Postgres and Open Source Experts

To concatenate multiple columns in PostgreSQL, the CONCAT() function is used. Moreover, we can also use the concatenation operator “||”.

The NOT LIKE operator looks for the specified character/text/string in the database and returns those records that do not contain that specified string/pattern.

In PostgreSQL, the error “function ntile() Does Not Exist” basically arises when we do not provide any argument to the ntile() function.

To create a tablespace in PostgreSQL, the “CREATE TABLESPACE” statement is used with the “LOCATION” clause. It refers to the location on the disk where all the data for a database is stored.

The REAL data type is a numeric data type used to store the single-precision floating point numbers. It requires fewer storage constraints as compared to the DOUBLE PRECISION data type.

The time can be extracted from the timestamp in PostgreSQL by typecasting the timestamp to time. This helps us analyze the data based on the time.

In PostgreSQL, users can get the first, last, and any nth values from each partition using the FIRST_VALUE(), LAST_VALUE(), and NTH_VALUE(), respectively.

First, establish a connection with the postgres database from psql, after that, you can run all the PostgreSQL queries like DDL and DML in psql in similar ways as you run them in pgAdmin.

Sometimes we need to remove all the spaces from the column in PostgreSQL. This thing is possible in PostgreSQL using a function named “REPLACE()”. In this blog, we will be discussing the method using which we can remove all the white spaces present in the column. Let’s get started with the article.

How to Remove All the Spaces From a Column in PostgreSQL?

We can remove the white …

The Postgres json_extract_path() function and json_extract_path_text() function both are JSON functions that are used to extract the nested values from JSON values specified at a certain path.