medicines-snowflake/docs/template_validation_status.md

Template Validation Status

Last reviewed: 2026-05-12

Scope

The reusable SQL templates in folders 01_medicine_lookups through 06_advanced_methods were checked with the Snowflake MCP against live table metadata and representative parameter values. Templates that use SET variables were validated by substituting safe example literals into the final SELECT statement before running describe_query.

The 00_copied_reference folder and docs/training_intro_snowflake_sql are historic/reference material. They are retained for learning and comparison, not as the preferred starting point for new analysis.

Live Metadata Checked

• REPORTING_DATASETS_ICB.SCRATCHPAD."MEDS__UnifiedPrescribingTable"
• NATIONAL.GPMED."MedicinesDispensedInPrimarycare"
• DATA_HUB.DWH."DimMedicineAndDevice"
• DATA_HUB.DWH."DimOrganisationAndSite"
• DATA_HUB.DWH."DimPerson"
• DATA_HUB.PHM."ClinicalCodingClusterSnomedCodes"
• DATA_HUB.PHM."PrimaryCareClinicalCoding"
• PRIMARY_CARE.TPP."SRPrimaryCareMedication"
• PRIMARY_CARE.TPP."SRPatient"

Query Compilation Checks

All files below passed Snowflake MCP describe_query validation:

• 01_medicine_lookups/medicine_reference_lookup.sql
• 01_medicine_lookups/prescribing_by_vtm.sql
• 01_medicine_lookups/prescribing_by_vmp.sql
• 01_medicine_lookups/dispensing_by_vtm_or_vmp.sql
• 01_medicine_lookups/prescribing_for_patient_pseudonym.sql
• 02_prescribing_analysis/practice_level_bnf_prescribing_summary.sql
• 02_prescribing_analysis/high_prescribing_practices_quintile_template.sql
• 02_prescribing_analysis/prescribing_spend_by_patient_template.sql
• 03_cohorts_and_clinical_coding/cluster_code_lookup.sql
• 03_cohorts_and_clinical_coding/monthly_clinical_event_count_by_practice.sql
• 03_cohorts_and_clinical_coding/prescribing_plus_clinical_code_cohort.sql
• 04_rolling_and_pqs/rolling_period_generator.sql
• 04_rolling_and_pqs/latest_data_dates.sql
• 04_rolling_and_pqs/baseline_vs_evaluation_template.sql
• 04_rolling_and_pqs/dual_source_long_format_measure_template.sql
• 05_audit_detail/human_readable_prescribing_detail.sql
• 06_advanced_methods/product_price_and_quantity_parsing_template.sql

Freshness Probe

The latest_data_dates.sql query was also executed with Snowflake MCP. At the time of review it returned:

• NATIONAL.GPMED."MedicinesDispensedInPrimarycare" latest ProcessingPeriodDate: 2025-07-01
• PRIMARY_CARE.TPP."SRPrimaryCareMedication" latest DateEventRecorded within the recent-window probe: 2026-03-28
• REPORTING_DATASETS_ICB.SCRATCHPAD."MEDS__UnifiedPrescribingTable" latest non-future DateMedicationStart: 2026-05-12