EDUCBA

EDUCBA

MENUMENU
  • Free Tutorials
  • Free Courses
  • Certification Courses
  • 360+ Courses All in One Bundle
  • Login
Home Data Science Data Science Tutorials PostgreSQL Tutorial PostgreSQL Timestamp with Timezone
Secondary Sidebar
PostgreSQL Tutorial
  • Advanced
    • PostgreSQL Schema
    • PostgreSQL ANY
    • Entity Framework PostgreSQL
    • PostgreSQL UPSERT
    • PostgreSQL ON CONFLICT
    • PostgreSQL Port
    • Postgres List Schemas
    • PostgreSQL Update
    • PostgreSQL Drop Schema
    • PostgreSQL VARCHAR
    • PostgreSQL Case Insensitive
    • PostgreSQL Timestamp with Timezone
    • PostgreSQL Array Functions
    • Array in PostgreSQL
    • PostgreSQL DDL
    • PostgreSQL List Users
    • Postgres Default User
    • Postgres add user
    • PostgreSQL User Password
    • PostgreSQL log_statement
    • PostgreSQL String Functions
    • PostgreSQL? String Contains
    • PostgreSQL Compare Strings
    • PostgreSQL Text Search
    • PostgreSQL TEXT
    • PostgreSQL?String Array
    • PostgreSQL where in array
    • PostgreSQL Constraints
    • PostgreSQL UNIQUE Constraint
    • PostgreSQL CHECK Constraint
    • PostgreSQL INTERSECT
    • PostgreSQL Like
    • Cursors in PostgreSQL
    • PostgreSQL UNION ALL
    • Indexes in PostgreSQL
    • PostgreSQL Index Types
    • PostgreSQL REINDEX
    • PostgreSQL UNIQUE Index
    • PostgreSQL Clustered Index
    • PostgreSQL DROP INDEX
    • PostgreSQL DISTINCT
    • PostgreSQL FETCH
    • PostgreSQL RAISE EXCEPTION
    • PostgreSQL Auto Increment
    • Sequence in PostgreSQL
    • Wildcards in PostgreSQL
    • PostgreSQL Subquery
    • PostgreSQL Alias
    • PostgreSQL LIMIT
    • PostgreSQL Limit Offset
    • PostgreSQL LAG()
    • PostgreSQL LEAD()
    • PostgreSQL Table
    • Postgres Show Tables
    • PostgreSQL?Describe Table
    • PostgreSQL?Lock Table
    • PostgreSQL ALTER TABLE
    • Postgres Rename Table
    • PostgreSQL List Tables
    • PostgreSQL TRUNCATE TABLE
    • PostgreSQL Table Partitioning
    • Postgres DROP Table
    • PostgreSQL Functions
    • PostgreSQL Math Functions
    • PostgreSQL Window Functions
    • Aggregate Functions in PostgreSQL
    • PostgreSQL Primary Key
    • Foreign Key in PostgreSQL
    • PostgreSQL Procedures
    • PostgreSQL Stored Procedures
    • PostgreSQL Views
    • PostgreSQL Materialized Views
    • Postgres Create View
    • PostgreSQL Triggers
    • PostgreSQL DROP TRIGGER
    • PostgreSQL Date Functions
    • PostgreSQL TO_DATE()
    • PostgreSQL datediff
    • PostgreSQL Timestamp
    • PostgreSQL CURRENT_TIMESTAMP()
    • PostgreSQL Notify
    • PostgreSQL LENGTH()
    • PostgreSQL blob
    • PostgreSQL Median
    • PostgreSQL kill query
    • PostgreSQL Formatter
    • PostgreSQL RANK()
    • PostgreSQL Select
    • PostgreSQL Average
    • PostgreSQL DATE_PART()
    • PostgreSQL EXECUTE
    • PostgreSQL COALESCE
    • PostgreSQL EXTRACT()
    • PostgreSQL Sort
    • PostgreSQL TO_CHAR
    • PostgreSQL?Interval
    • PostgreSQL Number Types
    • PostgreSQL ROW_NUMBER
    • Alter Column in PostgreSQL
    • PostgreSQL Identity Column
    • PostgreSQL SPLIT_PART()
    • PostgreSQL CONCAT()
    • PostgreSQL replace
    • PostgreSQL?TRIM()
    • PostgreSQL MAX
    • PostgreSQL DELETE
    • PostgreSQL DELETE JOIN
    • PostgreSQL Float
    • PostgreSQL?OID
    • PostgreSQL log
    • PostgreSQL REGEXP_MATCHES()
    • PostgreSQL?MD5
    • PostgreSQL NOW()
    • PostgreSQL RANDOM
    • PostgreSQL round
    • PostgreSQL Trunc()
    • PostgreSQL TIME
    • PostgreSQL IS NULL
    • PostgreSQL CURRENT_TIME
    • PostgreSQL MOD()
    • Postgresql Count
    • PostgreSQL Datetime
    • PostgreSQL MIN()
    • PostgreSQL age()
    • PostgreSQL?enum
    • PostgreSQL?OR
    • PostgreSQL Wal
    • PostgreSQL?NOT IN
    • PostgreSQL SET
    • PostgreSQL Current Date
    • PostgreSQL? Compare Date
    • PostgreSQL SERIAL
    • PostgreSQL UUID
    • PostgreSQL Merge
    • PostgreSQL Database
    • PostgreSQL?Clone Database
    • PostgreSQL Copy Database
    • PostgreSQL Show Databases
    • PostgreSQL Restore Database
    • PostgreSQL DROP DATABASE
    • PostgreSQL ALTER DATABASE
    • Postgres DROP Database
    • Postgres Dump Database
    • PostgreSQL OFFSET
    • PostgreSQL GRANT
    • PostgreSQL COMMIT
    • PostgreSQL ROLLUP
    • PostgreSQL JSON
    • EXPLAIN ANALYZE in PostgreSQL
    • PostgreSQL Temporary Table
    • PostgreSQL Show Tables
    • PostgreSQL cluster
    • PostgreSQL Replication
    • PostgreSQL Logical Replication
    • PostgreSQL? flush privileges
    • PostgreSQL Tablespaces
    • CAST in PostgreSQL
    • PostgreSQL CTE
    • hstore in PostgreSQL
    • PostgreSQL Encryption
    • PostgreSQL DECODE()
    • PostgreSQL Vacuum
    • PostgreSQL EXCLUDE
    • Postgres Change Password
    • Postgres Delete Cascade
    • PostgreSQL EXCEPT
    • PostgreSQL Roles
    • PostgreSQL Link
    • PostgreSQL? Partition
    • PostgreSQL? column does not exist
    • PostgreSQL Log Queries
    • PostgreSQL escape single quote
    • PostgreSQL Query Optimization
    • PostgreSQL? Character Varying
    • PostgreSQL? Transaction
    • PostgreSQL Extensions
    • PostgreSQL Import CSV
    • PostgreSQL Client
    • PostgreSQL caching
    • PostgreSQL Incremental Backup
    • PostgreSQL Backup
    • PostgreSQL JSON vs JSONNB
    • PostgreSQL JDBC Driver
    • PostgreSQL Interview Questions
    • PostgreSQL drop foreign key
    • PostgreSQL export database
    • PostgreSQL Export CSV
    • PostgreSQL Performance Tuning
    • PostgreSQL Unnest
    • PostgreSQL show version
    • PostgreSQL Full Text Search
    • PostgreSQL max connections
    • Postgres Switch Database
    • PostgreSQL STRING_AGG()
    • PostgreSQL Date Format
    • PostgreSQL SUM()
    • PostgreSQL FORMAT
    • BETWEEN in PostgreSQL
    • PostgreSQL EXISTS
    • PostgreSQL Synonyms
    • PostgreSQL REGEXP_REPLACE
    • PostgreSQL group by month
    • UNION in PostgreSQL
    • PostgreSQL POSITION()
  • Basic
    • What is PostgreSQL
    • PostgreSQL Features
    • How to Install PostgreSQL
    • PostgreSQL Versions
    • PostgreSQL Architecture
    • PostgreSQL GUI
    • Postgres Command-Line
    • PostgreSQLTrigger Functions
    • PostgreSQL jsonb
    • PostgreSQL Table Schema
    • PostgreSQL group by day
    • Postgres ALTER TABLE
    • Postgres Connect to Database
    • PostgreSQL Numeric
    • PostgreSQL dblink
    • PostgreSQL Variables
    • PostgreSQL Data Types
    • PostgreSQL NOT NULL
    • PostgreSQL Integer
    • PostgreSQL Boolean
    • PostgreSQL BIGINT
    • PostgreSQL NULLIF
    • PostgreSQL Administration
    • PostgreSQL Commands
    • PostgreSQL Superuser
    • PostgreSQL ALL
    • PostgreSQL Operators
    • PostgreSQL IN Operator
    • Postgres like query
    • PostgreSQL encode
    • PostgreSQL Cheat Sheet
  • Control Statement
    • PostgreSQL IF Statement
    • PostgreSQL if else
    • PostgreSQL CASE Statement
    • PostgreSQL LOOP
    • PostgreSQL For Loop
    • PostgreSQL While Loop
  • Joins
    • Joins in PostgreSQL
    • PostgreSQL Inner Join
    • PostgreSQL Outer Join
    • LEFT OUTER JOIN in PostgreSQL
    • PostgreSQL FULL OUTER JOIN
    • PostgreSQL LEFT JOIN
    • PostgreSQL Full Join
    • PostgreSQL Cross Join
    • PostgreSQL NATURAL JOIN
    • PostgreSQL UPDATE JOIN
  • Queries
    • PostgreSQL Queries
    • PostgreSQL INSERT INTO
    • PostgreSQL WHERE Clause
    • PostgreSQL WITH Clause
    • PostgreSQL ORDER BY
    • PostgreSQL? ORDER BY? Random
    • PostgreSQL ORDER BY DESC
    • PostgreSQL GROUP BY
    • PostgreSQL group_concat
    • PostgreSQL HAVING
    • PostgreSQL Recursive Query

PostgreSQL Timestamp with Timezone

PostgreSQL Timestamp with Timezone

Introduction to PostgreSQL Timestamp with Timezone

PostgreSQL timestamp with timezone is defined as showing timestamp with timezone, which we have defined to the database server. In PostgreSQL, there are two data types of timestamp available, i.e., timestamp with timezone and timestamp without a timezone; the timestamptz is defined as timestamp with timezone. Timestamptz is a zone-aware data type of date and time, the default timezone of the PostgreSQL database is UTC which means when we insert any value in the timestamptz data type column, it will automatically convert into UTC. When we query timestamptz to table the same time, the UTC value again converts back to the time. In this topic, we are going to learn about PostgreSQL Timestamp with Timezone.

Syntax

Below is the syntax of timestamp with timezone in PostgreSQL.

Start Your Free Data Science Course

Hadoop, Data Science, Statistics & others

All in One Data Science Bundle(360+ Courses, 50+ projects)
Python TutorialMachine LearningAWSArtificial Intelligence
TableauR ProgrammingPowerBIDeep Learning
Price
View Courses
360+ Online Courses | 50+ projects | 1500+ Hours | Verifiable Certificates | Lifetime Access
4.7 (86,700 ratings)

Create a table to define the data type of column as timestamp with timezone

Create table name_of_table (name_of_column1 data_type, name_of_column2 TIMESTAMPTZ, name_of_column3 data_type, …, name_of_columnN data_type);

Select timestamp with timezone

Select 'Date time':: timestamptz as "Select timestamp with time zone in PostgreSQL";

OR

select date time::timestamptz;

OR

SELECT 'Date time':: timestamptz at time zone 'timezone' as "name_of_timezone";

Set timezone

SET TIME ZONE ‘name_of_timezone’;

Below is the parameter description syntax of timestamp with timezone in PostgreSQL.

  • Select –This is defined as a select timestamp with a timezone in PostgreSQL. We can select the same from the table column as well as from system time.
  • Create table –create the table by defining data type as timestamp with time zone to the specified column.
  • Name of the table – It is used to define the table name, which is uniquely identified from which table column we have defined data type as timestamp with the time zone in PostgreSQL.
  • Name of the table – This is defined as the name of the column from which table column we have defining data type as timestamp with the time zone in PostgreSQL.
  • Data type –This is defined as the defined data type of column at the time of table creation in PostgreSQL. We can define any data type to the column at the time of table creation.
  • Set time zone –This is defined as a set time zone to the database server. We can set the time zone of the server by using the set time zone command.
  • Date and time –We are using date and time at the time of setting timestamp with timezone in PostgreSQL.

How Timestamp with Timezone works in PostgreSQL?

Below is the working of timestamp with timezone in PostgreSQL.

We can use a timestamp data type in PostgreSQL by using it with and without the time zone. If we want to use a without time zone, we need to use a timestamp data type; if we want to use timestamp with a time zone, we need to use a timestamp data type.

We can see the timezone of the server by using the show timezone command. The below example shows that how to see server timezone in PostgreSQL are as follows.

showtime zone;

PostgreSQL Timestamp with Timezone output 1

In the above example, the current timestamp with timezone is Asia/Kolkata; we can change the same by using the set time zone command.

There is an 1187 timezone available in PostgreSQL version 10. Below is the example of the timezone which was available in PostgreSQL.

select count(*) from pg_timezone_names;
select * from pg_timezone_names limit 10;

PostgreSQL Timestamp with Timezone output 2

The above example shows that the pg_timezone_names catalog table contains all timezone names that were available in PostgreSQL version 10.

It will contain the timezone name and its abbreviation, which was used in PostgreSQL.

The timestamp with time zone data type storage size is 8 bytes. The below example shows the size of the timestamptz data type in PostgreSQL.

SELECT typname, typlen FROM pg_type WHERE typname ~ '^timestamptz';

PostgreSQL Timestamp with Timezone output 3

PostgreSQL timestamp with timezone data type is stored in the UTC value. Therefore, the value of timestamp with time zone data type is changed after inserting the date and time into the table.

But timestamp without timezone data type value is not changed after inserting it into the table.

The example below shows that timezone is automatically added while defining the timestamptz data type to the column.

insert into timestamp_test values ('2016-06-22 19:10:25');
select * from timestamp_test;
\d+ timestamp_test;

PostgreSQL Timestamp with Timezone output 4

Examples of PostgreSQL Timestamp with Timezone

Below is an example of timestamp with the time zone in PostgreSQL.

Example #1 – Create a table to define timestamptz data type to the column

The below example shows that create a table and define the timestamptz data type to the column.

We have defining timestamp with time zone data type to the date and date_time column.

create table timestamp_timezone (id int, date timestamptz, date_time timestamptz);
\d+ timestamp_timezone;

output 5

Example #2 – Insert date into the timestamptz datatype column

The below example shows that insert date into the timestamptz data type column.

insert into timestamp_timezone values (1, '2020-07-01 19:10:25', '2020-07-02 19:10:25');
insert into timestamp_timezone values (2, '2020-07-01 19:10:25', '2020-07-02 19:10:25');
select * from timestamp_timezone;

output 6

Example #3 – Change the timezone

The below example shows that change the timezone of the database in PostgreSQL.

In the below example, we have to change the timezone from Asia/Calcutta to UTC.

show timezone;
set time zone 'UTC';
show timezone;

output 7

Example #4 – Select timestamp with the timezone of date

The below example shows that select the timestamp with the timezone of date in PostgreSQL.

In the below example, we have selected timestamp with timezone for the date of ‘2020-07-01 19:10:25’.

SELECT '2020-07-01 19:10:25':: timestamptz as "Timestamp with timezone";
SELECT '2020-07-01 19:10:25':: timestamptz;

output 8

Conclusion

There are two types of timestamp data types available in PostgreSQL, i.e., timestamp and timestamptz. Timestamp with timezone is defined as a value of column with time zone format. There is an 1187 timezone available in PostgreSQL version 10. PostgreSQL database is used the UTC zone as a default time zone.

Recommended Articles

This is a guide to PostgreSQL Timestamp with Timezone. Here we discuss How Timestamp with Timezone works in PostgreSQL along with the Examples. You may also have a look at the following articles to learn more –

  1. PostgreSQL REINDEX
  2. hstore in PostgreSQL
  3. PostgreSQL replace
  4. PostgreSQL Trunc()
Popular Course in this category
PostgreSQL Course (2 Courses, 1 Project)
  2 Online Courses |  1 Hands-on Project |  7+ Hours |  Verifiable Certificate of Completion
4.5
Price

View Course
0 Shares
Share
Tweet
Share
Primary Sidebar
Footer
About Us
  • Blog
  • Who is EDUCBA?
  • Sign Up
  • Live Classes
  • Corporate Training
  • Certificate from Top Institutions
  • Contact Us
  • Verifiable Certificate
  • Reviews
  • Terms and Conditions
  • Privacy Policy
  •  
Apps
  • iPhone & iPad
  • Android
Resources
  • Free Courses
  • Database Management
  • Machine Learning
  • All Tutorials
Certification Courses
  • All Courses
  • Data Science Course - All in One Bundle
  • Machine Learning Course
  • Hadoop Certification Training
  • Cloud Computing Training Course
  • R Programming Course
  • AWS Training Course
  • SAS Training Course

ISO 10004:2018 & ISO 9001:2015 Certified

© 2022 - EDUCBA. ALL RIGHTS RESERVED. THE CERTIFICATION NAMES ARE THE TRADEMARKS OF THEIR RESPECTIVE OWNERS.

EDUCBA
Free Data Science Course

SPSS, Data visualization with Python, Matplotlib Library, Seaborn Package

*Please provide your correct email id. Login details for this Free course will be emailed to you

By signing up, you agree to our Terms of Use and Privacy Policy.

EDUCBA Login

Forgot Password?

By signing up, you agree to our Terms of Use and Privacy Policy.

EDUCBA
Free Data Science Course

Hadoop, Data Science, Statistics & others

*Please provide your correct email id. Login details for this Free course will be emailed to you

By signing up, you agree to our Terms of Use and Privacy Policy.

EDUCBA

*Please provide your correct email id. Login details for this Free course will be emailed to you

By signing up, you agree to our Terms of Use and Privacy Policy.

Let’s Get Started

By signing up, you agree to our Terms of Use and Privacy Policy.

This website or its third-party tools use cookies, which are necessary to its functioning and required to achieve the purposes illustrated in the cookie policy. By closing this banner, scrolling this page, clicking a link or continuing to browse otherwise, you agree to our Privacy Policy

Loading . . .
Quiz
Question:

Answer:

Quiz Result
Total QuestionsCorrect AnswersWrong AnswersPercentage

Explore 1000+ varieties of Mock tests View more