chore: import upstream snapshot with attribution

examples/python-sdk/data-quality/pg_scripts/init.sh

@@ -0,0 +1,83 @@
+#!/usr/bin/env bash
+
+psql -v ON_ERROR_STOP=1 --username "$POSTGRES_USER" --dbname "$POSTGRES_DB" <<-EOSQL
+  CREATE ROLE tutorial_user LOGIN PASSWORD 'password';
+  CREATE DATABASE raw;
+  CREATE DATABASE stg;
+EOSQL
+
+psql -v ON_ERROR_STOP=1 --username "$POSTGRES_USER" --dbname raw <<-EOSQL
+  -- Grant CONNECT so the user can access the database
+  GRANT CONNECT ON DATABASE raw TO tutorial_user;
+  
+  -- Grant USAGE on the schema (required to access tables)
+  GRANT USAGE ON SCHEMA public TO tutorial_user;
+  
+  -- Grant SELECT on all existing tables
+  GRANT SELECT ON ALL TABLES IN SCHEMA public TO tutorial_user;
+  
+  -- Ensure future tables are also readable
+  ALTER DEFAULT PRIVILEGES IN SCHEMA public
+  GRANT SELECT ON TABLES TO tutorial_user;
+
+  CREATE TABLE IF NOT EXISTS taxi_yellow (
+    VendorID int,
+    tpep_pickup_datetime timestamp,
+    tpep_dropoff_datetime timestamp,
+    passenger_count int,
+    trip_distance float,
+    RatecodeID int,
+    store_and_fwd_flag varchar,
+    PULocationID int,
+    PUZone varchar(16),
+    DOZone varchar(16),
+    DOLocationID int,
+    payment_type int,
+    fare_amount float,
+    extra float,
+    mta_tax float,
+    tip_amount float,
+    tolls_amount float,
+    improvement_surcharge float,
+    total_amount float,
+    congestion_surcharge float,
+    Airport_fee float,
+    cbd_congestion_fee float
+  );
+EOSQL
+
+
+psql -v ON_ERROR_STOP=1 --username "$POSTGRES_USER" --dbname stg <<-EOSQL
+  -- Grant CONNECT so the user can access the database
+  GRANT CONNECT ON DATABASE stg TO tutorial_user;
+
+  -- Grant USAGE on the schema (required to access tables)
+  GRANT USAGE ON SCHEMA public TO tutorial_user;
+
+  -- Grant SELECT on all existing tables
+  GRANT SELECT ON ALL TABLES IN SCHEMA public TO tutorial_user;
+
+  -- Ensure future tables are also readable
+  ALTER DEFAULT PRIVILEGES IN SCHEMA public
+  GRANT SELECT ON TABLES TO tutorial_user;
+
+  CREATE TABLE IF NOT EXISTS dw_taxi_trips (
+    vendor_id INT,
+    pickup_datetime TIMESTAMP,
+    dropoff_datetime TIMESTAMP,
+    passenger_count INT,
+    trip_distance FLOAT,
+    pu_location_id INT,
+    do_location_id INT,
+    payment_type INT,
+    fare_amount FLOAT,
+    tip_amount FLOAT,
+    total_amount FLOAT,
+    congestion_surcharge FLOAT,
+    pickup_hour SMALLINT,
+    pickup_dayofweek SMALLINT,
+    trip_duration_min FLOAT,
+    avg_speed_mph FLOAT,
+    trip_category VARCHAR(16)
+  );
+EOSQL