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PostgreSQL Tutorial
  • Basic
    • What is PostgreSQL
    • PostgreSQL Features
    • How to Install PostgreSQL
    • PostgreSQL Versions
    • PostgreSQL Architecture
    • PostgreSQL GUI
    • Postgres Command-Line
    • PostgreSQL Variables
    • PostgreSQL Data Types
    • PostgreSQL NOT NULL
    • PostgreSQL Integer
    • PostgreSQL Boolean
    • PostgreSQL BIGINT
    • PostgreSQL NULLIF
    • PostgreSQL Administration
    • PostgreSQL Commands
    • PostgreSQL Operators
    • PostgreSQL IN Operator
    • Postgres like query
    • PostgreSQL encode
    • PostgreSQL Cheat Sheet
    • PostgreSQL List Databases
    • PostgreSQL Rename Database
  • 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
  • Advanced
    • PostgreSQL Schema
    • Postgres List Schemas
    • PostgreSQL Drop Schema
    • PostgreSQL VARCHAR
    • Array in PostgreSQL
    • PostgreSQL DDL
    • PostgreSQL List Users
    • Postgres Default User
    • Postgres add user
    • PostgreSQL User Password
    • PostgreSQL log_statement
    • PostgreSQL repository
    • PostgreSQL shared_buffer
    • PostgreSQL String Functions
    • 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 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 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 JSON vs JSONNB
    • PostgreSQL JDBC Driver
    • PostgreSQL Interview Questions

PostgreSQL Cheat Sheet

By Priya PedamkarPriya Pedamkar

PostgreSQL Cheat Sheet

Introduction to PostgreSQL Cheat Sheet

PostgreSQL cheat sheet is defined as how to use the basic commands of PostgreSQL, we have created our basic cheat sheet of PostgreSQL to take a quick overview of the PostgreSQL database. We can create a cheat sheet like how to list the databases, how to list the tables, how to list all users, how to create a database, how to drop the database, how to drop the table. We can also check how to access a specific database by a specific user.

Cheat Sheet of PostgreSQL

Below are the basic commands of the cheat sheet for an overview of the PostgreSQL database.

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1. Access the PostgreSQL server using psql command

Below is the syntax and example to access the database server by using the psql command.

Syntax

psql –U [username] –W [password] –d [database_name]

Example

psql -U postgres -W -d testing

PostgreSQL Cheat Sheet output 1

2. Connect to the specific database

Below is the syntax and example of connecting to the specific database. We have connected to the testing database.

Syntax

\c name_of_database;

Example

\c testing;

PostgreSQL Cheat Sheet output 2

3. Check the version of PostgreSQL database

Below is the syntax and example of checking the version of PostgreSQL.

Syntax

select version();

Example

select version();

PostgreSQL Cheat Sheet output 3

4. List all databases from PostgreSQL server

Below is the syntax and example to check all databases from the database server.

Syntax

# \l       OR       \l+

Example

\l+

PostgreSQL ALTER TABLE output 4

5. List all schema from PostgreSQL server

Below is the syntax and example to check all schema from the database server.

Syntax 

# \dn    OR       \dn+

Example 

\dn
\dn+

PostgreSQL Cheat Sheet output 5

6. List all tablespaces from PostgreSQL server

Below is the syntax and example to check all tablespaces from the database server.

Syntax 

# \db    OR       \db+

Example 

\db
\db+

PostgreSQL Cheat Sheet output 6

7. List all indexes from PostgreSQL server

Below is the syntax and example to check all indexes from the database server.

Syntax 

# \di     OR       \di+

Example 

\di
\di+

PostgreSQL Cheat Sheet output 7

8. List all tables from a specific database

Below is the syntax and example to check all tables from a specific database.

Syntax 

# \dt    OR       \dt+

Example 

\dt
\dt+

output 8

9. List all sequences from PostgreSQL server

Below is the syntax and example to check the all sequences from the database server.

Syntax 

# \ds    OR       \ds+

Example 

\ds
\ds+

output 9

10. List all views from PostgreSQL server

Below is the syntax and example to check the all views from the database server.

Syntax 

# \dv    OR       \dv+

Example 

\dv
\dv+

output 10

11. List extensions from PostgreSQL server

Below is the syntax and example to check the extensions from the database server.

Syntax 

# \dx    OR       \dx+

Example 

\dx
\dx+

output 11

12. Show detailed information of database table

Below is the syntax and example to show detailed information about the database table.

Syntax 

\d name_of_table;
\d+ name_of_table;

Example 

\d stud1;
\d+ stud1;

output 12

13. Create a new user in PostgreSQL

Below is the example and syntax to create a new user in PostgreSQL. We have created a test user.

Syntax 

Create user name_of_user;

Example 

Create user test password 'abc@123';

output 13

14. Create a new database in PostgreSQL

Below is the example and syntax to create a new database in PostgreSQL. We have created a test database.

Syntax 

Create database name_of_database;

Example 

Create database test;

output 14

15. Drop database in PostgreSQL

Below is the example and syntax to drop the database in PostgreSQL. We have deleted the test database.

Syntax 

Drop database name_of_database;

Example 

Drop database test;

output 15

16. Create a new table in PostgreSQL

Below is the example and syntax to create a new table in PostgreSQL. We have created a test table.

Syntax 

Create table name_of_table (name_of_column1 data_type, name_of_column1 data_type,name_of_column1 data_type, …, name_of_columnN data_type,);

Example 

Create table test (id int, name varchar, address varchar, phone int);

output 16

17. Create a new view in PostgreSQL

Below is the example and syntax to create a new view in PostgreSQL. We have created a test view.

Syntax 

Create view name_of_viewAS select column_name1, column_name2, column_name3, …, column_nameN from table_name;

Example 

Create view test AS select * from stud1;

output 17

18. Create a new index in PostgreSQL

Below is the example and syntax to create a new index in PostgreSQL. We have created a test_idx index.

Syntax 

Create index name_of_index AS on name_of_table (name_of_column);

Example 

create index test_idx on stud1 (id);

output 18

19. Drop index in PostgreSQL

Below is the example and syntax to drop the index in PostgreSQL. We have to delete the test_idx index.

Syntax 

Drop index name_of_index;

Example 

Drop index test_idx;

output 19

Recommended Articles

This is a guide to PostgreSQL Cheat Sheet. Here we discuss the basic commands of the cheat sheet for an overview of the PostgreSQL database with respective query examples. You may also have a look at the following articles to learn more –

  1. Array in PostgreSQL
  2. PostgreSQL replace
  3. PostgreSQL cluster
  4. PostgreSQL Trunc()
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