def pyarrow2redshift( # pylint: disable=too-many-branches,too-many-return-statements
dtype: pa.DataType, string_type: str
) -> str:
"""Pyarrow to Redshift data types conversion."""
if pa.types.is_int8(dtype):
return "SMALLINT"
if pa.types.is_int16(dtype) or pa.types.is_uint8(dtype):
return "SMALLINT"
if pa.types.is_int32(dtype) or pa.types.is_uint16(dtype):
return "INTEGER"
if pa.types.is_int64(dtype) or pa.types.is_uint32(dtype):
return "BIGINT"
if pa.types.is_uint64(dtype):
raise exceptions.UnsupportedType("There is no support for uint64, please consider int64 or uint32.")
if pa.types.is_float32(dtype):
return "FLOAT4"
if pa.types.is_float64(dtype):
return "FLOAT8"
if pa.types.is_boolean(dtype):
return "BOOL"
if pa.types.is_string(dtype):
return string_type
if pa.types.is_timestamp(dtype):
return "TIMESTAMP"
if pa.types.is_date(dtype):
return "DATE"
if pa.types.is_decimal(dtype):
return f"DECIMAL({dtype.precision},{dtype.scale})"
if pa.types.is_dictionary(dtype):
return pyarrow2redshift(dtype=dtype.value_type, string_type=string_type)
if pa.types.is_list(dtype) or pa.types.is_struct(dtype):
return "SUPER"
raise exceptions.UnsupportedType(f"Unsupported Redshift type: {dtype}")
def pyarrow2sqlserver( # pylint: disable=too-many-branches,too-many-return-statements
dtype: pa.DataType, string_type: str
) -> str:
"""Pyarrow to Microsoft SQL Server data types conversion."""
if pa.types.is_int8(dtype):
return "SMALLINT"
if pa.types.is_int16(dtype) or pa.types.is_uint8(dtype):
return "SMALLINT"
if pa.types.is_int32(dtype) or pa.types.is_uint16(dtype):
return "INT"
if pa.types.is_int64(dtype) or pa.types.is_uint32(dtype):
return "BIGINT"
if pa.types.is_uint64(dtype):
raise exceptions.UnsupportedType("There is no support for uint64, please consider int64 or uint32.")
if pa.types.is_float32(dtype):
return "FLOAT(24)"
if pa.types.is_float64(dtype):
return "FLOAT"
if pa.types.is_boolean(dtype):
return "BIT"
if pa.types.is_string(dtype):
return string_type
if pa.types.is_timestamp(dtype):
return "DATETIME2"
if pa.types.is_date(dtype):
return "DATE"
if pa.types.is_decimal(dtype):
return f"DECIMAL({dtype.precision},{dtype.scale})"
if pa.types.is_dictionary(dtype):
return pyarrow2sqlserver(dtype=dtype.value_type, string_type=string_type)
if pa.types.is_binary(dtype):
return "VARBINARY"
raise exceptions.UnsupportedType(f"Unsupported PostgreSQL type: {dtype}")
def pyarrow2sqlalchemy( # pylint: disable=too-many-branches,too-many-return-statements
dtype: pa.DataType, db_type: str) -> VisitableType:
"""Pyarrow to Athena data types conversion."""
if pa.types.is_int8(dtype):
return sqlalchemy.types.SmallInteger
if pa.types.is_int16(dtype):
return sqlalchemy.types.SmallInteger
if pa.types.is_int32(dtype):
return sqlalchemy.types.Integer
if pa.types.is_int64(dtype):
return sqlalchemy.types.BigInteger
if pa.types.is_float32(dtype):
return sqlalchemy.types.Float
if pa.types.is_float64(dtype):
if db_type == "mysql":
return sqlalchemy.dialects.mysql.DOUBLE
if db_type == "postgresql":
return sqlalchemy.dialects.postgresql.DOUBLE_PRECISION
if db_type == "redshift":
return sqlalchemy_redshift.dialect.DOUBLE_PRECISION
raise exceptions.InvalidDatabaseType(
f"{db_type} is a invalid database type, please choose between postgresql, mysql and redshift."
) # pragma: no cover
if pa.types.is_boolean(dtype):
return sqlalchemy.types.Boolean
if pa.types.is_string(dtype):
if db_type == "mysql":
return sqlalchemy.types.Text
if db_type == "postgresql":
return sqlalchemy.types.Text
if db_type == "redshift":
return sqlalchemy.types.VARCHAR(length=256)
raise exceptions.InvalidDatabaseType(
f"{db_type} is a invalid database type. "
f"Please choose between postgresql, mysql and redshift."
) # pragma: no cover
if pa.types.is_timestamp(dtype):
return sqlalchemy.types.DateTime
if pa.types.is_date(dtype):
return sqlalchemy.types.Date
if pa.types.is_binary(dtype):
if db_type == "redshift":
raise exceptions.UnsupportedType(
f"Binary columns are not supported for Redshift."
) # pragma: no cover
return sqlalchemy.types.Binary
if pa.types.is_decimal(dtype):
return sqlalchemy.types.Numeric(precision=dtype.precision,
scale=dtype.scale)
if pa.types.is_dictionary(dtype):
return pyarrow2sqlalchemy(dtype=dtype.value_type, db_type=db_type)
if dtype == pa.null(): # pragma: no cover
raise exceptions.UndetectedType(
"We can not infer the data type from an entire null object column")
raise exceptions.UnsupportedType(
f"Unsupported Pyarrow type: {dtype}") # pragma: no cover
def athena2redshift( # pylint: disable=too-many-branches,too-many-return-statements
dtype: str,
varchar_length: int = 256) -> str:
"""Athena to Redshift data types conversion."""
dtype = dtype.lower()
if dtype == "smallint":
return "SMALLINT"
if dtype in ("int", "integer"):
return "INTEGER"
if dtype == "bigint":
return "BIGINT"
if dtype == "float":
return "FLOAT4"
if dtype == "double":
return "FLOAT8"
if dtype in ("boolean", "bool"):
return "BOOL"
if dtype in ("string", "char", "varchar"):
return f"VARCHAR({varchar_length})"
if dtype == "timestamp":
return "TIMESTAMP"
if dtype == "date":
return "DATE"
if dtype.startswith("decimal"):
return dtype.upper()
raise exceptions.UnsupportedType(
f"Unsupported Athena type: {dtype}") # pragma: no cover
def athena2pandas(dtype: str) -> str: # pylint: disable=too-many-branches,too-many-return-statements
"""Athena to Pandas data types conversion."""
dtype = dtype.lower()
if dtype == "tinyint":
return "Int8"
if dtype == "smallint":
return "Int16"
if dtype in ("int", "integer"):
return "Int32"
if dtype == "bigint":
return "Int64"
if dtype == "float":
return "float32"
if dtype == "double":
return "float64"
if dtype == "boolean":
return "boolean"
if (dtype == "string"
) or dtype.startswith("char") or dtype.startswith("varchar"):
return "string"
if dtype in ("timestamp", "timestamp with time zone"):
return "datetime64"
if dtype == "date":
return "date"
if dtype.startswith("decimal"):
return "decimal"
if dtype in ("binary", "varbinary"):
return "bytes"
if dtype == "array": # pragma: no cover
return "list"
raise exceptions.UnsupportedType(
f"Unsupported Athena type: {dtype}") # pragma: no cover
def athena2pyarrow(dtype: str) -> pa.DataType: # pylint: disable=too-many-return-statements
"""Athena to PyArrow data types conversion."""
dtype = dtype.lower()
if dtype == "tinyint":
return pa.int8()
if dtype == "smallint":
return pa.int16()
if dtype in ("int", "integer"):
return pa.int32()
if dtype == "bigint":
return pa.int64()
if dtype == "float":
return pa.float32()
if dtype == "double":
return pa.float64()
if dtype == "boolean":
return pa.bool_()
if (dtype == "string"
) or dtype.startswith("char") or dtype.startswith("varchar"):
return pa.string()
if dtype == "timestamp":
return pa.timestamp(unit="ns")
if dtype == "date":
return pa.date32()
if dtype in ("binary" or "varbinary"):
return pa.binary()
if dtype.startswith("decimal"):
precision, scale = dtype.replace("decimal(",
"").replace(")", "").split(sep=",")
return pa.decimal128(precision=int(precision), scale=int(scale))
raise exceptions.UnsupportedType(
f"Unsupported Athena type: {dtype}") # pragma: no cover
def athena2quicksight(dtype: str) -> str: # pylint: disable=too-many-branches,too-many-return-statements
"""Athena to Quicksight data types conversion."""
dtype = dtype.lower()
if dtype == "tinyint":
return "INTEGER"
if dtype == "smallint":
return "INTEGER"
if dtype in ("int", "integer"):
return "INTEGER"
if dtype == "bigint":
return "INTEGER"
if dtype in ("float", "real"):
return "DECIMAL"
if dtype == "double":
return "DECIMAL"
if dtype in ("boolean", "bool"):
return "BOOLEAN"
if dtype in ("string", "char", "varchar"):
return "STRING"
if dtype == "timestamp":
return "DATETIME"
if dtype == "date":
return "DATETIME"
if dtype.startswith("decimal"):
return "DECIMAL"
if dtype == "binary": # pragma: no cover
return "BIT"
raise exceptions.UnsupportedType(
f"Unsupported Athena type: {dtype}") # pragma: no cover
def athena2pyarrow(dtype: str) -> pa.DataType: # pylint: disable=too-many-return-statements
"""Athena to PyArrow data types conversion."""
dtype = dtype.lower().replace(" ", "")
if dtype == "tinyint":
return pa.int8()
if dtype == "smallint":
return pa.int16()
if dtype in ("int", "integer"):
return pa.int32()
if dtype == "bigint":
return pa.int64()
if dtype in ("float", "real"):
return pa.float32()
if dtype == "double":
return pa.float64()
if dtype == "boolean":
return pa.bool_()
if (dtype == "string") or dtype.startswith("char") or dtype.startswith("varchar"):
return pa.string()
if dtype == "timestamp":
return pa.timestamp(unit="ns")
if dtype == "date":
return pa.date32()
if dtype in ("binary" or "varbinary"):
return pa.binary()
if dtype.startswith("decimal") is True:
precision, scale = dtype.replace("decimal(", "").replace(")", "").split(sep=",")
return pa.decimal128(precision=int(precision), scale=int(scale))
if dtype.startswith("array") is True:
return pa.list_(value_type=athena2pyarrow(dtype=dtype[6:-1]), list_size=-1)
if dtype.startswith("struct") is True:
return pa.struct([(f.split(":", 1)[0], athena2pyarrow(f.split(":", 1)[1])) for f in dtype[7:-1].split(",")])
if dtype.startswith("map") is True:
return pa.map_(athena2pyarrow(dtype[4:-1].split(",", 1)[0]), athena2pyarrow(dtype[4:-1].split(",", 1)[1]))
raise exceptions.UnsupportedType(f"Unsupported Athena type: {dtype}")
def pyarrow2athena(dtype: pa.DataType) -> str: # pylint: disable=too-many-branches,too-many-return-statements
"""Pyarrow to Athena data types conversion."""
if pa.types.is_int8(dtype):
return "tinyint"
if pa.types.is_int16(dtype):
return "smallint"
if pa.types.is_int32(dtype):
return "int"
if pa.types.is_int64(dtype):
return "bigint"
if pa.types.is_float32(dtype):
return "float"
if pa.types.is_float64(dtype):
return "double"
if pa.types.is_boolean(dtype):
return "boolean"
if pa.types.is_string(dtype):
return "string"
if pa.types.is_timestamp(dtype):
return "timestamp"
if pa.types.is_date(dtype):
return "date"
if pa.types.is_binary(dtype):
return "binary"
if pa.types.is_dictionary(dtype):
return pyarrow2athena(dtype=dtype.value_type)
if pa.types.is_decimal(dtype):
return f"decimal({dtype.precision},{dtype.scale})"
if pa.types.is_list(dtype):
return f"array<{pyarrow2athena(dtype=dtype.value_type)}>"
if pa.types.is_struct(dtype): # pragma: no cover
return f"struct<{', '.join([f'{f.name}: {pyarrow2athena(dtype=f.type)}' for f in dtype])}>"
if dtype == pa.null():
raise exceptions.UndetectedType("We can not infer the data type from an entire null object column")
raise exceptions.UnsupportedType(f"Unsupported Pyarrow type: {dtype}") # pragma: no cover
def athena_types_from_pandas(df: pd.DataFrame,
index: bool,
dtype: Optional[Dict[str, str]] = None,
index_left: bool = False) -> Dict[str, str]:
"""Extract the related Athena data types from any Pandas DataFrame."""
casts: Dict[str, str] = dtype if dtype else {}
pa_columns_types: Dict[str,
Optional[pa.DataType]] = pyarrow_types_from_pandas(
df=df,
index=index,
ignore_cols=list(casts.keys()),
index_left=index_left)
athena_columns_types: Dict[str, str] = {}
for k, v in pa_columns_types.items():
if v is None:
athena_columns_types[k] = casts[k].replace(" ", "")
else:
try:
athena_columns_types[k] = pyarrow2athena(dtype=v)
except exceptions.UndetectedType as ex:
raise exceptions.UndetectedType(
"Impossible to infer the equivalent Athena data type "
f"for the {k} column. "
"It is completely empty (only null values) "
f"and has a too generic data type ({df[k].dtype}). "
"Please, cast this columns with a more deterministic data type "
f"(e.g. df['{k}'] = df['{k}'].astype('string')) or "
"pass the column schema as argument for AWS Data Wrangler "
f"(e.g. dtype={{'{k}': 'string'}}") from ex
except exceptions.UnsupportedType as ex:
raise exceptions.UnsupportedType(
f"Unsupported Pyarrow type: {v} for column {k}") from ex
_logger.debug("athena_columns_types: %s", athena_columns_types)
return athena_columns_types
def _get_query_metadata(
query_execution_id: str, categories: List[str] = None, boto3_session: Optional[boto3.Session] = None
) -> Tuple[Dict[str, str], List[str], List[str], Dict[str, Any], List[str]]:
"""Get query metadata."""
cols_types: Dict[str, str] = get_query_columns_types(
query_execution_id=query_execution_id, boto3_session=boto3_session
)
_logger.debug("cols_types: %s", cols_types)
dtype: Dict[str, str] = {}
parse_timestamps: List[str] = []
parse_dates: List[str] = []
converters: Dict[str, Any] = {}
binaries: List[str] = []
col_name: str
col_type: str
for col_name, col_type in cols_types.items():
if col_type == "array":
raise exceptions.UnsupportedType(
"List data type is not support with ctas_approach=False. "
"Please use ctas_approach=True for List columns."
)
if col_type == "row":
raise exceptions.UnsupportedType(
"Struct data type is not support with ctas_approach=False. "
"Please use ctas_approach=True for Struct columns."
)
pandas_type: str = _data_types.athena2pandas(dtype=col_type)
if (categories is not None) and (col_name in categories):
dtype[col_name] = "category"
elif pandas_type in ["datetime64", "date"]:
parse_timestamps.append(col_name)
if pandas_type == "date":
parse_dates.append(col_name)
elif pandas_type == "bytes":
dtype[col_name] = "string"
binaries.append(col_name)
elif pandas_type == "decimal":
converters[col_name] = lambda x: Decimal(str(x)) if str(x) not in ("", "none", " ", "<NA>") else None
else:
dtype[col_name] = pandas_type
_logger.debug("dtype: %s", dtype)
_logger.debug("parse_timestamps: %s", parse_timestamps)
_logger.debug("parse_dates: %s", parse_dates)
_logger.debug("converters: %s", converters)
_logger.debug("binaries: %s", binaries)
return dtype, parse_timestamps, parse_dates, converters, binaries
def pyarrow2athena( # pylint: disable=too-many-branches,too-many-return-statements
dtype: pa.DataType,
ignore_null: bool = False) -> str:
"""Pyarrow to Athena data types conversion."""
if pa.types.is_int8(dtype):
return "tinyint"
if pa.types.is_int16(dtype) or pa.types.is_uint8(dtype):
return "smallint"
if pa.types.is_int32(dtype) or pa.types.is_uint16(dtype):
return "int"
if pa.types.is_int64(dtype) or pa.types.is_uint32(dtype):
return "bigint"
if pa.types.is_uint64(dtype):
raise exceptions.UnsupportedType(
"There is no support for uint64, please consider int64 or uint32.")
if pa.types.is_float32(dtype):
return "float"
if pa.types.is_float64(dtype):
return "double"
if pa.types.is_boolean(dtype):
return "boolean"
if pa.types.is_string(dtype):
return "string"
if pa.types.is_timestamp(dtype):
return "timestamp"
if pa.types.is_date(dtype):
return "date"
if pa.types.is_binary(dtype):
return "binary"
if pa.types.is_dictionary(dtype):
return pyarrow2athena(dtype=dtype.value_type)
if pa.types.is_decimal(dtype):
return f"decimal({dtype.precision},{dtype.scale})"
if pa.types.is_list(dtype):
return f"array<{pyarrow2athena(dtype=dtype.value_type)}>"
if pa.types.is_struct(dtype):
return f"struct<{','.join([f'{f.name}:{pyarrow2athena(dtype=f.type)}' for f in dtype])}>"
if pa.types.is_map(dtype):
return f"map<{pyarrow2athena(dtype=dtype.key_type)}, {pyarrow2athena(dtype=dtype.item_type)}>"
if dtype == pa.null():
if ignore_null:
return ""
raise exceptions.UndetectedType(
"We can not infer the data type from an entire null object column")
raise exceptions.UnsupportedType(f"Unsupported Pyarrow type: {dtype}")
def pyarrow2timestream(dtype: pa.DataType) -> str: # pylint: disable=too-many-branches,too-many-return-statements
"""Pyarrow to Amazon Timestream data types conversion."""
if pa.types.is_int8(dtype):
return "BIGINT"
if pa.types.is_int16(dtype) or pa.types.is_uint8(dtype):
return "BIGINT"
if pa.types.is_int32(dtype) or pa.types.is_uint16(dtype):
return "BIGINT"
if pa.types.is_int64(dtype) or pa.types.is_uint32(dtype):
return "BIGINT"
if pa.types.is_uint64(dtype):
return "BIGINT"
if pa.types.is_float32(dtype):
return "DOUBLE"
if pa.types.is_float64(dtype):
return "DOUBLE"
if pa.types.is_boolean(dtype):
return "BOOLEAN"
if pa.types.is_string(dtype):
return "VARCHAR"
raise exceptions.UnsupportedType(f"Unsupported Amazon Timestream measure type: {dtype}")
def pyarrow2mysql( # pylint: disable=too-many-branches,too-many-return-statements
dtype: pa.DataType, string_type: str
) -> str:
"""Pyarrow to MySQL data types conversion."""
if pa.types.is_int8(dtype):
return "TINYINT"
if pa.types.is_uint8(dtype):
return "UNSIGNED TINYINT"
if pa.types.is_int16(dtype):
return "SMALLINT"
if pa.types.is_uint16(dtype):
return "UNSIGNED SMALLINT"
if pa.types.is_int32(dtype):
return "INTEGER"
if pa.types.is_uint32(dtype):
return "UNSIGNED INTEGER"
if pa.types.is_int64(dtype):
return "BIGINT"
if pa.types.is_uint64(dtype):
return "UNSIGNED BIGINT"
if pa.types.is_float32(dtype):
return "FLOAT"
if pa.types.is_float64(dtype):
return "DOUBLE PRECISION"
if pa.types.is_boolean(dtype):
return "BOOLEAN"
if pa.types.is_string(dtype):
return string_type
if pa.types.is_timestamp(dtype):
return "TIMESTAMP"
if pa.types.is_date(dtype):
return "DATE"
if pa.types.is_decimal(dtype):
return f"DECIMAL({dtype.precision},{dtype.scale})"
if pa.types.is_dictionary(dtype):
return pyarrow2mysql(dtype=dtype.value_type, string_type=string_type)
if pa.types.is_binary(dtype):
return "BLOB"
raise exceptions.UnsupportedType(f"Unsupported MySQL type: {dtype}")
def _get_query_metadata( # pylint: disable=too-many-statements
query_execution_id: str,
boto3_session: boto3.Session,
categories: Optional[List[str]] = None,
query_execution_payload: Optional[Dict[str, Any]] = None,
) -> _QueryMetadata:
"""Get query metadata."""
if (query_execution_payload is not None) and (query_execution_payload["Status"]["State"] in _QUERY_FINAL_STATES):
if query_execution_payload["Status"]["State"] != "SUCCEEDED":
reason: str = query_execution_payload["Status"]["StateChangeReason"]
raise exceptions.QueryFailed(f"Query error: {reason}")
_query_execution_payload: Dict[str, Any] = query_execution_payload
else:
_query_execution_payload = wait_query(query_execution_id=query_execution_id, boto3_session=boto3_session)
cols_types: Dict[str, str] = get_query_columns_types(
query_execution_id=query_execution_id, boto3_session=boto3_session
)
_logger.debug("cols_types: %s", cols_types)
dtype: Dict[str, str] = {}
parse_timestamps: List[str] = []
parse_dates: List[str] = []
converters: Dict[str, Any] = {}
binaries: List[str] = []
col_name: str
col_type: str
for col_name, col_type in cols_types.items():
if col_type == "array":
raise exceptions.UnsupportedType(
"List data type is not support with ctas_approach=False. "
"Please use ctas_approach=True for List columns."
)
if col_type == "row":
raise exceptions.UnsupportedType(
"Struct data type is not support with ctas_approach=False. "
"Please use ctas_approach=True for Struct columns."
)
pandas_type: str = _data_types.athena2pandas(dtype=col_type)
if (categories is not None) and (col_name in categories):
dtype[col_name] = "category"
elif pandas_type in ["datetime64", "date"]:
parse_timestamps.append(col_name)
if pandas_type == "date":
parse_dates.append(col_name)
elif pandas_type == "bytes":
dtype[col_name] = "string"
binaries.append(col_name)
elif pandas_type == "decimal":
converters[col_name] = lambda x: Decimal(str(x)) if str(x) not in ("", "none", " ", "<NA>") else None
else:
dtype[col_name] = pandas_type
output_location: Optional[str] = None
if "ResultConfiguration" in _query_execution_payload:
output_location = _query_execution_payload["ResultConfiguration"].get("OutputLocation")
athena_statistics: Dict[str, Union[int, str]] = _query_execution_payload.get("Statistics", {})
manifest_location: Optional[str] = str(athena_statistics.get("DataManifestLocation"))
query_metadata: _QueryMetadata = _QueryMetadata(
execution_id=query_execution_id,
dtype=dtype,
parse_timestamps=parse_timestamps,
parse_dates=parse_dates,
converters=converters,
binaries=binaries,
output_location=output_location,
manifest_location=manifest_location,
raw_payload=_query_execution_payload,
)
_logger.debug("query_metadata:\n%s", query_metadata)
return query_metadata