ISO Date

datetime.date.iso

ISO 8601 date format. The universal default for date representation in databases, APIs, and data interchange.

Domain

datetime

Try it

CLI

$ finetype infer -i "2024-01-15"
→ datetime.date.iso

DuckDB

Detect

SELECT finetype('2024-01-15');
-- → 'datetime.date.iso'

Cast expression

strptime({col}, '%Y-%m-%d')::DATE
-- Format: %Y-%m-%d

Safe cast pipeline

-- Normalise and cast in one step
SELECT TRY_CAST(finetype_cast(my_column) AS DATE) AS clean_value
FROM my_table
WHERE finetype(my_column) = 'datetime.date.iso';

JSON Schema

finetype schema datetime.date.iso

{
  "$id": "https://meridian.online/schemas/datetime.date.iso",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "description": "ISO 8601 date format. The universal default for date representation in databases, APIs, and data interchange.",
  "examples": [
    "2024-01-15",
    "2019-12-31",
    "2000-01-01"
  ],
  "maxLength": 10,
  "minLength": 10,
  "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
  "title": "ISO Date",
  "type": "string",
  "x-finetype-broad-type": "DATE",
  "x-finetype-format-string": "%Y-%m-%d",
  "x-finetype-transform": "strptime({col}, '%Y-%m-%d')::DATE"
}

Examples

2024-01-152019-12-312000-01-01