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8 changes: 6 additions & 2 deletions flexmeasures/data/utils.py
Original file line number Diff line number Diff line change
Expand Up @@ -33,14 +33,18 @@ def get_data_source(
Meant for scripts that may run for the first time.
"""

data_source = db.session.execute(
data_sources = db.session.scalars(
select(DataSource).filter_by(
name=data_source_name,
model=data_source_model,
version=data_source_version,
type=data_source_type,
)
).scalar_one_or_none()
).all()
if data_sources:
data_source = data_sources[0]
else:
data_source = None
if data_source is None:
data_source = DataSource(
name=data_source_name,
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