Add bootstrap script for Snowflake Parquet tables (#133)

snowflake/scripts/copy_into_each_parquet_table.sql

@@ -0,0 +1,63 @@
+/*
+  Copy Parquet data from its stage location into its respective table for all data types.
+
+  This is meant to be used from the CLI as a bootstrap script and is not designed
+  to be used as part of the data-loading process for a production pipeline.
+  Please refer to the stored procedure `copy_into_table_from_{datatype}_parquet_stage`
+  invoked by this script for the specifics of the `COPY INTO` command.
+
+  Command line variables:
+  database_name - The name of the database where our tables and stage exist.
+  schema_name - The name of the schema where our tables and stage exist.
+ */
+
+USE ROLE RECOVER_DATA_ENGINEER;
+USE WAREHOUSE RECOVER_XSMALL;
+USE DATABASE &{ database_name };
+USE SCHEMA &{ schema_name };
+WITH copy_into_each_parquet_table AS PROCEDURE ()
+  RETURNS VARCHAR
+  LANGUAGE SQL
+AS
+$$
+DECLARE
+  parquet_datatypes ARRAY := [
+    'enrolledparticipants_customfields_symptoms',
+    'enrolledparticipants_customfields_treatments',
+    'enrolledparticipants',
+    'fitbitactivitylogs',
+    'fitbitdailydata',
+    'fitbitdevices',
+    'fitbitecg',
+    'fitbitecg_waveformsamples',
+    'fitbitintradaycombined',
+    'fitbitrestingheartrates',
+    'fitbitsleeplogs',
+    'fitbitsleeplogs_sleeplogdetails',
+    'googlefitsamples',
+    'healthkitv2activitysummaries',
+    'healthkitv2electrocardiogram',
+    'healthkitv2electrocardiogram_subsamples',
+    'healthkitv2heartbeat',
+    'healthkitv2heartbeat_subsamples',
+    'healthkitv2samples',
+    'healthkitv2statistics',
+    'healthkitv2workouts_events',
+    'healthkitv2workouts',
+    'symptomlog',
+    'symptomlog_value_symptoms',
+    'symptomlog_value_treatments'
+  ];
+  datatype VARCHAR;
+  procedure_name VARCHAR;
+BEGIN
+  FOR i in 0 to array_size(:parquet_datatypes)-1 DO
+    datatype := GET(:parquet_datatypes, :i);
+    procedure_name := 'copy_into_table_from_' || :datatype || '_parquet_stage';
+    CALL IDENTIFIER(:procedure_name)(
+      target_table => :datatype
+    );
+  END FOR;
+END;
+$$
+CALL copy_into_each_parquet_table();