Without further ado let’s write our very first query:
SELECT *
FROM users
This query could be translated into something like “Give me all columns from a table named users”.
SELECT is a keyword that tells SQL what columns you want to get. After SELECT we can use a wildcard (*) to get all available columns. Alternatively, we can specify columns we’d like to have like so:
SELECT
email,
signup_date,
created_at
FROM users
As you can see we just need to separate column names with a comma. Btw, this query will list all users’ emails with their signup dates (date column) and signup timestamps (datetime column). It’s a convention to have timestamps named like something_at – created_at (when the record was created), updated_at, published_at, etc.
FROM is another keyword that tells SQL where we want to get the data from. It should be followed up with a name.
For example, this query will get all records from a books table:
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