Query & search registries¶
This guide walks through all the ways of finding metadata records in LaminDB registries.
# !pip install lamindb
!lamin init --storage ./test-registries
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→ connected lamindb: testuser1/test-registries
We’ll need some toy data.
import lamindb as ln
# create toy data
ln.Artifact(ln.core.datasets.file_jpg_paradisi05(), description="My image").save()
ln.Artifact.from_df(ln.core.datasets.df_iris(), description="The iris collection").save()
ln.Artifact(ln.core.datasets.file_fastq(), description="My fastq").save()
# see the content of the artifact registry
ln.Artifact.df()
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→ connected lamindb: testuser1/test-registries
! no run & transform got linked, call `ln.track()` & re-run
! no run & transform got linked, call `ln.track()` & re-run
! no run & transform got linked, call `ln.track()` & re-run
| uid | version | is_latest | description | key | suffix | type | size | hash | n_objects | n_observations | _hash_type | _accessor | visibility | _key_is_virtual | storage_id | transform_id | run_id | created_at | created_by_id | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| id | ||||||||||||||||||||
| 3 | bies9mwWlY7srbdv0000 | None | True | My fastq | None | .fastq.gz | None | 20 | hi7ZmAzz8sfMd3vIQr-57Q | None | None | md5 | None | 1 | True | 1 | None | None | 2024-10-20 16:21:23.982392+00:00 | 1 |
| 2 | h7AnhVaYlbG7GmrN0000 | None | True | The iris collection | None | .parquet | dataset | 5629 | 5axHfO_2Pmlun2sJZHVuNg | None | None | md5 | DataFrame | 1 | True | 1 | None | None | 2024-10-20 16:21:23.975189+00:00 | 1 |
| 1 | P4684TH5GuNoBI1U0000 | None | True | My image | None | .jpg | None | 29358 | r4tnqmKI_SjrkdLzpuWp4g | None | None | md5 | None | 1 | True | 1 | None | None | 2024-10-20 16:21:23.650055+00:00 | 1 |
Look up metadata¶
For registries with less than 100k records, auto-completing a Lookup object is the most convenient way of finding a record.
For example, take the User registry:
# query the database for all users, optionally pass the field that creates the key
users = ln.User.lookup(field="handle")
# the lookup object is a NamedTuple
users
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Lookup(testuser1=User(uid='DzTjkKse', handle='testuser1', name='Test User1', created_at=2024-10-20 16:21:21 UTC), dict=<bound method Lookup.dict of <lamin_utils._lookup.Lookup object at 0x7f3d369bd890>>)
With auto-complete, we find a specific user record:
user = users.testuser1
user
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User(uid='DzTjkKse', handle='testuser1', name='Test User1', created_at=2024-10-20 16:21:21 UTC)
You can also get a dictionary:
users_dict = ln.User.lookup().dict()
users_dict
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{'testuser1': User(uid='DzTjkKse', handle='testuser1', name='Test User1', created_at=2024-10-20 16:21:21 UTC)}
Query exactly one record¶
get errors if more than one matching records are found.
# by the universal base62 uid
ln.User.get("DzTjkKse")
# by any expression involving fields
ln.User.get(handle="testuser1")
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User(uid='DzTjkKse', handle='testuser1', name='Test User1', created_at=2024-10-20 16:21:21 UTC)
Query sets of records¶
Filter for all artifacts created by a user:
ln.Artifact.filter(created_by=user).df()
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| uid | version | is_latest | description | key | suffix | type | size | hash | n_objects | n_observations | _hash_type | _accessor | visibility | _key_is_virtual | storage_id | transform_id | run_id | created_at | created_by_id | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| id | ||||||||||||||||||||
| 1 | P4684TH5GuNoBI1U0000 | None | True | My image | None | .jpg | None | 29358 | r4tnqmKI_SjrkdLzpuWp4g | None | None | md5 | None | 1 | True | 1 | None | None | 2024-10-20 16:21:23.650055+00:00 | 1 |
| 2 | h7AnhVaYlbG7GmrN0000 | None | True | The iris collection | None | .parquet | dataset | 5629 | 5axHfO_2Pmlun2sJZHVuNg | None | None | md5 | DataFrame | 1 | True | 1 | None | None | 2024-10-20 16:21:23.975189+00:00 | 1 |
| 3 | bies9mwWlY7srbdv0000 | None | True | My fastq | None | .fastq.gz | None | 20 | hi7ZmAzz8sfMd3vIQr-57Q | None | None | md5 | None | 1 | True | 1 | None | None | 2024-10-20 16:21:23.982392+00:00 | 1 |
To access the results encoded in a filter statement, execute its return value with one of:
.df(): A pandasDataFramewith each record in a row..all(): AQuerySet..one(): Exactly one record. Will raise an error if there is none. Is equivalent to the.get()method shown above..one_or_none(): Either one record orNoneif there is no query result.
Note
The ORMs in LaminDB are Django Models and any Django query works. LaminDB extends Django’s API for data scientists.
Under the hood, any .filter() call translates into a SQL select statement.
.one() and .one_or_none() are two parts of LaminDB’s API that are borrowed from SQLAlchemy.
Search for records¶
Search the toy data:
ln.Artifact.search("iris").df()
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| uid | version | is_latest | description | key | suffix | type | size | hash | n_objects | n_observations | _hash_type | _accessor | visibility | _key_is_virtual | storage_id | transform_id | run_id | created_at | created_by_id | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| id | ||||||||||||||||||||
| 2 | h7AnhVaYlbG7GmrN0000 | None | True | The iris collection | None | .parquet | dataset | 5629 | 5axHfO_2Pmlun2sJZHVuNg | None | None | md5 | DataFrame | 1 | True | 1 | None | None | 2024-10-20 16:21:23.975189+00:00 | 1 |
Let us create 500 notebook objects with fake titles, save, and search them:
transforms = [ln.Transform(name=title, type="notebook") for title in ln.core.datasets.fake_bio_notebook_titles(n=500)]
ln.save(transforms)
# search
ln.Transform.search("intestine").df().head(5)
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| uid | version | is_latest | name | key | description | type | source_code | hash | reference | reference_type | _source_code_artifact_id | created_at | created_by_id | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| id | ||||||||||||||
| 1 | hjGNl5mrTIa60000 | None | True | Rank IgG2 intestine IgG IgG2. | None | None | notebook | None | None | None | None | None | 2024-10-20 16:21:25.594648+00:00 | 1 |
| 9 | 7mXHDYQxKoH30000 | None | True | Epsilon Cell Outer hair cells rank IgA intesti... | None | None | notebook | None | None | None | None | None | 2024-10-20 16:21:25.595203+00:00 | 1 |
| 11 | 5MwQR4eEhnM80000 | None | True | Intestine IgG2 IgG Muscles of breathing. | None | None | notebook | None | None | None | None | None | 2024-10-20 16:21:25.595324+00:00 | 1 |
| 28 | dsTP1VijHSWC0000 | None | True | Interstitium investigate intestine Outer hair ... | None | None | notebook | None | None | None | None | None | 2024-10-20 16:21:25.596375+00:00 | 1 |
| 58 | 8hbd4EFQkNBC0000 | None | True | Visualize visualize Granulosa lutein cells int... | None | None | notebook | None | None | None | None | None | 2024-10-20 16:21:25.598212+00:00 | 1 |
Note
Currently, the LaminHub UI search is more powerful than the search of the lamindb open-source package.
Leverage relations¶
Django has a double-under-score syntax to filter based on related tables.
This syntax enables you to traverse several layers of relations and leverage different comparators.
ln.Artifact.filter(created_by__handle__startswith="testuse").df()
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| uid | version | is_latest | description | key | suffix | type | size | hash | n_objects | n_observations | _hash_type | _accessor | visibility | _key_is_virtual | storage_id | transform_id | run_id | created_at | created_by_id | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| id | ||||||||||||||||||||
| 1 | P4684TH5GuNoBI1U0000 | None | True | My image | None | .jpg | None | 29358 | r4tnqmKI_SjrkdLzpuWp4g | None | None | md5 | None | 1 | True | 1 | None | None | 2024-10-20 16:21:23.650055+00:00 | 1 |
| 2 | h7AnhVaYlbG7GmrN0000 | None | True | The iris collection | None | .parquet | dataset | 5629 | 5axHfO_2Pmlun2sJZHVuNg | None | None | md5 | DataFrame | 1 | True | 1 | None | None | 2024-10-20 16:21:23.975189+00:00 | 1 |
| 3 | bies9mwWlY7srbdv0000 | None | True | My fastq | None | .fastq.gz | None | 20 | hi7ZmAzz8sfMd3vIQr-57Q | None | None | md5 | None | 1 | True | 1 | None | None | 2024-10-20 16:21:23.982392+00:00 | 1 |
The filter selects all artifacts based on the users who ran the generating notebook.
Under the hood, in the SQL database, it’s joining the artifact table with the run and the user table.
Comparators¶
You can qualify the type of comparison in a query by using a comparator.
Below follows a list of the most import, but Django supports about two dozen field comparators field__comparator=value.
and¶
ln.Artifact.filter(suffix=".jpg", created_by=user).df()
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| uid | version | is_latest | description | key | suffix | type | size | hash | n_objects | n_observations | _hash_type | _accessor | visibility | _key_is_virtual | storage_id | transform_id | run_id | created_at | created_by_id | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| id | ||||||||||||||||||||
| 1 | P4684TH5GuNoBI1U0000 | None | True | My image | None | .jpg | None | 29358 | r4tnqmKI_SjrkdLzpuWp4g | None | None | md5 | None | 1 | True | 1 | None | None | 2024-10-20 16:21:23.650055+00:00 | 1 |
less than/ greater than¶
Or subset to artifacts smaller than 10kB. Here, we can’t use keyword arguments, but need an explicit where statement.
ln.Artifact.filter(created_by=user, size__lt=1e4).df()
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| uid | version | is_latest | description | key | suffix | type | size | hash | n_objects | n_observations | _hash_type | _accessor | visibility | _key_is_virtual | storage_id | transform_id | run_id | created_at | created_by_id | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| id | ||||||||||||||||||||
| 2 | h7AnhVaYlbG7GmrN0000 | None | True | The iris collection | None | .parquet | dataset | 5629 | 5axHfO_2Pmlun2sJZHVuNg | None | None | md5 | DataFrame | 1 | True | 1 | None | None | 2024-10-20 16:21:23.975189+00:00 | 1 |
| 3 | bies9mwWlY7srbdv0000 | None | True | My fastq | None | .fastq.gz | None | 20 | hi7ZmAzz8sfMd3vIQr-57Q | None | None | md5 | None | 1 | True | 1 | None | None | 2024-10-20 16:21:23.982392+00:00 | 1 |
in¶
ln.Artifact.filter(suffix__in=[".jpg", ".fastq.gz"]).df()
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| uid | version | is_latest | description | key | suffix | type | size | hash | n_objects | n_observations | _hash_type | _accessor | visibility | _key_is_virtual | storage_id | transform_id | run_id | created_at | created_by_id | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| id | ||||||||||||||||||||
| 1 | P4684TH5GuNoBI1U0000 | None | True | My image | None | .jpg | None | 29358 | r4tnqmKI_SjrkdLzpuWp4g | None | None | md5 | None | 1 | True | 1 | None | None | 2024-10-20 16:21:23.650055+00:00 | 1 |
| 3 | bies9mwWlY7srbdv0000 | None | True | My fastq | None | .fastq.gz | None | 20 | hi7ZmAzz8sfMd3vIQr-57Q | None | None | md5 | None | 1 | True | 1 | None | None | 2024-10-20 16:21:23.982392+00:00 | 1 |
order by¶
ln.Artifact.filter().order_by("-updated_at").df()
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| uid | version | is_latest | description | key | suffix | type | size | hash | n_objects | n_observations | _hash_type | _accessor | visibility | _key_is_virtual | storage_id | transform_id | run_id | created_at | created_by_id | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| id | ||||||||||||||||||||
| 3 | bies9mwWlY7srbdv0000 | None | True | My fastq | None | .fastq.gz | None | 20 | hi7ZmAzz8sfMd3vIQr-57Q | None | None | md5 | None | 1 | True | 1 | None | None | 2024-10-20 16:21:23.982392+00:00 | 1 |
| 2 | h7AnhVaYlbG7GmrN0000 | None | True | The iris collection | None | .parquet | dataset | 5629 | 5axHfO_2Pmlun2sJZHVuNg | None | None | md5 | DataFrame | 1 | True | 1 | None | None | 2024-10-20 16:21:23.975189+00:00 | 1 |
| 1 | P4684TH5GuNoBI1U0000 | None | True | My image | None | .jpg | None | 29358 | r4tnqmKI_SjrkdLzpuWp4g | None | None | md5 | None | 1 | True | 1 | None | None | 2024-10-20 16:21:23.650055+00:00 | 1 |
contains¶
ln.Transform.filter(name__contains="search").df().head(5)
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| uid | version | is_latest | name | key | description | type | source_code | hash | reference | reference_type | _source_code_artifact_id | created_at | created_by_id | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| id | ||||||||||||||
| 3 | qKcZNM9rFr2q0000 | None | True | Research Pancreatic stellate cell IgA IgD IgA. | None | None | notebook | None | None | None | None | None | 2024-10-20 16:21:25.594835+00:00 | 1 |
| 8 | biOieq3zmYvd0000 | None | True | Intermediate Skeletal Muscle Cell Uterus resea... | None | None | notebook | None | None | None | None | None | 2024-10-20 16:21:25.595142+00:00 | 1 |
| 19 | Gb9skcCgh0mp0000 | None | True | Research IgE IgM research IgD IgM. | None | None | notebook | None | None | None | None | None | 2024-10-20 16:21:25.595811+00:00 | 1 |
| 38 | CXemohar4GwZ0000 | None | True | Study Keratinocyte IgG3 IgM Keratinocyte resea... | None | None | notebook | None | None | None | None | None | 2024-10-20 16:21:25.596992+00:00 | 1 |
| 39 | JcCRg6H8dcc50000 | None | True | Research Intermediate skeletal muscle cell IgG... | None | None | notebook | None | None | None | None | None | 2024-10-20 16:21:25.597053+00:00 | 1 |
And case-insensitive:
ln.Transform.filter(name__icontains="Search").df().head(5)
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| uid | version | is_latest | name | key | description | type | source_code | hash | reference | reference_type | _source_code_artifact_id | created_at | created_by_id | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| id | ||||||||||||||
| 3 | qKcZNM9rFr2q0000 | None | True | Research Pancreatic stellate cell IgA IgD IgA. | None | None | notebook | None | None | None | None | None | 2024-10-20 16:21:25.594835+00:00 | 1 |
| 8 | biOieq3zmYvd0000 | None | True | Intermediate Skeletal Muscle Cell Uterus resea... | None | None | notebook | None | None | None | None | None | 2024-10-20 16:21:25.595142+00:00 | 1 |
| 19 | Gb9skcCgh0mp0000 | None | True | Research IgE IgM research IgD IgM. | None | None | notebook | None | None | None | None | None | 2024-10-20 16:21:25.595811+00:00 | 1 |
| 38 | CXemohar4GwZ0000 | None | True | Study Keratinocyte IgG3 IgM Keratinocyte resea... | None | None | notebook | None | None | None | None | None | 2024-10-20 16:21:25.596992+00:00 | 1 |
| 39 | JcCRg6H8dcc50000 | None | True | Research Intermediate skeletal muscle cell IgG... | None | None | notebook | None | None | None | None | None | 2024-10-20 16:21:25.597053+00:00 | 1 |
startswith¶
ln.Transform.filter(name__startswith="Research").df()
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| uid | version | is_latest | name | key | description | type | source_code | hash | reference | reference_type | _source_code_artifact_id | created_at | created_by_id | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| id | ||||||||||||||
| 3 | qKcZNM9rFr2q0000 | None | True | Research Pancreatic stellate cell IgA IgD IgA. | None | None | notebook | None | None | None | None | None | 2024-10-20 16:21:25.594835+00:00 | 1 |
| 19 | Gb9skcCgh0mp0000 | None | True | Research IgE IgM research IgD IgM. | None | None | notebook | None | None | None | None | None | 2024-10-20 16:21:25.595811+00:00 | 1 |
| 39 | JcCRg6H8dcc50000 | None | True | Research Intermediate skeletal muscle cell IgG... | None | None | notebook | None | None | None | None | None | 2024-10-20 16:21:25.597053+00:00 | 1 |
| 73 | zOzJSIPGUPnf0000 | None | True | Research classify Uterus visualize IgG. | None | None | notebook | None | None | None | None | None | 2024-10-20 16:21:25.602134+00:00 | 1 |
| 95 | FbQN9aXQn1xU0000 | None | True | Research Bartholin's gland Granulosa lutein ce... | None | None | notebook | None | None | None | None | None | 2024-10-20 16:21:25.603444+00:00 | 1 |
| 133 | MOlqvaRKagGU0000 | None | True | Research IgG IgD investigate. | None | None | notebook | None | None | None | None | None | 2024-10-20 16:21:25.608198+00:00 | 1 |
| 181 | IzJNtw4R8GoA0000 | None | True | Research Cochlea Interstitium Epsilon cell IgG... | None | None | notebook | None | None | None | None | None | 2024-10-20 16:21:25.611071+00:00 | 1 |
| 231 | 6JUbtLJLKk4e0000 | None | True | Research visualize IgA Outer hair cells. | None | None | notebook | None | None | None | None | None | 2024-10-20 16:21:25.617224+00:00 | 1 |
| 329 | mNo3oZ0AlY5b0000 | None | True | Research Uterus IgM Bartholin's gland IgG2. | None | None | notebook | None | None | None | None | None | 2024-10-20 16:21:25.625563+00:00 | 1 |
| 371 | bIH2ReRLTJV10000 | None | True | Research IgE Lymphatic vessel IgA. | None | None | notebook | None | None | None | None | None | 2024-10-20 16:21:25.630586+00:00 | 1 |
| 455 | 7X0Zt5xubZS80000 | None | True | Research Uterus Bartholin's gland IgG2. | None | None | notebook | None | None | None | None | None | 2024-10-20 16:21:25.638103+00:00 | 1 |
or¶
ln.Artifact.filter(ln.Q(suffix=".jpg") | ln.Q(suffix=".fastq.gz")).df()
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| uid | version | is_latest | description | key | suffix | type | size | hash | n_objects | n_observations | _hash_type | _accessor | visibility | _key_is_virtual | storage_id | transform_id | run_id | created_at | created_by_id | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| id | ||||||||||||||||||||
| 1 | P4684TH5GuNoBI1U0000 | None | True | My image | None | .jpg | None | 29358 | r4tnqmKI_SjrkdLzpuWp4g | None | None | md5 | None | 1 | True | 1 | None | None | 2024-10-20 16:21:23.650055+00:00 | 1 |
| 3 | bies9mwWlY7srbdv0000 | None | True | My fastq | None | .fastq.gz | None | 20 | hi7ZmAzz8sfMd3vIQr-57Q | None | None | md5 | None | 1 | True | 1 | None | None | 2024-10-20 16:21:23.982392+00:00 | 1 |
negate/ unequal¶
ln.Artifact.filter(~ln.Q(suffix=".jpg")).df()
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| uid | version | is_latest | description | key | suffix | type | size | hash | n_objects | n_observations | _hash_type | _accessor | visibility | _key_is_virtual | storage_id | transform_id | run_id | created_at | created_by_id | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| id | ||||||||||||||||||||
| 2 | h7AnhVaYlbG7GmrN0000 | None | True | The iris collection | None | .parquet | dataset | 5629 | 5axHfO_2Pmlun2sJZHVuNg | None | None | md5 | DataFrame | 1 | True | 1 | None | None | 2024-10-20 16:21:23.975189+00:00 | 1 |
| 3 | bies9mwWlY7srbdv0000 | None | True | My fastq | None | .fastq.gz | None | 20 | hi7ZmAzz8sfMd3vIQr-57Q | None | None | md5 | None | 1 | True | 1 | None | None | 2024-10-20 16:21:23.982392+00:00 | 1 |
Clean up the test instance.
!rm -r ./test-registries
!lamin delete --force test-registries
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• deleting instance testuser1/test-registries