                 Changes in version 2.8.0 (2026-09-17)                  

  - Add support for OMOP CDM 5.5
  - Add bigquery github workflow

                 Changes in version 2.7.0 (2026-08-27)                  

  - Add PostgreSQL as supported connection class
  - Fix cast issue in asData for DuckDB

                 Changes in version 2.6.0 (2026-06-16)                  

  - Add vocabularySchema argument to cdmFromCon for databases with a
    dedicated vocabulary schema (#619) @ginberg
  - Fix empty cohort table date columns being inserted as character on
    Spark (#618)
  - Fix cdmFromCon SQL dialect error with DatabaseConnector DBI
    connections (e.g. LIMIT on SQL Server) by unwrapping to the
    underlying connection (#613)
  - Use fast multi-row VALUES inserts by default on Spark/Databricks
    (~50x faster than the previous approach); also exported as
    insertTableSpark (#617)
  - Use httr2 instead of httr (#616)

                 Changes in version 2.5.1 (2026-04-03)                  

  - Remove generateCohortSet2 and put it in a new experimental package
    instead
  - Add workaround for dbWriteTable on Spark

                 Changes in version 2.5.0 (2026-03-08)                  

  - Add Delphi-100k example dataset
  - Improvements to cdmFromCohortSet/cdmFromJson synthetic data
    generation
  - Add cohdSimilarConcepts function to query Columbia Open Health Data
    API for concept co-occurrence
  - Add generateCohortSet2 for DAG-based cohort generation without Java
    dependency
  - Add R-native CIRCE SQL builder (buildCohortQuery,
    buildBatchCohortQuery)
  - Add DAG-based query optimizer and caching
  - Add batch optimization and benchmarking vignettes
  - Fix Snowflake column quoting for domain-filtered tables
  - Fix SQL Server LIMIT syntax error in cdmFromCon when using
    DatabaseConnector

                 Changes in version 2.4.0 (2026-02-16)                  

  - Implement generateCohortSet for local cdms (e.g. with omock)
  - Allow catalogs in duckdb connections @lyoganathan
  - Add cdmFromCohortSet to create synthetic cdms from Atlas cohort
    definitions
  - Add cdmCommentContents for creating comments with the contents of a
    CDM in tests and documentation
  - Make writeSchema optional in cdmFromCon @SulevR

                 Changes in version 2.3.0 (2026-01-10)                  

  - Add empty CDM v5.4 example dataset @ginberg
  - Support integer64 type for personId argument in cdmSubset @elinrow
  - Support local CDM objects in generateConceptCohortSet and date
    functions @catalamarti
  - Fix bug with cohortCodelist creation for some cohorts @sulevR
  - Simplify cohortCollapse logic and support local cdm tables @ablack3

                 Changes in version 2.2.0 (2025-09-16)                  

  - Test using DatabaseConnector version 7 JDBC connections on all
    supported databases @IoannaNika
  - Change summariseQuantile2 output columns to match
    DrugExposureDiagnostics (e.g. q05, q10)
  - Add computeDataHash argument to snapshot()
  - Add computeDataHashByTable function to compute a hash for each CDM
    table
  - Update connection examples documentation
  - Change Eunomia dataset download link
  - Add Synthea27NjParquet example dataset

                 Changes in version 2.1.1 (2025-07-10)                  

  - fix bug with cohort generation @catalamarti
  - fix bug in summariseQuantile2 @ablack3

                 Changes in version 2.1.0 (2025-06-25)                  

  - Add support for Redshift and Spark with DatabaseConnector driver
    (pending version 7) @IoannaNika
  - Update readme instructions to use camel case functions @ginberg
  - New summariseQuantile2 function that supports multiple variables
    @ablack3
  - Fixed the returned table references @mvankessel-EMC
  - Validate the writePrefix @xihang-chen

                 Changes in version 2.0.0 (2025-02-21)                  

  - Remove snake case functions in favor of only camel case style
  - Remove cohort table manipulation functions
  - Add row to cohort attrition table that accounts for record
    collapsing cohort eras step in Atlas/Circe cohort generation
  - Increase test coverage
  - Fix bugs with cdmFlatten
  - Add support for snowflake with DatabaseConnector driver
  - Add attrition record for cohort era collapse when generating Atlas
    cohorts

                 Changes in version 1.7.0 (2024-12-19)                  

  - Add support for Big Query using bigrquery DBI package (pending PRs
    on omopgenerics and bigrquery) @IoannaNika
  - Add support for the DatabaseConnector postgresql JDBC driver
    @ablack3
  - By default automatically detect CDM version @catalamarti
  - Deprecate snake case functions @IoannaNika
  - Deprecate cohort manipulation functions @ablack3
  - Deprecate validation functions @ablack3

                 Changes in version 1.6.1 (2024-11-29)                  

  - use BIGINT for subject_id column of cohort tables

                 Changes in version 1.6.0 (2024-11-13)                  

  - fix bug in copyCdmTo where attribute tables were not being copied
    #231 @catalamarti
  - check that overwrite argument works in compute when using temp
    tables #222 @ablack3
  - added synpuf1k with Achilles tables to example datasets #230
    @ablack3
  - add requireEunomia function #481 @catalamarti

                 Changes in version 1.5.0 (2024-07-16)                  

  - Get all tests passing on Databricks/Spark using odbc driver
  - Emulate temporary tables on Databricks/Spark when compute is called
    with temporary = TRUE
  - soft deprecate asDate in favor of as.Date
  - soft deprecate assertWriteSchema since cdm object are now required
    to always have a write schema
  - remove support for Capr cohort objects in generate_cohort_set to
    pass CRAN checks

                 Changes in version 1.4.0 (2024-05-03)                  

  - fix issue on cran server
  - new omopgenerics methods

                 Changes in version 1.3.1 (2024-04-02)                  

  - Bug fix for collapse cohort
  - dbplyr 2.5.0 fixes

                 Changes in version 1.3.0 (2024-02-05)                  

  - Incorporate omopgenerics

                 Changes in version 1.2.1 (2024-01-18)                  

  - Fix failing CRAN tests

                 Changes in version 1.2.0 (2023-10-31)                  

  - Compatibility with dbplyr v2.4.0

                 Changes in version 1.1.4 (2023-10-20)                  

  - Fix recursive edge cases with cdm reference issue.

                 Changes in version 1.1.3 (2023-10-14)                  

  - Fix recursive cdm reference issue. Thanks @catalamarti!

                 Changes in version 1.1.2 (2023-08-22)                  

  - fix failing test on CRAN

                 Changes in version 1.1.1 (2023-08-22)                  

  - add some bigquery support

August 22, 2023

                 Changes in version 1.1.0 (2023-08-17)                  

  - add copy_cdm_to, copyCdmTo
  - add generate_concept_cohort_set, generateConceptCohortSet
  - add more example CDM datasets
  - add record_cohort_attrition, recordCohortAttrition
  - improve database test coverage
  - update vignettes

Released Aug 17, 2023

                 Changes in version 1.0.0 (2023-06-12)                  

  - remove write_prefix in cdm_from_con in favor of using the
    write_schema argument for prefixing
  - remove cdm_tables argument from cdm_from_con in favor of
    cdm_select_tbl selection function
  - add attributes to the cdm object to communicate downstream temp
    table preferences

Released June 7, 2023

                 Changes in version 0.6.0 (2023-05-05)                  

  - generate Capr cohorts with generateCohortSet
  - add datepart function for extracting year, month, day parts of dates
    in dplyr
  - fix datediff logic for years so it now returns number of complete
    years between two date
  - add "write_prefix" attribute to cdm objects to support a namespace
    within the write_schema

Released May 5, 2023

                 Changes in version 0.5.1 (2023-03-22)                  

  - Add both camelCase and snake_case versions of all functions
    (@Tsemharb)
  - Add cdm object attributes to cdm_snapshot output
  - use number_records and number_subjects in cohort counts table
  - Minor bug fixes

Released on March 20, 2023

                 Changes in version 0.5.0 (2023-03-09)                  

  - Define generatedCohortSet class
  - Add summarize_quantile for cross database quantile queries
  - Add GeneratedCohortSet object, constructor, and attribute accessor
    functions
  - Add vignette on cohort generation
  - Add cdmSubset, cdmSubsetCohort, cdmSample for subsetting a cdm
  - Add cdmFlatten for transforming a cdm into a single flat table of
    observations
  - Improve test coverage
  - Make Java dependency optional
  - cdm_schema is now required in cdm_from_con except for duckdb
    connections
  - Remove visit_detail from default cdm tables
  - Deprecate computePermanent
  - Improve package website

Substantial contributions by @edward-burn, @catalamarti, @Tsemharb who
are now package co-authors.

Released Mar 8, 2023

                 Changes in version 0.4.1 (2023-01-24)                  

  - Add computeQuery function for creating temp and persistent tables
    from dplyr queries
  - Download Eunomia from darwin-eu repository as zipped csv files
  - Add passing tests for Oracle and Spark
  - Add asDate wrapper that provides correct as.Date dbplyr translations
  - Incorporate code review suggestions from @mvankessel-EMC

Released Jan 21, 2023

                 Changes in version 0.3.0 (2022-11-29)                  

  - Add computePermanent and appendPermanent functions
  - Add readCohortSet
  - Add generateCohortSet
  - Extract Eunomia dataset so that it is downloaded separately

Released Nov 29, 2022

                        Changes in version 0.2.0                        

  - Add support for OMOP v5.3 and v5.4
  - Add datediff and dateadd functions that can be used in
    dplyr::mutate()
  - Add assert_tables function for checking that a cdm object has
    required tables
  - Add camelCase versions of several functions

Released Nov 15, 2022

                 Changes in version 0.1.0 (2022-09-29)                  

  - Initial release Sept 11, 2022
  - Added a NEWS.md file to track changes to the package.
