metabase.db.metadata-queries
Predefined MBQL queries for getting metadata about an external database.
Predefined MBQL queries for getting metadata about an external database.
db-idclj
(db-id x)Return the database ID of a given entity.
Return the database ID of a given entity.
field-countclj
(field-count field)Return the count of field.
Return the count of `field`.
field-distinct-countclj
(field-distinct-count field & [limit])Return the distinct count of field.
Return the distinct count of `field`.
field-distinct-valuesclj
(field-distinct-values field)(field-distinct-values field max-results)Inputs: ([field] [field max-results :- su/IntGreaterThanZero])
Return the distinct values of field.
This is used to create a FieldValues object for :type/Category Fields.
Inputs: ([field] [field max-results :- su/IntGreaterThanZero]) Return the distinct values of `field`. This is used to create a `FieldValues` object for `:type/Category` Fields.
max-sample-rowsclj
The maximum number of values we should return when using table-rows-sample. This many is probably fine for
inferring special types and what-not; we don't want to scan millions of values at any rate.
The maximum number of values we should return when using `table-rows-sample`. This many is probably fine for inferring special types and what-not; we don't want to scan millions of values at any rate.
table-row-countclj
(table-row-count table)Fetch the row count of TABLE via the query processor.
Fetch the row count of TABLE via the query processor.
table-rows-sampleclj
(table-rows-sample table fields)Inputs: [table :- si/TableInstance fields :- [si/FieldInstance]] Returns: (s/maybe si/TableSample)
Run a basic MBQL query to fetch a sample of rows belonging to a Table.
Inputs: [table :- si/TableInstance fields :- [si/FieldInstance]] Returns: (s/maybe si/TableSample) Run a basic MBQL query to fetch a sample of rows belonging to a Table.
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