PostgreSQL Extract date from timestamp
PostgreSQL provides many functions and operators for built-in data types. This tutorial will give an example of extracting the date from a timestamp in PostgreSQL or Postgres.
CAST
Extracting the date from a timestamp using the operator in PostgreSQL
In PostgreSQL, CAST
a function converts a value of one data type to another. We can use it to extract the date from a timestamp.
select CAST ('2021-11-03 13:10:00' as date);
Output:
date
------------
2021-11-03
Another way to convert is to use the range resolution ::
operator and the result type which is in this case date.
select '2021-11-03 13:10:00'::date;
Output:
date
------------
2021-11-03
DATE
Extract date from timestamp using function in PostgreSQL
You can implement DATE
the function to extract only the date from the timestamp.
select date ('2021-11-03 13:10:00');
Output:
date
------------
2021-11-03
For reprinting, please send an email to 1244347461@qq.com for approval. After obtaining the author's consent, kindly include the source as a link.
Related Articles
Terminate the PostgreSQL connection
Publish Date:2025/04/11 Views:199 Category:PostgreSQL
-
In this article, we will learn how to terminate a PostgreSQL session. Any open connections are run by background processes or tasks, PSQL which may no longer exist despite exiting the user interface or command line tool. Use ps -ef or grep
Single query to rename and change column type in PostgreSQL
Publish Date:2025/04/11 Views:166 Category:PostgreSQL
-
This article describes how to rename a column and change its type in PostgreSQL using only a single query. Renaming and changing column types in MySQL In MySQL , if you want to change the column type and rename it, you can use a simple stat
Joining columns using Select in PostgreSQL
Publish Date:2025/04/11 Views:176 Category:PostgreSQL
-
MySQL PostgreSQL is an object-relational database system, which means it can support more complex data types than its competitors . Today we will learn how to use SELECT the operator to join the columns of a table. Using operators to || joi
Using CASE in PostgreSQL
Publish Date:2025/04/11 Views:124 Category:PostgreSQL
-
This article shows how to use the statement in PostgreSQL CASE . CASE How to use the statement in PostgreSQL case Statements are similar to those in general-purpose programming languages if-else . But in SQL, if you want to write IF-ELSE ,
Using NOT IN with subqueries in PostgreSQL
Publish Date:2025/04/11 Views:93 Category:PostgreSQL
-
NOT IN The inverts the result of NOT simply using IN the operator. NOT IN The right side of the operator must have a subquery in which multiple columns are returned to check whether the expression matches the data. NOT IN Tends to return tr
Using variables in PostgreSQL
Publish Date:2025/04/11 Views:171 Category:PostgreSQL
-
This article will demonstrate how we can declare and assign values to variables in PostgreSQL. In PostgreSQL, DECLARE variables are declared using Often you will need variables in your PL/SQL scripts. In DECLARE the section called , y
Connect to PostgreSQL using a password
Publish Date:2025/04/11 Views:171 Category:PostgreSQL
-
This article shows various ways to connect to PostgreSQL using a password. It can be through the command line, pgpass a file, PGPASSWORD an environment variable or a connection string. Connecting to PostgreSQL with a password using the comm
Deleting a database in PostgreSQL via PSQL
Publish Date:2025/04/11 Views:166 Category:PostgreSQL
-
There are two ways to access PostgreSQL objects and databases on your system. One is through an interface, such as a graphical interface like PGADMIN, and the other is the basic command line tool psql. Today, we will look at DROP DATABASE t
Using the database in PostgreSQL
Publish Date:2025/04/11 Views:132 Category:PostgreSQL
-
This article demonstrates connecting to a database, creating a new database, and creating a table in PostgreSQL. Available databases in PostgreSQL You can run the following command after opening the Postgres command line to view all availab