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# Copyright 2014 Observational Health Data Sciences and Informatics
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# Licensed under the Apache License, Version 2.0 (the "License");
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script to create the required indexes within OMOP common data model, version 5.0 for SQL Server database

last revised: 12 Oct 2014

author:  Patrick Ryan

description:  These indices are considered a minimal requirement to ensure adequate performance of analyses.

*************************/


/************************

Standardized vocabulary

************************/

CREATE UNIQUE CLUSTERED INDEX idx_concept_concept_id ON concept (concept_id ASC);
CREATE INDEX idx_concept_code ON concept (concept_code ASC);
CREATE INDEX idx_concept_vocabluary_id ON concept (vocabulary_id ASC);
CREATE INDEX idx_concept_domain_id ON concept (domain_id ASC);
CREATE INDEX idx_concept_class_id ON concept (concept_class_id ASC);

CREATE UNIQUE CLUSTERED INDEX idx_vocabulary_vocabulary_id ON vocabulary (vocabulary_id ASC);

CREATE UNIQUE CLUSTERED INDEX idx_domain_domain_id ON domain (domain_id ASC);

CREATE UNIQUE CLUSTERED INDEX idx_concept_class_class_id ON concept_class (concept_class_id ASC);

CREATE INDEX idx_concept_relationship_id_1 ON concept_relationship (concept_id_1 ASC); 
CREATE INDEX idx_concept_relationship_id_2 ON concept_relationship (concept_id_2 ASC); 
CREATE INDEX idx_concept_relationship_id_3 ON concept_relationship (relationship_id ASC); 

CREATE UNIQUE CLUSTERED INDEX idx_relationship_rel_id ON relationship (relationship_id ASC);

CREATE CLUSTERED INDEX idx_concept_synonym_id ON concept_synonym (concept_id ASC);

CREATE CLUSTERED INDEX idx_concept_ancestor_id_1 ON concept_ancestor (ancestor_concept_id ASC);
CREATE INDEX idx_concept_ancestor_id_2 ON concept_ancestor (descendant_concept_id ASC);

CREATE CLUSTERED INDEX idx_source_to_concept_map_id_3 ON source_to_concept_map (target_concept_id ASC);
CREATE INDEX idx_source_to_concept_map_id_1 ON source_to_concept_map (source_vocabulary_id ASC);
CREATE INDEX idx_source_to_concept_map_id_2 ON source_to_concept_map (target_vocabulary_id ASC);
CREATE INDEX idx_source_to_concept_map_code ON source_to_concept_map (source_code ASC);

CREATE CLUSTERED INDEX idx_drug_strength_id_1 ON drug_strength (drug_concept_id ASC);
CREATE INDEX idx_drug_strength_id_2 ON drug_strength (ingredient_concept_id ASC);

CREATE CLUSTERED INDEX idx_cohort_definition_id ON cohort_definition (cohort_definition_id ASC);

CREATE CLUSTERED INDEX idx_attribute_definition_id ON attribute_definition (attribute_definition_id ASC);


/**************************

Standardized meta-data

***************************/





/************************

Standardized clinical data

************************/

CREATE UNIQUE CLUSTERED INDEX idx_person_id ON person (person_id ASC);

CREATE CLUSTERED INDEX idx_observation_period_id ON observation_period (person_id ASC);

CREATE CLUSTERED INDEX idx_specimen_person_id ON specimen (person_id ASC);
CREATE INDEX idx_specimen_concept_id ON specimen (specimen_concept_id ASC);

CREATE CLUSTERED INDEX idx_death_person_id ON death (person_id ASC);

CREATE CLUSTERED INDEX idx_visit_person_id ON visit_occurrence (person_id ASC);
CREATE INDEX idx_visit_concept_id ON visit_occurrence (visit_concept_id ASC);

CREATE CLUSTERED INDEX idx_procedure_person_id ON procedure_occurrence (person_id ASC);
CREATE INDEX idx_procedure_concept_id ON procedure_occurrence (procedure_concept_id ASC);
CREATE INDEX idx_procedure_visit_id ON procedure_occurrence (visit_occurrence_id ASC);

CREATE CLUSTERED INDEX idx_drug_person_id ON drug_exposure (person_id ASC);
CREATE INDEX idx_drug_concept_id ON drug_exposure (drug_concept_id ASC);
CREATE INDEX idx_drug_visit_id ON drug_exposure (visit_occurrence_id ASC);

CREATE CLUSTERED INDEX idx_device_person_id ON device_exposure (person_id ASC);
CREATE INDEX idx_device_concept_id ON device_exposure (device_concept_id ASC);
CREATE INDEX idx_device_visit_id ON device_exposure (visit_occurrence_id ASC);

CREATE CLUSTERED INDEX idx_condition_person_id ON condition_occurrence (person_id ASC);
CREATE INDEX idx_condition_concept_id ON condition_occurrence (condition_concept_id ASC);
CREATE INDEX idx_condition_visit_id ON condition_occurrence (visit_occurrence_id ASC);

CREATE CLUSTERED INDEX idx_measurement_person_id ON measurement (person_id ASC);
CREATE INDEX idx_measurement_concept_id ON measurement (measurement_concept_id ASC);
CREATE INDEX idx_measurement_visit_id ON measurement (visit_occurrence_id ASC);

CREATE CLUSTERED INDEX idx_note_person_id ON note (person_id ASC);
CREATE INDEX idx_note_concept_id ON note (note_type_concept_id ASC);
CREATE INDEX idx_note_visit_id ON note (visit_occurrence_id ASC);

CREATE CLUSTERED INDEX idx_observation_person_id ON observation (person_id ASC);
CREATE INDEX idx_observation_concept_id ON observation (observation_concept_id ASC);
CREATE INDEX idx_observation_visit_id ON observation (visit_occurrence_id ASC);

CREATE INDEX idx_fact_relationship_id_1 ON fact_relationship (domain_concept_id_1 ASC);
CREATE INDEX idx_fact_relationship_id_2 ON fact_relationship (domain_concept_id_2 ASC);
CREATE INDEX idx_fact_relationship_id_3 ON fact_relationship (relationship_concept_id ASC);



/************************

Standardized health system data

************************/





/************************

Standardized health economics

************************/

CREATE CLUSTERED INDEX idx_period_person_id ON payer_plan_period (person_id ASC);





/************************

Standardized derived elements

************************/


CREATE INDEX idx_cohort_subject_id ON cohort (subject_id ASC);
CREATE INDEX idx_cohort_c_definition_id ON cohort (cohort_definition_id ASC);

CREATE INDEX idx_ca_subject_id ON cohort_attribute (subject_id ASC);
CREATE INDEX idx_ca_definition_id ON cohort_attribute (cohort_definition_id ASC);

CREATE CLUSTERED INDEX idx_drug_era_person_id ON drug_era (person_id ASC);
CREATE INDEX idx_drug_era_concept_id ON drug_era (drug_concept_id ASC);

CREATE CLUSTERED INDEX idx_dose_era_person_id ON dose_era (person_id ASC);
CREATE INDEX idx_dose_era_concept_id ON dose_era (drug_concept_id ASC);

CREATE CLUSTERED INDEX idx_condition_era_person_id ON condition_era (person_id ASC);
CREATE INDEX idx_condition_era_concept_id ON condition_era (condition_concept_id ASC);

/****************************************************************************************************************************************
*****************************************************	Non Cluster Index  **************************************************************
 ****************************************************************************************************************************************
 **********************************/

 /* PERSON */

USE [Camel_DB]
GO
	CREATE NONCLUSTERED INDEX [<PERSON_1, sysname,>]
		ON [dbo].[PERSON] ([person_id])
			INCLUDE ([year_of_birth],[gender_concept_id] );
				GO; 			

	CREATE NONCLUSTERED INDEX [<PERSON_2, sysname,>]
		ON [dbo].[PERSON] ([location_id])
			INCLUDE ([person_id]);
				GO; 

	CREATE NONCLUSTERED INDEX [<PERSON_3, sysname,>]
		ON [dbo].[PERSON] ([provider_id]);
				GO;

	CREATE NONCLUSTERED INDEX [<PERSON_4, sysname,>]
		ON [dbo].[PERSON] ([care_site_id]);
			GO;

/* OBSERVATION */ 

USE [Camel_DB];
GO;

	CREATE NONCLUSTERED INDEX [<OBSERVATION_1, sysname,>]
		ON [dbo].[OBSERVATION] ([provider_id]);
		GO;

	CREATE NONCLUSTERED INDEX [<OBSERVATION_2, sysname,>]
		ON [dbo].[OBSERVATION] ([visit_occurrence_id]);
		GO;

	CREATE NONCLUSTERED INDEX [<OBSERVATION_3, sysname,>]
		ON [dbo].[OBSERVATION] ([value_as_number],[unit_concept_id])
			INCLUDE ([observation_concept_id]);
			GO; 

/* OBSERVATION_PERIOD */

	CREATE NONCLUSTERED INDEX [<OBSERVATION_PERIOD_4, sysname,>]
		ON [dbo].[OBSERVATION_PERIOD] ([PERSON_ID])
			INCLUDE ([OBSERVATION_PERIOD_START_DATE]);
			GO; 

	CREATE NONCLUSTERED INDEX [<OBSERVATION_PERIOD_5, sysname,>]
		ON [dbo].[OBSERVATION_PERIOD] ([OBSERVATION_PERIOD_START_DATE],[OBSERVATION_PERIOD_END_DATE])
			INCLUDE ([PERSON_ID]);
			GO; 

/* VISIT */

	CREATE NONCLUSTERED INDEX [<VISIT_1, sysname,>]
		ON [dbo].[VISIT_OCCURRENCE] ([care_site_id]);
		GO; 

/* CONDITION */

	CREATE NONCLUSTERED INDEX [<CONDITION_1, sysname,>]
		ON [dbo].[CONDITION_OCCURRENCE] ([provider_id]);
		GO;

	CREATE NONCLUSTERED INDEX [<CONDITION_2, sysname,>]
		ON [dbo].[CONDITION_OCCURRENCE] ([visit_occurrence_id]);
		GO;

/* CONDITION_ERA */

	CREATE NONCLUSTERED INDEX [<CONDITION_ERA_1, sysname,>]
		ON [dbo].[CONDITION_ERA] ([person_id])
			INCLUDE ([condition_concept_id],[condition_era_start_date]);
			GO;

/* PROCEDURE */

	CREATE NONCLUSTERED INDEX [<PROCEDURE_1, sysname,>]
		ON [dbo].[PROCEDURE_OCCURRENCE] ([provider_id], [visit_occurrence_id]);
		GO;
		

/* DRUG */

	CREATE NONCLUSTERED INDEX [<DRUG_1, sysname,>]
		ON [dbo].[DRUG_EXPOSURE] ([provider_id]);
		GO;
 
	CREATE NONCLUSTERED INDEX [<DRUG_2, sysname,>]
		ON [dbo].[DRUG_EXPOSURE] ([visit_occurrence_id])
		GO;

	CREATE NONCLUSTERED INDEX [<DRUG_3, sysname,>]
		ON [dbo].[DRUG_EXPOSURE] ([days_supply])
			INCLUDE ([drug_concept_id])
			GO;

	CREATE NONCLUSTERED INDEX [<DRUG_4, sysname,>]
		ON [dbo].[DRUG_EXPOSURE] ([refills])
			INCLUDE ([drug_concept_id])
			GO;

	CREATE NONCLUSTERED INDEX [<DRUG_5, sysname,>]
		ON [dbo].[DRUG_EXPOSURE] ([quantity])
			INCLUDE ([drug_concept_id])
			GO;

	CREATE NONCLUSTERED INDEX [<DRUG_6, sysname,>]
		ON [dbo].[DRUG_EXPOSURE] ([drug_concept_id])
			INCLUDE ([drug_source_value])
			GO;

/* DRUG_ERA */

	CREATE NONCLUSTERED INDEX [<DRUG_ERA_1, sysname,>]
		ON [dbo].[DRUG_ERA] ([person_id])
			INCLUDE ([drug_concept_id],[drug_era_start_date])
		GO;

/* MEASUREMENT */

	CREATE NONCLUSTERED INDEX [<MEASUREMENT_1, sysname,>]
		ON [dbo].[MEASUREMENT] ([person_id])
			INCLUDE ([measurement_concept_id],[measurement_date]);
			GO;

	CREATE NONCLUSTERED INDEX [<MEASUREMENT_2, sysname,>]
		ON [dbo].[MEASUREMENT] ([provider_id]);
		GO;

	CREATE NONCLUSTERED INDEX [<MEASUREMENT_3, sysname,>]
		ON [dbo].[MEASUREMENT] ([visit_occurrence_id]);
		GO;

	CREATE NONCLUSTERED INDEX [<MEASUREMENT_4, sysname,>]
		ON [dbo].[MEASUREMENT] ([value_as_number],[value_as_concept_id]);
		GO;

	CREATE NONCLUSTERED INDEX [<MEASUREMENT_5, sysname,>]
		ON [dbo].[MEASUREMENT] ([value_as_number],[unit_concept_id])
			INCLUDE ([measurement_concept_id]);
			GO;

	CREATE NONCLUSTERED INDEX [<MEASUREMENT_6, sysname,>]
		ON [dbo].[MEASUREMENT] ([value_as_number],[unit_concept_id],[range_low],[range_high])
			INCLUDE ([measurement_concept_id]);
			GO;
		
	CREATE NONCLUSTERED INDEX [<MEASUREMENT_7, sysname,>]
		ON [dbo].[MEASUREMENT] ([value_as_number]);
			GO;

/* PROVIDER */

	CREATE NONCLUSTERED INDEX [<PROVIDER_1, sysname,>]
		ON [dbo].[PROVIDER] ([care_site_id]);
			GO;

/* PAYER_PLAN_PERIOD */

	CREATE NONCLUSTERED INDEX [<PAYER_PLAN_PERIOD_1, sysname,>]
		ON [dbo].[PAYER_PLAN_PERIOD] ([person_id])
			INCLUDE ([payer_plan_period_start_date],[payer_plan_period_end_date]);
			GO;

/* ACHILLES_results */

	CREATE NONCLUSTERED INDEX [<ACHILLES_RESULTS, sysname,>]
		ON [dbo].[ACHILLES_results] ([count_value]);
		GO;