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Add append mode to create_*_table #189

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Merged
merged 1 commit into from
Apr 17, 2020
Merged

Add append mode to create_*_table #189

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15 changes: 8 additions & 7 deletions awswrangler/catalog.py
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Original file line number Diff line number Diff line change
Expand Up @@ -87,7 +87,7 @@ def create_parquet_table(
table: str,
path: str,
columns_types: Dict[str, str],
partitions_types: Optional[Dict[str, str]],
partitions_types: Optional[Dict[str, str]] = None,
compression: Optional[str] = None,
description: Optional[str] = None,
parameters: Optional[Dict[str, str]] = None,
Expand Down Expand Up @@ -120,7 +120,7 @@ def create_parquet_table(
columns_comments: Dict[str, str], optional
Columns names and the related comments (e.g. {'col0': 'Column 0.', 'col1': 'Column 1.', 'col2': 'Partition.'}).
mode: str
Only 'overwrite' available by now.
'overwrite' to recreate any possible axisting table or 'append' to keep any possible axisting table.
boto3_session : boto3.Session(), optional
Boto3 Session. The default boto3 session will be used if boto3_session receive None.

Expand Down Expand Up @@ -859,7 +859,7 @@ def create_csv_table(
table: str,
path: str,
columns_types: Dict[str, str],
partitions_types: Optional[Dict[str, str]],
partitions_types: Optional[Dict[str, str]] = None,
compression: Optional[str] = None,
description: Optional[str] = None,
parameters: Optional[Dict[str, str]] = None,
Expand Down Expand Up @@ -893,7 +893,7 @@ def create_csv_table(
columns_comments: Dict[str, str], optional
Columns names and the related comments (e.g. {'col0': 'Column 0.', 'col1': 'Column 1.', 'col2': 'Partition.'}).
mode: str
Only 'overwrite' available by now.
'overwrite' to recreate any possible axisting table or 'append' to keep any possible axisting table.
sep : str
String of length 1. Field delimiter for the output file.
boto3_session : boto3.Session(), optional
Expand Down Expand Up @@ -967,10 +967,11 @@ def _create_table(
if name in columns_comments:
par["Comment"] = columns_comments[name]
session: boto3.Session = _utils.ensure_session(session=boto3_session)
if mode == "overwrite":
exist: bool = does_table_exist(database=database, table=table, boto3_session=session)
if (mode == "overwrite") or (exist is False):
delete_table_if_exists(database=database, table=table, boto3_session=session)
client_glue: boto3.client = _utils.client(service_name="glue", session=session)
client_glue.create_table(DatabaseName=database, TableInput=table_input)
client_glue: boto3.client = _utils.client(service_name="glue", session=session)
client_glue.create_table(DatabaseName=database, TableInput=table_input)


def _csv_table_definition(
Expand Down
6 changes: 6 additions & 0 deletions testing/test_awswrangler/test_data_lake.py
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Original file line number Diff line number Diff line change
Expand Up @@ -443,6 +443,9 @@ def test_catalog(bucket, database):
partitions_types={"y": "int", "m": "int"},
compression="snappy",
)
wr.catalog.create_parquet_table(
database=database, table="test_catalog", path=path, columns_types={"col0": "string"}, mode="append"
)
assert wr.catalog.does_table_exist(database=database, table="test_catalog") is True
assert wr.catalog.delete_table_if_exists(database=database, table="test_catalog") is True
assert wr.catalog.delete_table_if_exists(database=database, table="test_catalog") is False
Expand Down Expand Up @@ -853,6 +856,9 @@ def test_athena_types(bucket, database):
partitions_types=partitions_types,
columns_types=columns_types,
)
wr.catalog.create_csv_table(
database=database, table="test_athena_types", path=path, columns_types={"col0": "string"}, mode="append"
)
wr.athena.repair_table("test_athena_types", database)
assert len(wr.catalog.get_csv_partitions(database, "test_athena_types")) == 3
df2 = wr.athena.read_sql_table("test_athena_types", database)
Expand Down