Single line comments in PostgreSQL can be added using:.There are some basic differences between PostgreSQL VS MySQL in terms of comments, quotes, case sensitivity. So bookmark and share this post to ease your day-to-day development. | 8 | demouser | localhost | demo | Query | 0 | init | show processlist |Īs you can see from the above comparison, each database is different and the way you can get information from theseĭatabases change a bit. | 5 | event_scheduler | localhost | NULL | Daemon | 65151 | Waiting on empty queue | NULL | | Id | User | Host | db | Command | Time | State | Info | To show process list in MySQL you can use : show processlist Postgres=# select * from pg_stat_activity ĭatid | datname | pid | leader_pid | usesysid | usename | application_name | client_addr | client_hostname | client_port | backend_start | xact_start | query_start | state_change | wait_event_type | wait_event | state | backend_xid | backend_xmin | query_id | query | backend_type List users or roles in PostgreSQL:ĭetailed of information of users and roles can be obtained from \du To view the list of users or roles in PostgreSQL vs MySQL we can use the below syntax. ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci | | demo_table_primarykey | CREATE TABLE `demo_table_primarykey` ( Mysql> show create table demo_table_primarykey We can leverage the schema dump mechanism from that. If we want the exact table structure we can rely on pg_dump utility which is originally an export schema/data utility of postgres. List table section to view the detailed table info. In MySQL, to describe a table we can use desc like we discussed in the Public | demo_table_primarykey | table | demouser | permanent | heap | 0 bytes | Schema | Name | Type | Owner | Persistence | Access method | Size | Description Public | demo_table_primarykey | table | demouser "demo_table_primarykey_pkey" PRIMARY KEY, btree (id) Id | integer | | not null | | plain | | | psql we can use : \lĮxample in psql client: For our tutorial, you can see database demo is listed in the below example.Ĭolumn | Type | Collation | Nullable | Default | Storage | Compression | Stats target | Description To list all the databases in Postgres i.e. To show a list of all databases present in PostgreSQL or MySQL, we can use the below commands: List or show databases in Postgres or psql:ĭefault databases in most PostgreSQL servers are template0, template0, postgres. Show a list of all databasesĪs part of setup, we have created a database named demo (using create database demo) upfront in both PostgreSQL and We can connect to MySQL server with mysql and perform different operations.
mysql is a terminal based client for MySQL. We can connect to PostgreSQL server with psql and perform different operations.
As a quick recap, psql is a terminal based client for PostgreSQL. PostgreSQL and MySQL in terms of syntax for various operations or queries that are frequently used inįor the purpose of this tutorial we use psql and mysql clients for showcasing examples. In this tutorial we will compare and understand the differences between However, syntaxįor postgres and mysql is slightly different. When we get used to one database for example MySQL and then transition toĪnother database say PostgresSQL or viceversa, then we tend to use the same commands across each other. Many developers work on these two important databases when transitioning toĭifferent projects or different companies. PostgreSQL and MySQL are widely used databases by major companies across multiple projects, given the amount of scale and PostgreSQL vs MySQL differences side by side.
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How to Download PostgreSQL and Install step by step
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