DT
Drizzle Team•4d ago
Father Christmas

Use DB functions to format data on update e.g. DATE()

Is there a way to use database functions like DATE in SQLite to format a value on update to ensure it is formatted correctly? I have a text field where I store a person's date of birth and want it formatted as YYYY-MM-DD (which DATE does) and doing it on the client side with no verification on the server / db side seems error prone. As with schemas in general it is best to constrain data as much as possible and this data should never be in any other form. Is there a way to make it so? I already have a check that it is a valid date with 
check(
  "date_of_birth_check",
  sql`(LENGTH(${table.date_of_birth}) <= 10 AND DATE(${table.date_of_birth}, '+0 days') IS ${table.date_of_birth})`,
),
check(
  "date_of_birth_check",
  sql`(LENGTH(${table.date_of_birth}) <= 10 AND DATE(${table.date_of_birth}, '+0 days') IS ${table.date_of_birth})`,
),
but it would be nice if it could use the $onUpdate to format any string value date i pass in or is there some better approach?
1 Reply
Father Christmas
Father ChristmasOP•4d ago
A somewhat hacky solution that somewhat works is branded types of string of the validated date

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