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Add range function #1796

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Add range function #1796

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19 changes: 19 additions & 0 deletions datajunction-server/datajunction_server/sql/functions.py
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Original file line number Diff line number Diff line change
Expand Up @@ -4780,6 +4780,25 @@ def infer_type(
return [arg.key, arg.value]


class Range(TableFunction):
"""
range(start[, end[, step[, numSlices]]]) / range(end)
Returns a table with a single BIGINT column `id` containing values
within the specified range.
"""

dialects = [Dialect.SPARK]


@Range.register
def infer_type(
*args: ct.IntegerBase,
) -> List[ct.NestedField]:
from datajunction_server.sql.parsing.ast import Name

return [ct.NestedField(name=Name("id"), field_type=ct.BigIntType())]


class FunctionRegistryDict(dict):
"""
Custom dictionary mapping for functions
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