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- #SQLITE TUTORIAL HOW TO#
- #SQLITE TUTORIAL INSTALL#
- #SQLITE TUTORIAL FULL#
- #SQLITE TUTORIAL SOFTWARE#
Using Python to Interact with an SQLite Database I strongly recommend that you work through the first few pages on that site. One great place to get this practice is sqlbolt. You will need to get lots of practice with basic SQL statements in order to become proficient.
#SQLITE TUTORIAL FULL#
Note that records are represented by full rows, while attributes are represented by “cells” (if we visualize a database tables as similar to spreadsheets), and the name of the attribute is like the column heading.
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Attribute – a property or aspect of a thing stored in a database table.There are quite a few terms and concepts to learn, but for now a couple of crucial ones you need are: One thing that can cause confusion when first learning about databases is the terminology. Gives just the suit_symbol and score for each of the rows it finds where the suit is hearts. SELECT suit_symbol, score FROM cards WHERE suit = "hearts" You can be more specific, and instead of selecting all fields, you can select specific fields. SELECT * FROM cards WHERE suit = "hearts" Īs you can see, this selects all the columns from the cards table for each row in which the suit is hearts. For example, in the “Execute SQL” tab, run the following command: Now that you have a database with some data in it, you can use the SELECT statement to query your database to obtain results based on specific criteria. Selecting Data from a Database with SQLite Now that you have some data in your database, you can explore it using the Browse Data tab. Comments in SQL are created using -, so - Diamonds is a comment, for the benefit of humans.The name, suit etc inside the brackets are the attributes into which the values will be stored, so A for name, diamonds for suit etc. does more or less what it says on the tin. INSERT INTO cards (name, suit, suit_symbol, score) VALUES.At this stage you needn’t worry too much about the syntax, but just get a feel for the big picture. This used the INSERT SQL command to put data into the cards table. Go back to the Execute SQL tab, select and delete what is there already and instead paste the following SQL commands: INSERT INTO cards (name, suit, suit_symbol, score) VALUES Now we will add the data for a deck of playing cards into the table we just created. This will create the structure for a table where will store a representation of a deck of playing cards. Now goto the the tab labelled Execute SQL and type/paste in the following SQL commands (typing will make you learn better): CREATE TABLE cards ( Using DB Browser for SQLite, create a new database from the file menu, and call it cards.db. We will then make a start at working with SQL via Python. In this article we will take a look at some basic SQL to set the scene for interacting with a database using Python.
#SQLITE TUTORIAL HOW TO#
Then there is how to work with these in Python. The first is the basics of databases and SQL. In order to work with SQL in Python, you need to learn two different topics.
#SQLITE TUTORIAL INSTALL#
You shroud download and install it now if you want to follow along with this article. A great one is available here: db browser for SQLite. However, in order to really understand what is happening as you learn SQL, is helps to have a way to visualise and interact with your data using a Graphical User Interface (GUI).
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You can get started with SQLite in Python without any setup, as SQLite comes as as standard with a Python installation (at the time of writing, current version 3.8). The commands used by SQLite are very similar to those used by other versions and it will be easy to adapt if you need to later on. Many flavours of SQL exist, yet there is a great deal of similarity between the most common versions. SQL stands for Structured Query Language and is used to communicate with databases. This means you can easily write programs which require a database with minimal setup. SQLite is a library that provides a lightweight, self-contained database that stores data as a simple file without the need for a a client-server architecture. In this article we will look at how to work with databases in Python using SQLite.
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#SQLITE TUTORIAL SOFTWARE#
Working with databases is a fundamental skill in software development.