Supabase SQL
Add Constraint
Template for adding a constraint.
Add column
Template to add a column. Make sure to change the name and type.
Automatically update timestamps
Update a column timestamp on every update.
Basic Aggregrate Functions
Set of functions to perform calculation on a set of values. The return is a single summary value. (Except for "round()")
CRON job with pg_cron
Schedule PostgreSQL commands directly from the database.
Case Expression
Case Expression.
Change Column Type
Template to modify a column type. Make sure to change the name and type.
Create View
Basic view template. Change according to your preference.
Create basic table
Basic table template. Change "table_name" to the name you prefer.
Create function
Template to create a simple function.
Create function that return integer
Template to create a function that return integer like count of rows.
Create function that return table
Template to create a function a function that return set of table.
Create table with constraints
Table with constraints example.
Create table with foreign key
Table with foreign key (fk) template. Change "table_name" to the name you prefer.
Delete Storage Item
Delete items in Storage using SQL
Drop Constraint
Template for dropping / removing constraint.
Drop Function
Template for dropping / removing function.
Drop RLS
Template for dropping / removing row level security.
Drop Trigger
Template for dropping / removing trigger from table.
Drop View
Template for dropping / removing a view.
Full Text Search
How to use full text search in PostgreSQL.
Generate Youtube-like short ID
Generate YouTube-like short IDs as Postgres Primary Keys.
Handle New User - Function & Trigger
Insert new user data into another table when event new user signup using Supabase Auth.
Increment field value
Update a field with incrementing value using stored procedure.
List all constraints
List all constraints and their tables.
List all foreign keys
List all foreign keys (FKs) and their columns.
List all functions
List all the functions in (predefined/user-defined).
List all primary keys
List all primary keys (PKs) and their columns.
List all table size
List all table data size.
List all triggers
List all the triggers in (predefined/user-defined).
Query specific text from text[]
Query rows that has specific text you need in a text array.
RLS Advanced policies
Row level security with advanced/complicated policies.
RLS Edit Policy
Row level security editing.
RLS Policies with joins
Row level security that requires table joins .
RLS Policies with security definer functions
Row level security that make use of security definer functions .
RLS Read Access
Row level security for read access.
RLS Restrict updates
Row level security for restrict updates.
RLS Time to live for rows
Row level security policies to implement TTL.
RLS Verifying email domains
Row level security that verify email domains.
Rename Constraints
Template to rename any constraints you have.
Sequence operations
Define a sequence generator.
Show Postgres version
Check your database version.
Stripe subscriptions
Starter template for the Next.js Stripe Subscriptions Starter.
Todo List
Build a todo list with Row Level Security.
Update Constraint
Template for updating a constraint.
World Countries
Create a Country table for every countries in the world.
Sequence operations
Define a sequence generator.
Create Sequence
Syntax to create a sequence generator in Postgres SQL.
create [ temporary | temp ] sequence [ if not exists ] sequence_name [ increment [ by ] increment ]
[ minvalue min_value | no minvalue ] [ maxvalue max_value | no maxvalue ]
[ start [ with ] start_value ] [ cache cache ] [ [ no ] cycle ]
[ owned by { table_name.column_name | none } ]
-- Example 1. Create a sequence starting from 1 and incremented by 1 with no maximum and minimum value
create sequence test_seq increment by 1 start with 1 no maxvalue no minvalue; -- test_seq is the sequence name
-- Example 2. Create a sequence starting from 100 and incremented by 10
create sequence test_seq increment by 10 start with 100; -- test_seq is the sequence name
Next Value in Sequence
Fetch the next value of the sequence created.
select nextval('sequence_name');
-- Example
select nextval('test_seq'); -- test_seq is the sequence name
Last Value or current value of the sequence
Query to fetch most recently obtained value from a sequence
select currval('sequence_name');
-- Example
select currval('test_seq') -- test_seq is the sequence name
select last_value from sequence_name;
-- Example
select last_value from test_sequence; -- test_seq is the sequence name
Set Value of the sequence
Set the current value of the sequence to specific number within the range as defined at time of sequence generation.
select setval('sequence_number',value);
-- Example
select setval('test_seq',5)
Drop Sequence
Drop the sequence.
drop sequence sequence_name;
-- Example
drop sequence test_seq; -- test_seq is the sequence name