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Harrison/big query (#2100)
Co-authored-by: lu-cashmoney <lucas.corley@gmail.com>
This commit is contained in:
Harrison Chase
GitHub
202
docs/modules/indexes/document_loaders/examples/bigquery.ipynb
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202
docs/modules/indexes/document_loaders/examples/bigquery.ipynb
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{
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"cells": [
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"# BigQuery Loader\n",
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"\n",
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"Load a BigQuery query with one document per row."
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]
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},
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{
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"cell_type": "code",
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"execution_count": 1,
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"metadata": {},
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"outputs": [],
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"source": [
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"from langchain.document_loaders import BigQueryLoader"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 3,
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"metadata": {},
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"outputs": [],
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"source": [
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"BASE_QUERY = '''\n",
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"SELECT\n",
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" id,\n",
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" dna_sequence,\n",
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" organism\n",
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"FROM (\n",
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" SELECT\n",
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" ARRAY (\n",
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" SELECT\n",
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" AS STRUCT 1 AS id, \"ATTCGA\" AS dna_sequence, \"Lokiarchaeum sp. (strain GC14_75).\" AS organism\n",
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" UNION ALL\n",
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" SELECT\n",
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" AS STRUCT 2 AS id, \"AGGCGA\" AS dna_sequence, \"Heimdallarchaeota archaeon (strain LC_2).\" AS organism\n",
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" UNION ALL\n",
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" SELECT\n",
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" AS STRUCT 3 AS id, \"TCCGGA\" AS dna_sequence, \"Acidianus hospitalis (strain W1).\" AS organism) AS new_array),\n",
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" UNNEST(new_array)\n",
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"'''"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"## Basic Usage"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 6,
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"metadata": {},
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"outputs": [],
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"source": [
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"loader = BigQueryLoader(BASE_QUERY)\n",
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"\n",
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"data = loader.load()"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 7,
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"metadata": {},
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"[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"
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]
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}
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],
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"source": [
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"print(data)"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"## Specifying Which Columns are Content vs Metadata"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 8,
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"metadata": {},
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"outputs": [],
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"source": [
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"loader = BigQueryLoader(BASE_QUERY, page_content_columns=[\"dna_sequence\", \"organism\"], metadata_columns=[\"id\"])\n",
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"\n",
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"data = loader.load()"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 9,
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"metadata": {},
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"[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"
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]
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}
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],
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"source": [
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"print(data)"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"## Adding Source to Metadata"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 18,
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"metadata": {},
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"outputs": [],
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"source": [
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"# Note that the `id` column is being returned twice, with one instance aliased as `source`\n",
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"ALIASED_QUERY = '''\n",
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"SELECT\n",
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" id,\n",
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" dna_sequence,\n",
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" organism,\n",
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" id as source\n",
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"FROM (\n",
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" SELECT\n",
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" ARRAY (\n",
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" SELECT\n",
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" AS STRUCT 1 AS id, \"ATTCGA\" AS dna_sequence, \"Lokiarchaeum sp. (strain GC14_75).\" AS organism\n",
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" UNION ALL\n",
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" SELECT\n",
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" AS STRUCT 2 AS id, \"AGGCGA\" AS dna_sequence, \"Heimdallarchaeota archaeon (strain LC_2).\" AS organism\n",
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" UNION ALL\n",
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" SELECT\n",
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" AS STRUCT 3 AS id, \"TCCGGA\" AS dna_sequence, \"Acidianus hospitalis (strain W1).\" AS organism) AS new_array),\n",
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" UNNEST(new_array)\n",
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"'''"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 19,
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"metadata": {},
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"outputs": [],
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"source": [
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"loader = BigQueryLoader(ALIASED_QUERY, metadata_columns=[\"source\"])\n",
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"\n",
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"data = loader.load()"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 20,
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"metadata": {},
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"[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"
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]
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}
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],
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"source": [
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"print(data)"
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]
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}
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],
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"metadata": {
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"kernelspec": {
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"display_name": "Python 3 (ipykernel)",
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"language": "python",
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"name": "python3"
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},
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"language_info": {
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"codemirror_mode": {
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"name": "ipython",
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"version": 3
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},
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"file_extension": ".py",
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"mimetype": "text/x-python",
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"name": "python",
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"nbconvert_exporter": "python",
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"pygments_lexer": "ipython3",
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"version": "3.9.1"
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}
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},
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"nbformat": 4,
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"nbformat_minor": 2
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}
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