition:{"table2.fieldTwo":"table1.fieldOne"}}],
    condition:{"table2.fieldOne":2}
}
let result = queryMaker.getSelectQuery(options);
console.log(result)
//result 
{ 
    query:'SELECT table1.fieldOne as id FROM tableName1 table1 inner join tableName2 table2 on table2.fieldTwo=table1.fieldOne WHERE table2.fieldOne=$1',
    values: [ 2 ]
}

Match data by value in join conditions

const queryMaker = require('query-maker');
let options = {
    table:"tableName1 table1",
    data:[{"fieldOne":"table1.fieldOne"}],
    join:[{type:"left",table:"tableName2 table2",condition:{"table2.fieldOne":"'Text'"}}],
    condition:{"table2.fieldTwo":2}
}
let result = queryMaker.getSelectQuery(options);
console.log(result)
{ 
    query:'SELECT table1.fieldOne as fieldOne FROM tableName1 table1 right join tableName2 table2 on table2.fieldOne='Text' WHERE table2.fieldTwo=$1',
    values: [ 2 ] 
}

Order By

const queryMaker = require('query-maker'); 
let options = {
    data:[],
    table:"tableName",
    orderBy:['fieldOne']
}
let result = queryMaker.getSelectQuery(options);
console.log(result)
//result 
{ 
    query: 'SELECT  *  FROM tableName  Order BY fieldOne',
    values: [] 
}

Group By

const queryMaker = require('query-maker'); 
let options = {
    data:{"fieldOne":"fieldOne","count":"count(fieldTwo)"},
    table:"tableName",
    groupBy:['fieldOne']
}
let result = queryMaker.getSelectQuery(options);
console.log(result)
//result 
{ 
    query:'SELECT fieldOne as fieldOne,count(fieldTwo) as count FROM tableName  Group BY fieldOne',
    values: [] 
}

Limit

const queryMaker = require('query-maker'); 
let options = {
    data:{"fieldOne":"fieldOne"},
    table:"tableName",
    limit:10
}
let result = queryMaker.getSelectQuery(options);
console.log(result)
//result 
{ 
    query:'SELECT fieldOne as fieldOne,count(fieldTwo) as count FROM tableName  Limit 10',
    values: [] 
}

Offset

const queryMaker = require('query-maker'); 
let options = {
    data:{"fieldOne":"fieldOne"},
    table:"tableName",
    offset:10
}
let result = queryMaker.getSelectQuery(options);
console.log(result)
//result 
{ 
    query: 'SELECT fieldOne as fieldOne FROM tableName  Offset 10',
    values: [] 
}

Insert

Single Insert

const queryMaker = require('query-maker'); 
let options = {
    table:"tableName",
    data:{"fieldOne":1,"fieldTwo":2}
}
let result = queryMaker.getInsertQuery(options);
console.log(result)
//result 
{ 
    query: 'INSERT INTO tableName (fieldOne,fieldTwo) VALUES ($1,$2)',
    values: [ 1, 2 ] 
}

Multiple Insert

const queryMaker = require('query-maker'); 
let options = {
    table:"tableName",
    data:[{"fieldOne":1,"fieldTwo":2},{"fieldOne":3,"fieldTwo":4}]
}
let result = queryMaker.getInsertQuery(options);
console.log(result)
//result 
{ 
    query:'INSERT INTO tableName (fieldOne,fieldTwo) VALUES ($1,$2),($3,$4)',
    values: [ 1, 2, 3, 4 ] 
}

Update

Simple Update

const queryMaker = require('query-maker'); 
let options = {
    table:"tableName",
    data:{"fieldOne":1,"fieldTwo":2},
    condition:{"fieldOne":3}
}
let result = queryMaker.getUpdateQuery(options);
console.log(result)
//result 
{ 
    query:'UPDATE tableName SET fieldOne=$1,fieldTwo=$2 WHERE fieldOne=$3',
    values: [ 1, 2, 3 ] 
}

Delete

Simple Delete

const queryMaker = require('query-maker'); 
let options = {
    table:"tableName",
    condition:{"fieldOne":3}
}
let result = queryMaker.getDeleteQuery(options);
console.log(result)
//result 
{ query: 'DELETE FROM tableName WHERE fieldOne=$1',
  values: [ 3 ] 
}

Options

Insert Options

Select Options

Join Options

Update Options

Delete Options