def main():
noaa_goes = BigQueryHelper(active_project="bigquery-public-data",
dataset_name="noaa_goes16")
noaa_goes.list_tables()
noaa_goes.table_schema('abi_l1b_radiance')
print(noaa_goes.head("abi_l1b_radiance", num_rows=10))
query = """
SELECT dataset_name, platform_id, scene_id FROM `bigquery-public-data.noaa_goes16.abi_l1b_radiance` WHERE geospatial_westbound_longitude<120 and geospatial_eastbound_longitude>75 and geospatial_northbound_latitude<50 and geospatial_southbound_latitude>30
"""
print("Query size in GB is %f " % noaa_goes.estimate_query_size(query))
class TestBQHelper(unittest.TestCase):
def setUp(self):
self.my_bq = BigQueryHelper("bigquery-public-data", "openaq")
self.query = "SELECT location FROM `bigquery-public-data.openaq.global_air_quality`"
# Query randomized so it won't hit the cache across multiple test runs
self.randomizable_query = """
SELECT value FROM `bigquery-public-data.openaq.global_air_quality`
WHERE value = {0}"""
def test_list_tables(self):
self.assertEqual(self.my_bq.list_tables(), ['global_air_quality'])
def test_list_schema(self):
self.assertEqual(len(self.my_bq.table_schema('global_air_quality')),
11)
def test_estimate_query_size(self):
self.assertIsInstance(self.my_bq.estimate_query_size(self.query),
float)
def test_query_to_pandas(self):
self.assertIsInstance(self.my_bq.query_to_pandas(self.query),
DataFrame)
def test_query_safe_passes(self):
self.assertIsInstance(self.my_bq.query_to_pandas_safe(self.query),
DataFrame)
def test_query_safe_fails(self):
# Different query must be used for this test to ensure we don't hit the
# cache and end up passing by testing a query that would use zero bytes.
fail_query = self.randomizable_query.format(random())
self.assertIsNone(self.my_bq.query_to_pandas_safe(fail_query, 10**-10))
def test_head(self):
self.assertIsInstance(self.my_bq.head('global_air_quality'), DataFrame)
def test_useage_tracker(self):
self.my_bq.query_to_pandas(self.randomizable_query.format(random()))
self.assertNotEqual(self.my_bq.total_gb_used_net_cache, 0)
def test_bad_query_raises_right_error(self):
with self.assertRaises(BadRequest):
self.my_bq.query_to_pandas("Not a valid query")
def test_list_nested_schema(self):
nested_helper = BigQueryHelper("bigquery-public-data", "github_repos")
self.assertEqual(len(nested_helper.table_schema('commits')), 33)
#
#
# ### Lets find the addresses who have the most number of bitcoins
# In[ ]:
q = """
SELECT o.output_pubkey_base58, sum(o.output_satoshis) as output_sum from
`bigquery-public-data.bitcoin_blockchain.transactions`JOIN
UNNEST(outputs) as o
where o.output_pubkey_base58 not in (select i.input_pubkey_base58
from UNNEST(inputs) as i)
group by o.output_pubkey_base58 order by output_sum desc limit 1000
"""
print(str(round((bq_assistant.estimate_query_size(q)), 2)) + str(" GB"))
results2 = bq.Run_Query(q, max_gb_scanned=70)
results2["output_sum"] = results2["output_sum"].apply(
lambda x: float(x / 100000000))
# In[ ]:
import matplotlib.pyplot as plt
plt.rcdefaults()
import numpy as np
import matplotlib.pyplot as plt
objects = results2["output_pubkey_base58"][:10]
y_pos = np.arange(len(objects))
performance = results2["output_sum"][:10]
plt.bar(y_pos, performance, align='center', alpha=0.5)
# This Python 3 environment comes with many helpful analytics libraries installed
# It is defined by the kaggle/python docker image: https://github.com/kaggle/docker-python
# For example, here's several helpful packages to load in
from bq_helper import BigQueryHelper
bq_assistant = BigQueryHelper("bigquery-public-data", "github_repos")
QUERY = """
SELECT message
FROM `bigquery-public-data.github_repos.commits`
WHERE LENGTH(message) > 6 AND LENGTH(message) <= 20
LIMIT 2000
"""
bq_assistant.estimate_query_size(QUERY)
bq_assistant.listtables()
# Any results you write to the current directory are saved as output.
def GLquery(query="query1",
country="US",
start_year="1790",
end_year="2019",
min_count="100",
kind_code="B2",
cpc_code="A63F",
assignee="President and Fellows of Harvard College",
keyword="internet of things",
budget=1000,
output_to_csv=False,
plot=False,
ask_before_running=False):
'''
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
FUNCTION PARAMETERS
GLquery takes the following arguments:
- query (string): choose among one of the options in the next section (see below) (default is "query1")
- country (string) = format "LL" (default is "US")
- start_year (string) = format "YYYY" (default is "1790")
- end_year (string) = format "YYYY" (default is "2019")
- min_count (string) = minimum threshold (default is "100")
- kind_code (string) = format "LN", see kind codes here: https://www.cas.org/support/documentation/references/patkind (default is "B2")
- cpc_code (string) = formant "LNNL", see CPC codes here: https://www.uspto.gov/web/patents/classification/cpc/html/cpc.html (default is "A63F")
- assignee (string) = any format (case sensitive) (default is "President and Fellows of Harvard College")
- keyword (string) = any format (case sensitive) (default is "internet of things")
- budget (number) = any number (default is 1.000 GB) (queries above value 'budget' will not run; queries below 'budget' will use only the minimum amount of memory necessary to run the query, not the full value of 'budget')
- output_to_csv (True or False) = output results as .csv file to your current working directory (default is False)
- plot (True of False) = plot results as .pdf file to your current working directory (default is False) (implemented for queries 1, 2, 3, 10)
- ask_before_running (True or False) = given a query size (in GB), asks user input before running the query (default is False)
///////////////////////////////////////////////////////////////////////////////
QUERIES
As of June/2019, GLquery can perform the following queries:
- query1: Number of patent applications by country (takes no inputs)
- query2: Number of patents published between years X and Y by country (necessary arguments: start_year and end_year)
- query3: Number of patents published to country Z between years X and Y (necessary arguments: start_year, end_year and country)
- query4: Which patents country Z published between years X and Y? (necessary arguments: start_year, end_year, country, kind_code)
- query5: Most common patenting technology areas by year (takes no inputs)
- query6: Most common patenting technology areas in country Z between years X and Y (necessary arguments: start_year, end_year and country)
- query7: Inventors with over N patents by country (necessary arguments: min_count)
- query8: Patent landscaping of technology T between years X and Y" (necessary arguments: start_year, end_year, min_count and cpc_code) (this query returns patents, firms and countries associated with technology T)
- query9: Which firms is assignee A citing in their patents? (necessary arguments: assignee)
- query10: Number of patent applications with keyword K in country Z (necessary arguments: country and keyword)
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
'''
global my_output_path
patents = bq_helper.BigQueryHelper(active_project="patents-public-data",
dataset_name="patents")
bq_assistant = BigQueryHelper("patents-public-data", "patents")
print("Country selected: {}.".format(country))
print("Period selected: from {} to {}.".format(start_year, end_year))
def replace(string, substitutions):
substrings = sorted(substitutions, key=len, reverse=True)
regex = re.compile('|'.join(map(re.escape, substrings)))
return regex.sub(lambda match: substitutions[match.group(0)], string)
def query_selector(query):
switcher = {
"query1":
"""
-- "Number of publications by country"
SELECT COUNT(*) AS cnt, country_code
FROM (
SELECT ANY_VALUE(country_code) AS country_code
FROM `patents-public-data.patents.publications`
GROUP BY application_number)
GROUP BY country_code
ORDER BY cnt DESC
""",
"query2":
replace(
"""
-- "Number of patents published between years X and Y by country"
SELECT country_code,
COUNT(DISTINCT publication_number) AS publications
FROM `patents-public-data.patents.publications`
WHERE publication_date >= XXXX0000
AND publication_date < YYYY0000
AND application_kind = 'A'
GROUP BY country_code
ORDER BY publications DESC
""", {
"XXXX": start_year,
"YYYY": end_year
}),
"query3":
replace(
"""
-- "Number of patents granted to country Z between years X and Y"
SELECT FLOOR(publication_date/10000) as datum,
COUNT(DISTINCT publication_number) as publications
FROM `patents-public-data.patents.publications`
WHERE country_code = 'ZZZZ'
AND publication_date >= XXXX0000
AND publication_date <= YYYY0000
AND application_kind = 'A'
GROUP BY datum, application_kind
ORDER BY application_kind, datum
""", {
"XXXX": start_year,
"YYYY": end_year,
"ZZZZ": country
}),
"query4":
replace(
"""
-- "Which patents country Z published between years X and Y"
SELECT publication_number
FROM `patents-public-data.patents.publications`
WHERE country_code = 'ZZZZ'
AND publication_date >= XXXX0000
AND publication_date <= YYYY0000
AND application_kind = 'A'
AND kind_code = 'BBBB'
""", {
"XXXX": start_year,
"YYYY": end_year,
"ZZZZ": country,
"BBBB": kind_code
}),
"query5":
"""
-- "Most common patenting technology areas by year"
CREATE TEMPORARY FUNCTION highest_moving_avg(yearcnt ARRAY<STRUCT<filing_year INT64, cnt INT64>>)
RETURNS STRUCT<filing_year INT64, avg INT64>
LANGUAGE js AS \"""
let avg = 0;
let a = 1.0;
let highest = {filing_year: -1, avg: -1};
for (let x of yearcnt) {
avg = a * x.cnt + (1 - a) * avg;
if (avg > highest.avg) {
highest = {filing_year: x.filing_year, avg: avg};}
}
return highest;
\""";
WITH patent_cpcs AS (
SELECT cd.parents,
CAST(FLOOR(filing_date/10000) AS INT64) AS filing_year
FROM (
SELECT ANY_VALUE(cpc) AS cpc, ANY_VALUE(filing_date) AS filing_date
FROM `patents-public-data.patents.publications`
WHERE application_number != ""
GROUP BY application_number), UNNEST(cpc) AS cpcs
JOIN `patents-public-data.cpc.definition` cd ON cd.symbol = cpcs.code
WHERE cpcs.first = TRUE AND filing_date > 0)
SELECT c.title_full, cpc_group, best_year.*
FROM (
SELECT cpc_group, highest_moving_avg(ARRAY_AGG(STRUCT<filing_year INT64, cnt INT64>(filing_year, cnt) ORDER BY filing_year ASC)) AS best_year
FROM (
SELECT cpc_group, filing_year, COUNT(*) AS cnt
FROM (
SELECT cpc_parent AS cpc_group, filing_year
FROM patent_cpcs, UNNEST(parents) AS cpc_parent)
GROUP BY cpc_group, filing_year
ORDER BY filing_year DESC, cnt DESC)
GROUP BY cpc_group)
JOIN `patents-public-data.cpc.definition` c ON cpc_group = c.symbol
WHERE c.level = 5
ORDER BY best_year.filing_year ASC;
""",
"query6":
replace(
"""
-- "Most common patenting technology areas in country Z between years X and Y"
CREATE TEMPORARY FUNCTION highest_moving_avg(yearcnt ARRAY<STRUCT<filing_year INT64, cnt INT64>>)
RETURNS STRUCT<filing_year INT64, avg INT64>
LANGUAGE js AS \"""
let avg = 0;
let a = 1.0;
let highest = {filing_year: -1, avg: -1};
for (let x of yearcnt) {
avg = a * x.cnt + (1 - a) * avg;
if (avg > highest.avg) {
highest = {filing_year: x.filing_year, avg: avg};}
}
return highest;
\""";
WITH patent_cpcs AS (
SELECT cd.parents,
CAST(FLOOR(filing_date/10000) AS INT64) AS filing_year
FROM (
SELECT ANY_VALUE(cpc) AS cpc, ANY_VALUE(filing_date) AS filing_date
FROM `patents-public-data.patents.publications`
WHERE application_number != ""
AND country_code = 'ZZZZ'
AND grant_date >= XXXX0000
AND grant_date <= YYYY0000
GROUP BY application_number), UNNEST(cpc) AS cpcs
JOIN `patents-public-data.cpc.definition` cd ON cd.symbol = cpcs.code
WHERE cpcs.first = TRUE AND filing_date > 0)
SELECT c.title_full, cpc_group, best_year.*
FROM (
SELECT cpc_group, highest_moving_avg(ARRAY_AGG(STRUCT<filing_year INT64, cnt INT64>(filing_year, cnt) ORDER BY filing_year ASC)) AS best_year
FROM (
SELECT cpc_group, filing_year, COUNT(*) AS cnt
FROM (
SELECT cpc_parent AS cpc_group, filing_year
FROM patent_cpcs, UNNEST(parents) AS cpc_parent)
GROUP BY cpc_group, filing_year
ORDER BY filing_year DESC, cnt DESC)
GROUP BY cpc_group)
JOIN `patents-public-data.cpc.definition` c ON cpc_group = c.symbol
WHERE c.level = 5
ORDER BY best_year.filing_year ASC;
""", {
"XXXX": start_year,
"YYYY": end_year,
"ZZZZ": country
}),
"query7":
replace(
"""
-- "Inventors with over N patents by country"
WITH temp1 AS (
SELECT DISTINCT PUB.country_code,
PUB.application_number AS patent_number, inventor_name
FROM `patents-public-data.patents.publications` PUB
CROSS JOIN
UNNEST(PUB.inventor) AS inventor_name
WHERE PUB.grant_date >= 1790000
AND PUB.country_code IS NOT NULL
AND PUB.application_number IS NOT NULL
AND PUB.inventor IS NOT NULL)
SELECT * FROM (
SELECT temp1.country_code AS country, temp1.inventor_name AS inventor,
COUNT(temp1.patent_number) AS count_of_patents
FROM temp1
GROUP BY temp1.country_code, temp1.inventor_name)
WHERE count_of_patents >= NNNN
""", {"NNNN": min_count}),
"query8":
replace(
"""
-- "Patent landscaping of technology T between years X and Y"
SELECT SUM(year_cnt) AS total_count, assignee_name,
ARRAY_AGG(STRUCT<cnt INT64, filing_year INT64, countries STRING>(year_cnt, filing_year, countries) ORDER BY year_cnt DESC LIMIT 1)[SAFE_ORDINAL(1)] AS Number_of_patents_under_this_CPC_code_Peak_year_Top_countries
FROM (
SELECT SUM(year_country_cnt) AS year_cnt, assignee_name, filing_year, STRING_AGG(country_code ORDER BY year_country_cnt DESC LIMIT 5) AS countries
FROM (
SELECT COUNT(*) AS year_country_cnt, a.name AS assignee_name, CAST(FLOOR(filing_date/10000) AS INT64) AS filing_year, apps.country_code
FROM (
SELECT ANY_VALUE(assignee_harmonized) AS assignee_harmonized, ANY_VALUE(filing_date) AS filing_date, ANY_VALUE(country_code) AS country_code
FROM `patents-public-data.patents.publications` AS pubs
WHERE (SELECT MAX(TRUE) FROM UNNEST(pubs.cpc) AS c WHERE REGEXP_CONTAINS(c.code, "TTTT"))
AND publication_date >= XXXX0000
AND publication_date <= YYYY0000
GROUP BY application_number) AS apps, UNNEST(assignee_harmonized) AS a
WHERE filing_date > 0
GROUP BY a.name, filing_year, country_code)
GROUP BY assignee_name, filing_year)
GROUP BY assignee_name
ORDER BY total_count DESC
LIMIT NNNN
""", {
"XXXX": start_year,
"YYYY": end_year,
"NNNN": min_count,
"TTTT": cpc_code
}),
"query9":
replace(
"""
-- "Which firms is assignee A citing in their patents?"
SELECT citing_assignee,
COUNT(*) AS num_cites, citing_cpc_subclass, cpcdef.title_full AS citing_cpc_title
FROM (
SELECT pubs.publication_number AS citing_publication_number, cite.publication_number AS cited_publication_number, citing_assignee_s.name AS citing_assignee, SUBSTR(cpcs.code, 0, 4) AS citing_cpc_subclass
FROM `patents-public-data.patents.publications` AS pubs, UNNEST(citation) AS cite, UNNEST(assignee_harmonized) AS citing_assignee_s, UNNEST(cpc) AS cpcs
WHERE cpcs.first = TRUE) AS pubs
JOIN (
SELECT publication_number AS cited_publication_number, cited_assignee_s.name AS cited_assignee
FROM `patents-public-data.patents.publications`, UNNEST(assignee_harmonized) AS cited_assignee_s) AS refs ON pubs.cited_publication_number = refs.cited_publication_number
JOIN `patents-public-data.cpc.definition` AS cpcdef ON cpcdef.symbol = citing_cpc_subclass
WHERE cited_assignee = "AAAA" AND citing_assignee != "AAAA"
GROUP BY cited_assignee, citing_assignee, citing_cpc_subclass, cpcdef.title_full
ORDER BY num_cites DESC
""", {"AAAA": assignee}),
"query10":
replace(
"""
-- Number of patent applications with keyword K in country Z
WITH Patent_Matches AS (
SELECT PARSE_DATE('%Y%m%d', SAFE_CAST(ANY_VALUE(patentsdb.filing_date) AS STRING)) AS Patent_Filing_Date, patentsdb.application_number AS Patent_Application_Number,
ANY_VALUE(abstract_info.text) AS Patent_Title,
ANY_VALUE(abstract_info.language) AS Patent_Title_Language
FROM `patents-public-data.patents.publications` AS patentsdb,
UNNEST(abstract_localized) AS abstract_info
WHERE
LOWER(abstract_info.text) LIKE '%KKKK%'
AND patentsdb.country_code = 'ZZZZ'
GROUP BY Patent_Application_Number),
Date_Series_Table AS (
SELECT day, 0 AS Number_of_Patents
FROM UNNEST (GENERATE_DATE_ARRAY(
(SELECT MIN(Patent_Filing_Date) FROM Patent_Matches),
(SELECT MAX(Patent_Filing_Date) FROM Patent_Matches))) AS day)
SELECT SAFE_CAST(FORMAT_DATE('%Y-%m',Date_Series_Table.day) AS STRING) AS Patent_Date_YearMonth, COUNT(Patent_Matches.Patent_Application_Number) AS Number_of_Patent_Applications
FROM Patent_Matches
RIGHT JOIN Date_Series_Table
ON Patent_Matches.Patent_Filing_Date = Date_Series_Table.day
GROUP BY Patent_Date_YearMonth
ORDER BY Patent_Date_YearMonth
""", {
"ZZZZ": country,
"KKKK": keyword
}),
}
return switcher.get(query, "Invalid query")
print("Estimated query size: {} GB.".format(
bq_assistant.estimate_query_size(query_selector(query))))
def kenvelo(question, answer="no"):
range_of_choices = {
"yes": True,
"y": True,
"": True,
"no": False,
"n": False
}
if answer is None:
prompt = "[Y/N]"
elif answer == "yes":
prompt = "[Y/N]"
elif answer == "no":
prompt = "[Y/N]"
else:
raise ValueError("Answer '%s' is invalid.")
while True:
sys.stdout.write(question + prompt)
choice = input().lower()
if answer is not None and choice == '':
return range_of_choices[answer]
elif choice in range_of_choices:
return range_of_choices[choice]
else:
sys.stdout.write(
"Please answer any variation of 'yes' or 'no'. ")
while ask_before_running is False or kenvelo("Run query? "):
def plot_query1():
figure(num=None, figsize=(24, 16), facecolor='w', edgecolor='k')
sns.set(context='paper', style='ticks', font_scale=0.9)
sns.barplot(x='country_code',
y='cnt',
data=patents.query_to_pandas_safe(
query_selector("query1"),
max_gb_scanned=bq_assistant.estimate_query_size(
query_selector("query1"))))
plt.title("Number of publications by country",
loc='left',
fontsize=24,
style='oblique')
plt.ylabel('# of publications (log)', fontsize=14)
plt.xlabel('Country', fontsize=14)
plt.yscale('log')
sns.despine(offset=10, trim=True)
plt.savefig(my_output_path + "query1" + '.pdf',
orientation='landscape',
bbox_inches='tight')
plt.show()
def plot_query2():
figure(num=None, figsize=(24, 16), facecolor='w', edgecolor='k')
sns.set(context='paper', style='ticks', font_scale=0.9)
sns.barplot(x='country_code',
y='publications',
data=patents.query_to_pandas_safe(
query_selector("query2"),
max_gb_scanned=bq_assistant.estimate_query_size(
query_selector("query2"))))
plt.title(
"Number of patents published between years {} and {} by country"
.format(start_year, end_year),
loc='left',
fontsize=24,
style='oblique')
plt.ylabel('# of publications')
plt.xlabel('Country')
plt.yscale('log')
sns.despine(offset=10, trim=True)
plt.savefig(my_output_path + "query2" + '.pdf',
orientation='landscape',
bbox_inches='tight')
plt.show()
def plot_query3():
figure(num=None, figsize=(24, 16), facecolor='w', edgecolor='k')
sns.set(context='paper', style='ticks', font_scale=0.9)
sns.barplot(x='datum',
y='publications',
data=patents.query_to_pandas_safe(
query_selector("query3"),
max_gb_scanned=bq_assistant.estimate_query_size(
query_selector("query3"))))
plt.title(
"Number of patents granted to country {} between years {} and {}"
.format(country, start_year, end_year),
loc='left',
fontsize=24,
style='oblique')
plt.ylabel('# of patents', fontsize=14)
plt.xlabel('')
sns.despine(offset=10, trim=True)
plt.savefig(my_output_path + "query3" + '.pdf',
orientation='landscape',
bbox_inches='tight')
plt.show()
def plot_query10():
figure(num=None, figsize=(24, 16), facecolor='w', edgecolor='k')
sns.set(context='paper', style='ticks', font_scale=0.9)
sns.barplot(x='Patent_Date_YearMonth',
y='Number_of_Patent_Applications',
data=patents.query_to_pandas_safe(
query_selector("query10"),
max_gb_scanned=bq_assistant.estimate_query_size(
query_selector("query10"))))
plt.title(
"Number of patent applications of technology {} in country {}".
format(keyword, country),
loc='left',
fontsize=24,
style='oblique')
plt.ylabel('# of applications', fontsize=14)
plt.xlabel('Date', fontsize=14, rotation=45)
sns.despine(offset=10, trim=True)
plt.savefig(my_output_path + "query10" + '.pdf',
orientation='landscape',
bbox_inches='tight')
plt.show()
def plotter(query):
if query == "query1":
plot_query1()
query = "query2"
elif query == "query2":
plot_query2()
query = "query3"
elif query == "query3":
plot_query3()
query = "query10"
elif query == "query10":
plot_query10()
else:
print('\033[1m' +
"Sorry, this query doesn't output graphs (yet)." +
'\033[0m')
temp_path = Path(my_output_path)
if output_to_csv and plot:
return patents.query_to_pandas_safe(
query_selector(query),
max_gb_scanned=min(
budget,
bq_assistant.estimate_query_size(
query_selector(query)))).to_csv(
Path(temp_path, query + '.csv'),
index=False,
encoding="utf-8"), plotter(query)
if output_to_csv:
return patents.query_to_pandas_safe(
query_selector(query),
max_gb_scanned=min(
budget,
bq_assistant.estimate_query_size(
query_selector(query)))).to_csv(Path(
temp_path, query + '.csv'),
index=False,
encoding="utf-8")
if plot:
return plotter(query)
else:
return patents.query_to_pandas_safe(
query_selector(query),
max_gb_scanned=min(
budget,
bq_assistant.estimate_query_size(query_selector(query))))
if kenvelo("You will use",
bq_assistant.estimate_query_size(query_selector(query)),
"GB in this query. Continue? ") is False:
break
import os
os.environ["GOOGLE_APPLICATION_CREDENTIALS"] = "keys.json"
import pandas as pd
from bq_helper import BigQueryHelper
bq_assistant = BigQueryHelper('bigquery-public-data', 'new_york')
QUERY = """
SELECT * FROM `bigquery-public-data.new_york.citibike_trips`
"""
print(bq_assistant.estimate_query_size(QUERY)) #4.5 GB
QUERY = """
SELECT * FROM `bigquery-public-data.new_york.citibike_trips`
LIMIT 100
"""
df = bq_assistant.query_to_pandas(QUERY)
print(df.head(10))
import os
os.environ["GOOGLE_APPLICATION_CREDENTIALS"] = "key.json"
from bq_helper import BigQueryHelper
client = BigQueryHelper('bigquery-public-data', 'stackoverflow')
QUERY = """
SELECT * FROM `bigquery-public-data.stackoverflow.comments`
"""
print(client.estimate_query_size(QUERY)) #13.3 GB
bq_assistant = BigQueryHelper('bigquery-public-data', 'new_york')
QUERY = """
SELECT * FROM `bigquery-public-data.new_york.citibike_trips`
"""
print(bq_assistant.estimate_query_size(QUERY)) #4.6 GB
block_timestamp,
from_address,
to_address,
value,
receipt_contract_address,
receipt_status,
block_number
FROM
`bigquery-public-data.ethereum_blockchain.transactions` AS transactions
WHERE TRUE
AND block_timestamp < '2017-01-01 00:00:00'
"""
# This establishes an authenticated session and prepares a reference to the dataset that lives in BigQuery.
bq_assistant = BigQueryHelper("bigquery-public-data", "ethereum_blockchain")
print("estimated query data size: " +
str(bq_assistant.estimate_query_size(query)))
df = bq_assistant.query_to_pandas_safe(query, max_gb_scanned=60)
df.to_csv(
"/home/yueduan/yueduan/postdoc_study/ether_transactions_before2017.csv")
# # Import dataset from big query
# from google.cloud import bigquery
# from bq_helper import BigQueryHelper
# import matplotlib.pyplot as plt
# import seaborn as sns
# import pandas as pd
# #%matplotlib inline
# plt.style.use('ggplot')
# sns.set_context("notebook", font_scale=1.5, rc={"lines.linewidth": 2.5})
