PostgreSQL provides different built-in commands and queries to get the list of all the tables, such as the “\dt” command, “pg_tables”, “information_schema”, etc.
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PostgreSQL IS NULL Operator/Condition
In Postgres, the IS NULL operator tests whether an expression/column contains a null value. It can be used with different statements, such as SELECT, UPDATE, etc.
PostgreSQL TIMESTAMP: Timestamp Without Time Zone Data Type
The PostgreSQL “TIMESTAMP” or “TIMESTAMP WITHOUT TIME ZONE” data type stores a timestamp value without the time zone information.
PostgreSQL TIMESTAMPTZ: Timestamp With Time Zone Data Type
The PostgreSQL “TIMESTAMPTZ” or “TIMESTAMP With TIME ZONE” data type is used to store a timestamp value that includes the time zone information.
TO_TIMESTAMP: How to Convert a String to TIMESTAMP in PostgreSQL
The TO_TIMESTAMP() in Postgres is a built-in function for converting a string to a timestamp data type. Users can easily manipulate and analyze DateTime information using this function.
IS NOT NULL Operator/Condition in PostgreSQL
In Postgres, the IS NOT NULL operator tests whether an expression or a column contains a non-null value. It is used in a SELECT statement to return only non-null records from a column.
PostgreSQL - How to Insert Data Into a Table Using Python
Use the “connect()” method of “psycopg” module to establish a connection with the Postgres database using python. Next, create a cursor object and execute the INSERT query via the cursor object.
Setting Up an SSH Connection
The Secure Shell Protocol (SSH) provides IT professionals with a secure method to remotely connect to client environments. SSH typically uses a password or public-key method to encrypt connections and authenticate network devices. This tutorial will focus on establishing an SSH connection for data transfer between the postgres users on two Ubuntu 22.04 LTS instances.
How to Convert the Case of a String in PostgreSQL
In PostgreSQL, the UPPER(), LOWER(), and INITCAP() functions are used for letter case conversion.
PostgreSQL SPLIT_PART Function: Extracting Data From a String
The SPLIT_PART() function accepts three arguments: a string, a delimiter/separator, and a position. Consequently, it retrieves the extracted data from the given string.
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