#Learn sql with postgresql tutorial how to
#Learn sql with postgresql tutorial install
#Learn sql with postgresql tutorial update
#Learn sql with postgresql tutorial software

PostgreSQL has various data types including char, date, double, JSON, money, numeric, smallint, serial, text, time, and timestamp, each with its own specific use and characteristics.

#Learn sql with postgresql tutorial how to

The video discusses how to connect to a PostgreSQL database, the dangers of deleting a database, and the process of creating a table with columns and data types.

The video demonstrates how to connect to a PostgreSQL database using the command line interface (PSQL) and the graphical user interface client (PG admin), as well as how to create a new database.

#Learn sql with postgresql tutorial install

To download and install PostgreSQL on Windows, go to the official website, select the latest version, download the installer, select the desired components, set a password for the super user, and complete the installation process.Data in PostgreSQL is stored in tables, which are formed by columns and rows, and these tables can have relationships with each other in a relational database, making it easier to manage and query data PostgreSQL is an open source and popular choice for relational database management due to its advanced features and lack of licensing fees.PostgreSQL is an open-source, high-performance database that can be accessed and manipulated using SQL, allowing users to store, retrieve, and manipulate data, and it is widely used in various applications such as Facebook and eBay.PostgreSQL is an open-source, high-performance database used by applications like Facebook and eBay, and it can be accessed and manipulated using SQL it is installed on Windows by downloading the latest version, selecting components, setting a password, and completing the installation process data in PostgreSQL is stored in tables with columns and rows, and relationships can be formed between tables in a relational database connecting to a PostgreSQL database can be done through the command line interface or graphical user interface client creating a table involves specifying columns and data types PostgreSQL has various data types for different uses. 📅 The extract function in PostgreSQL allows you to extract specific values from a date, such as the year, month, day, day of the week, or century.🤔 The 'coalesce' keyword in PostgreSQL is a powerful tool that allows you to set a default value for a column that is null.💡 Comparison operators in PostgreSQL allow us to perform arithmetic operations, comparisons, bitwise, and logical operations, making it a versatile tool for data filtering and analysis.🚀 Learning SQL and databases is the foundation for creating backend applications and processing information, allowing you to provide clients with services they can use.

🔗 By using foreign key relationships, we can connect tables based on a primary key and ensure that a person can only have one car and a car can only belong to one person.

#Learn sql with postgresql tutorial update

💡 The update command in PostgreSQL allows for updating a column or multiple columns based on a WHERE clause, providing control over what is actually being updated.

🔄 The primary key is important when deleting records from a table, as it allows for the unique identification of a record and should be used in the WHERE clause for deletion.

💪 Check constraints in PostgreSQL are flexible and can be used to enforce any condition you want, making them a powerful tool for data validation.

📝 Using the 'select' statement in PostgreSQL allows you to retrieve specific data from a table, providing flexibility in data analysis and manipulation.

🚗 The example given in the transcript demonstrates how to create a new table called 'car' using mock data, with fields like ID, make, model, and price, showcasing the practical application of PostgreSQL in managing and analyzing data related to cars.

#Learn sql with postgresql tutorial software

💡 Postgres is a popular open-source database used by many startups for their backend applications, making it important for software developers to learn and use for their own projects and careers.

Key insights Importance and Application of PostgreSQL