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from .db2 import Db2EngineSpec


class IBMiEngineSpec(Db2EngineSpec):
    engine = "ibmi"
    engine_name = "IBM Db2 for i"
    max_column_name_length = 128

    @classmethod
    def epoch_to_dttm(cls) -> str:
        return "(DAYS({col}) - DAYS('1970-01-01')) * 86400 + MIDNIGHT_SECONDS({col})"