https://github.com/satyammittal/mini-sql-engine

a mini sql engine which will run a subset of SQL Queries using ​ command line interface​ .
https://github.com/satyammittal/mini-sql-engine

database-system mini-sql-engine sql-query

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a mini sql engine which will run a subset of SQL Queries using ​ command line interface​ .

• Host: GitHub
• URL: https://github.com/satyammittal/mini-sql-engine
• Owner: satyammittal
• Created: 2018-01-28T21:44:11.000Z (about 8 years ago)
• Default Branch: master
• Last Pushed: 2019-02-03T11:59:06.000Z (about 7 years ago)
• Last Synced: 2025-02-12T01:54:49.200Z (about 1 year ago)
• Topics: database-system, mini-sql-engine, sql-query
• Language: Python
• Size: 107 KB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
# MINI-SQL-ENGINE

#### Description

a mini sql engine which will run a subset of SQL Queries using ​ command line interface​ .

Type of Queries implemented here:​

    Select all records : Select * from table_name;

    Aggregate functions: Simple aggregate functions on a single column. Sum, average, max and min. They will be very trivial given that the data is only numbers: select max(col1) from table1;

    Project Columns(could be any number of columns) from one or more tables : Select col1, col2 from table_name;

    Select/project with distinct from one table : select distinct(col1), distinct(col2) from table_name;

    Select with where from one or more tables: select col1,col2 from table1,table2 where col1 = 10 AND col2 = 20; a. In the where queries, there would be a maximum of one AND/OR operator with no NOT operators.

    Projection of one or more(including all the columns) from two tables with one join condition :

    a. select * from table1, table2 where table1.col1=table2.col2; b. select col1,col2 from table1,table2 where table1.col1=table2.col2;

#### Credits

#### [moz_sql_parser]: https://github.com/mozilla/moz-sql-parser

## How to Run

`python main.py "{query}"`

example: `python main.py "select * from table1;"`