Inserting and querying data in Supabase - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is the basic method to add new data into a Supabase table?

You use the insert() method on a Supabase client table reference to add new rows of data.

beginner

How do you retrieve all rows from a Supabase table?

Use the select('*') method on the table reference to get all rows and columns.

beginner

What does the eq() filter do in a Supabase query?

It filters rows where a column's value is exactly equal to the given value.

intermediate

Why is it important to handle errors when inserting or querying data in Supabase?

Because network issues or invalid data can cause failures, handling errors helps keep your app stable and informs users properly.

beginner

What is the typical structure of a Supabase insert operation in JavaScript?

You call supabase.from('table').insert([{column1: value1, column2: value2}]) and then handle the returned data or error.

Which Supabase method is used to add new rows to a table?

A select()

B update()

C insert()

D delete()

The insert() method adds new data rows to a table.

How do you get all columns and rows from a Supabase table?

A select('*')

B getAll()

C fetch()

D list()

Using select('*') fetches all columns and rows.

What does eq('id', 5) do in a Supabase query?

A Filters rows where id equals 5

B Filters rows where id is not 5

C Updates id to 5

D Deletes rows with id 5

eq() filters rows matching the exact value.

What should you do after calling insert() in Supabase?

A Immediately reload the page

B Check for errors and handle the response data

C Call <code>select()</code> automatically

D Nothing, it always succeeds

Always check for errors and handle the response to keep your app stable.

Which of these is a valid way to insert data into a Supabase table named 'users'?

A supabase.create('users', {name: 'Anna'})

B supabase.insert('users', {name: 'Anna'})

C supabase.add('users', 'Anna')

D supabase.from('users').insert([{name: 'Anna'}])

The correct syntax uses from('table').insert([{...}]).

Explain how to insert a new row into a Supabase table and handle the response.

Think about the method chain and error checking.

Describe how to query all data from a Supabase table and filter results by a column value.

Focus on select and filter methods.