2024-03-13 15:47:58 +01:00
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version: 2
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2024-03-13 11:09:22 +01:00
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models:
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- name: dates
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description: |
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A dates dimension. Each record represents one calendar day.
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2024-03-13 15:47:58 +01:00
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All othe columns have handy representations of the date, its subcomponents, and other relative dates.
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2024-03-13 11:09:22 +01:00
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This table is generated with the dbt date package: https://hub.getdbt.com/calogica/dbt_date/latest/.
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columns:
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- name: date_day
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data_type: date
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description: The date this record represents. All relative dates are relative to this. All derived date components are derived from this.
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- name: prior_date_day
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data_type: date
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description: The day before date day.
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- name: next_date_day
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data_type: date
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description: The day after date day.
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- name: prior_year_date_day
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data_type: date
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description: The same day of the same month, but in the previous year. If date day is Feb 29th, this col returns Feb 28th.
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- name: prior_year_over_year_date_day
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data_type: date
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description: The day placed 365 days before the date day. Behaves a bit funny with leap years.
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- name: day_of_week
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data_type: integer
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description: The day of the week as a number, were Monday is 1 and Sunday is 7.
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- name: day_of_week_name
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data_type: text
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description: The full name of the day of the week.
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- name: day_of_week_name_short
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data_type: text
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description: The day of the week as a 3 digit shortened version.
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- name: day_of_month
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data_type: integer
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description: The day of the month as a number.
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- name: day_of_year
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data_type: integer
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description: The day of the year as a number, where January 1st is 1 and December 31st is 365/366.
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- name: week_start_date
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data_type: date
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description: |
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The full date for the first day of the week of date day.
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It considers Sunday to be the first day of the week.
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- name: week_end_date
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data_type: date
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description: |
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The full date for the last day of the week of date day.
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It considers Saturday to be the last day of the week.
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- name: prior_year_week_start_date
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data_type: date
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description: Same as week_start_date, but for the same date day in the previous year.
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- name: prior_year_week_end_date
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data_type: date
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description: Same as week_end_date, but for the same date day in the previous year.
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- name: week_of_year
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data_type: integer
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description: The week of the year as a number, where the first week is 1 and the last week is 52/53.
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- name: iso_week_start_date
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data_type: date
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description: |
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The full date for the first day of the week of date day, according to ISO specs.
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It considers Monday to be the first day of the week.
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Read more here: https://en.wikipedia.org/wiki/ISO_week_date
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- name: iso_week_end_date
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data_type: date
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description: |
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The full date for the last day of the week of date day, according to ISO specs.
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It considers Sunday to be the last day of the week.
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Read more here: https://en.wikipedia.org/wiki/ISO_week_date
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- name: prior_year_iso_week_start_date
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data_type: date
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description: "Read more here: https://en.wikipedia.org/wiki/ISO_week_date"
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- name: prior_year_iso_week_end_date
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data_type: date
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description: "Read more here: https://en.wikipedia.org/wiki/ISO_week_date"
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- name: iso_week_of_year
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data_type: integer
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description: "Read more here: https://en.wikipedia.org/wiki/ISO_week_date"
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- name: prior_year_week_of_year
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data_type: integer
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description: ""
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- name: prior_year_iso_week_of_year
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data_type: integer
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description: "Read more here: https://en.wikipedia.org/wiki/ISO_week_date"
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- name: month_of_year
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data_type: integer
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description: The month date day belongs to as a number (1 for Jan, 12 for Dec).
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- name: month_name
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data_type: text
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description: The month date day belongs to in English.
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- name: month_name_short
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data_type: text
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description: The month date day belongs to as a 3 digit shortened version.
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- name: month_start_date
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data_type: date
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description: The full date for the first day of the month.
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- name: month_end_date
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data_type: date
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description: The full date for the last day of the month.
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- name: prior_year_month_start_date
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data_type: date
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description: The full date for the first day of the same month last year.
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- name: prior_year_month_end_date
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data_type: date
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description: The full date for the last day of the same month last year.
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- name: quarter_of_year
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data_type: integer
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description: The quarter date day belongs to as a number (1 for Q1, 4 for Q4).
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- name: quarter_start_date
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data_type: date
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description: The full date for the first date of the quarter.
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- name: quarter_end_date
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data_type: date
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description: The full date for the last date of the quarter.
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- name: year_number
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data_type: integer
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description: The year date day belongs to as a number.
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- name: year_start_date
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data_type: date
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description: The full date for the first day of the year.
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- name: year_end_date
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data_type: date
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description: The full date for the last day of the year.
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2024-06-19 11:52:28 +02:00
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- name: daily_currency_exchange_rates
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description:
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This model holds a lot of data on currency exchange rates. The time
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granularity is daily. Each record holds a currency pair for a specific
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day, source and version.
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Actual rates are sourced from xe.com data. The `guessed` and `forecast`
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versions are built by simply 'pushing' the first/last exchange rate on
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record. Basically, wherever we don't have data for a date, we pick the
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closest actual data point that comes from xe.com. Bear in mind this means
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that `forecast` version records will change on a daily basis as actual
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data moves forwards, meaning you shouldn't assume your money amounts
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converted in the future should always stay put.
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Note that, given the dimensionality, getting a simple time series for a
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currency pair will require a bit of filtering.
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Reverse rates are explicit. This means that, for any given day and any
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given currency pair, you will find two records with opposite from/to
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positions. So, for 2024-01-01, you will find both a EUR->USD record and a
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USD->EUR record with the opposite rate (1/rate).
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columns:
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- name: id_exchange_rate
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data_type: text
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description: A unique ID for the record, derived from concatenating the
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currencies, date, source and version. Currency order is relevant
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(EURUSD != USDEUR).
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tests:
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- not_null
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- unique
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- name: from_currency
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data_type: character
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description: The source currency, represented as an ISO 4217 code.
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tests:
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- not_null
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- name: to_currency
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data_type: character
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description: The target currency, represented as an ISO 4217 code.
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tests:
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- not_null
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- name: rate
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data_type: numeric
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description: >-
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The exchange rate, represented as the units of the target currency
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that one unit of source currency gets you. So, from_currency=USD to
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to_currency=PLN with rate=4.2 should be read as '1 US Dollar buys me
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4.2 Polish Zlotys'.
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For same currency pairs (EUR to EUR, USD to USD, etc). The rate will
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always be one.
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The rate can be smaller than one, but can't be negative.
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tests:
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- not_negative_or_zero
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- not_null
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- name: rate_date_utc
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data_type: date
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description: The date in which the rate record is relevant.
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tests:
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- not_null
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- name: source
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data_type: text
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description:
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Where is the data coming from. Records that are composed from
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making assumptions on real data will contain `_inferred`.
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- name: rate_version
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data_type: text
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description:
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The version of the rate. This can be one of `actual` (the rate is a
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reality fact), `forecast` (the rate sits in the future and is a guess
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in nature) or `guess` (the rate sits in the past and is a guess in
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nature). Note that one currency pair can have multiple rate versions
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on the same date.
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tests:
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- accepted_values:
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values:
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- guess
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- actual
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- forecast
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- not_null
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- name: updated_at_utc
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data_type: timestamp with time zone
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description:
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For external sources, this will be the point in time when the
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information was obtained from them. For stuff we make up here in the
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DWH, this will be the point in time when we made the assumption.
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tests:
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- not_null
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- name: simple_exchange_rates
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description: >-
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A simplified vision of exchange rates, derived from
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`int_daily_currency_exchange_rates`. Come here if you don't want to
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understand nuances and complexities and just want to convert rates.
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The time granularity is daily. Each record holds a currency pair for a
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specific day. You will only find one conversion rate per currency pair and
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date.
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tests:
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- dbt_utils.unique_combination_of_columns:
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combination_of_columns:
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- from_currency
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- to_currency
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- rate_date_utc
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columns:
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- name: from_currency
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data_type: character
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description: The source currency, represented as an ISO 4217 code.
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tests:
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- not_null
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- name: to_currency
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data_type: character
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description: The source currency, represented as an ISO 4217 code.
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tests:
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- not_null
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- name: rate
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data_type: numeric
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description: The target currency, represented as an ISO 4217 code.
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tests:
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- not_null
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- name: rate_date_utc
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data_type: date
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description: The date in which the rate record is relevant.
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tests:
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- not_null
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- name: updated_at_utc
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data_type: timestamp with time zone
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description:
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For external sources, this will be the point in time when the
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information was obtained from them. For stuff we make up here in the
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DWH, this will be the point in time when we made the assumption.
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tests:
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- not_null
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