how to save query data into dataframe pscopg2
import pandas as pd
import pandas.io.sql as sqlio
import psycopg2
conn = psycopg2.connect("host='{}' port={} dbname='{}' user={} password={}".format(host, port, dbname, username, pwd))
sql = "select count(*) from table;"
dat = sqlio.read_sql_query(sql, conn)
conn = Nonepostgresql export output table as a csv
COPY table_name TO 'file_name.csv' DELIMITER ',' CSV HEADER;run postgresql dump to csv
copy (SELECT * FROM persons) to 'C:tmppersons_client.csv' with csvCopyright © 2021 Codeinu
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