Programming/PostgreSQL/Table Queries

All of the following assume you have first loaded a database.

These also require replacing <table_name> with the actual name of the table to query.

Show Tables

\dt

Or for expanded data:

\dt+

Alternatively:

SELECT table_name FROM information_schema.tables
WHERE table_schema = 'public';

Show Extra Relational Data About Table

\d <table_name>

Show Table Indexes

SELECT indexname, indexdef FROM pg_indexes WHERE tablename = '<table_name>';

Create Table

CREATE TABLE <table_name> (
    <columns>
);

Where <columns> is replaced by the actual columns desired for the table.

For example, to create a table with columns of id, name, description, we can do:

CREATE TABLE <table_name> (
    id serial PRIMARY KEY,
    name VARCHAR(100),
    description VARCHAR(100)
);

Delete Table

DROP TABLE <table_name>;

Display Number of Records in Table

SELECT COUNT(*) FROM <table_name>;