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ishaan-jaff 2023-07-29 07:06:56 -07:00
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docs/extras/integrations/document_loaders/google_bigquery.ipynb
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{
"cells": [
{
"cell_type": "markdown",
"metadata": {},
"source": [
"# Google BigQuery\n",
"\n",
">[Google BigQuery](https://cloud.google.com/bigquery) is a serverless and cost-effective enterprise data warehouse that works across clouds and scales with your data.\n",
"`BigQuery` is a part of the `Google Cloud Platform`.\n",
"\n",
"Load a `BigQuery` query with one document per row."
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {
"tags": []
},
"outputs": [],
"source": [
"#!pip install google-cloud-bigquery"
]
},
{
"cell_type": "code",
"execution_count": 3,
"metadata": {
"tags": []
},
"outputs": [],
"source": [
"from langchain.document_loaders import BigQueryLoader"
]
},
{
"cell_type": "code",
"execution_count": 3,
"metadata": {},
"outputs": [],
"source": [
"BASE_QUERY = \"\"\"\n",
"SELECT\n",
" id,\n",
" dna_sequence,\n",
" organism\n",
"FROM (\n",
" SELECT\n",
" ARRAY (\n",
" SELECT\n",
" AS STRUCT 1 AS id, \"ATTCGA\" AS dna_sequence, \"Lokiarchaeum sp. (strain GC14_75).\" AS organism\n",
" UNION ALL\n",
" SELECT\n",
" AS STRUCT 2 AS id, \"AGGCGA\" AS dna_sequence, \"Heimdallarchaeota archaeon (strain LC_2).\" AS organism\n",
" UNION ALL\n",
" SELECT\n",
" AS STRUCT 3 AS id, \"TCCGGA\" AS dna_sequence, \"Acidianus hospitalis (strain W1).\" AS organism) AS new_array),\n",
" UNNEST(new_array)\n",
"\"\"\""
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Basic Usage"
]
},
{
"cell_type": "code",
"execution_count": 6,
"metadata": {},
"outputs": [],
"source": [
"loader = BigQueryLoader(BASE_QUERY)\n",
"\n",
"data = loader.load()"
]
},
{
"cell_type": "code",
"execution_count": 7,
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"[Document(page_content='id: 1\\ndna_sequence: ATTCGA\\norganism: Lokiarchaeum sp. (strain GC14_75).', lookup_str='', metadata={}, lookup_index=0), Document(page_content='id: 2\\ndna_sequence: AGGCGA\\norganism: Heimdallarchaeota archaeon (strain LC_2).', lookup_str='', metadata={}, lookup_index=0), Document(page_content='id: 3\\ndna_sequence: TCCGGA\\norganism: Acidianus hospitalis (strain W1).', lookup_str='', metadata={}, lookup_index=0)]\n"
]
}
],
"source": [
"print(data)"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Specifying Which Columns are Content vs Metadata"
]
},
{
"cell_type": "code",
"execution_count": 8,
"metadata": {},
"outputs": [],
"source": [
"loader = BigQueryLoader(\n",
" BASE_QUERY,\n",
" page_content_columns=[\"dna_sequence\", \"organism\"],\n",
" metadata_columns=[\"id\"],\n",
")\n",
"\n",
"data = loader.load()"
]
},
{
"cell_type": "code",
"execution_count": 9,
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"[Document(page_content='dna_sequence: ATTCGA\\norganism: Lokiarchaeum sp. (strain GC14_75).', lookup_str='', metadata={'id': 1}, lookup_index=0), Document(page_content='dna_sequence: AGGCGA\\norganism: Heimdallarchaeota archaeon (strain LC_2).', lookup_str='', metadata={'id': 2}, lookup_index=0), Document(page_content='dna_sequence: TCCGGA\\norganism: Acidianus hospitalis (strain W1).', lookup_str='', metadata={'id': 3}, lookup_index=0)]\n"
]
}
],
"source": [
"print(data)"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Adding Source to Metadata"
]
},
{
"cell_type": "code",
"execution_count": 18,
"metadata": {},
"outputs": [],
"source": [
"# Note that the `id` column is being returned twice, with one instance aliased as `source`\n",
"ALIASED_QUERY = \"\"\"\n",
"SELECT\n",
" id,\n",
" dna_sequence,\n",
" organism,\n",
" id as source\n",
"FROM (\n",
" SELECT\n",
" ARRAY (\n",
" SELECT\n",
" AS STRUCT 1 AS id, \"ATTCGA\" AS dna_sequence, \"Lokiarchaeum sp. (strain GC14_75).\" AS organism\n",
" UNION ALL\n",
" SELECT\n",
" AS STRUCT 2 AS id, \"AGGCGA\" AS dna_sequence, \"Heimdallarchaeota archaeon (strain LC_2).\" AS organism\n",
" UNION ALL\n",
" SELECT\n",
" AS STRUCT 3 AS id, \"TCCGGA\" AS dna_sequence, \"Acidianus hospitalis (strain W1).\" AS organism) AS new_array),\n",
" UNNEST(new_array)\n",
"\"\"\""
]
},
{
"cell_type": "code",
"execution_count": 19,
"metadata": {},
"outputs": [],
"source": [
"loader = BigQueryLoader(ALIASED_QUERY, metadata_columns=[\"source\"])\n",
"\n",
"data = loader.load()"
]
},
{
"cell_type": "code",
"execution_count": 20,
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"[Document(page_content='id: 1\\ndna_sequence: ATTCGA\\norganism: Lokiarchaeum sp. (strain GC14_75).\\nsource: 1', lookup_str='', metadata={'source': 1}, lookup_index=0), Document(page_content='id: 2\\ndna_sequence: AGGCGA\\norganism: Heimdallarchaeota archaeon (strain LC_2).\\nsource: 2', lookup_str='', metadata={'source': 2}, lookup_index=0), Document(page_content='id: 3\\ndna_sequence: TCCGGA\\norganism: Acidianus hospitalis (strain W1).\\nsource: 3', lookup_str='', metadata={'source': 3}, lookup_index=0)]\n"
]
}
],
"source": [
"print(data)"
]
}
],
"metadata": {
"kernelspec": {
"display_name": "Python 3 (ipykernel)",
"language": "python",
"name": "python3"
},
"language_info": {
"codemirror_mode": {
"name": "ipython",
"version": 3
},
"file_extension": ".py",
"mimetype": "text/x-python",
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
"version": "3.10.6"
}
},
"nbformat": 4,
"nbformat_minor": 4
}