Tag: PostgreSQL
PostgreSQL current_timestamp function returns the current date and time with the time zone. Syntax of the current_timestamp function in PostgreSQL current_timestamp( [ precision ] ) Parameters...
The current_time function in PostgreSQL returns the current time with the time zone. Syntax of the current_time function in PostgreSQL current_time( [ precision ] ) Parameters and function...
The current_date function in PostgreSQL returns the current date. Syntax of current_date function in PostgreSQL current_date Parameters and function argumentsThere are no parameters or...
The PostgreSQL function age returns the number of years, months, and days between two dates. Syntax of the function age in PostgreSQL age( [date1,] date2 ) Parameters and function...
PostgreSQL Alias can be used to create a temporary name for tables or columns. Column aliases are used to make it easier to read column headers in a set of results.Table aliases are used to...
Can you place comments in your SQL statements in PostgreSQL? These comments can appear in one line or cover several lines. Let's see how to do that.There are two syntaxes that you can use to...
In this tutorial, you will learn how to declare variables in PostgreSQL using syntax and examples. What is a variable in PostgreSQL? In PostgreSQL, a variable allows a programmer to temporarily...
Below is a list of data types available in PostgreSQL, which includes string, numeric, and date/time type. String data types Below are String data types in PostgreSQL :Syntax of data...
You will study in detail the process of installing PostgreSQL 12 on Windows 10.In addition, we will also install and configure pgAdmin 4, which is a standard and free graphical tool for...
We will take a closer look at how to install PostgreSQL 11 on Windows, you will learn where to download PostgreSQL 11 for Windows, how the installation process looks like and how to connect to...
There are official ratings and other analytical data that show DBMS popularity.Some ratings are based on the frequency of reference in search engine queries, ie, if people are more often looking...
IT departments work with a meager budget. Therefore, cost-cutting will allow the company not only to stay afloat, but also to direct the saved money to development.To use the available budget...
SQL Indexes - The index is a method of performance tuning that allows for much faster retrieval of records. The index creates a record for each value that appears in the indexed columns. Each...
PostgreSQL data types - PostgreSQL supports a rich palette of different data types, among which can be conventionally divided into subgroups: numeric, character, logical, date and time, binary...
The CREATE USER PostgreSQL statement creates a database account that allows you to log into a PostgreSQL database. Syntax for CREATE USER operator in PostgreSQL CREATE USER user_name [...
To create in PostgreSQL tables, the CREATE TABLE command is used, after which the table name is specified. Also with this command, you can use a number of operators that define the table columns...