Developed support for BigQuery INTERVAL data types within the BigQuerySqlDialect of the datametica/calcite repository, focusing on enabling INTERVAL MINUTE_SECOND and INTERVAL YEAR_MONTH compatibility. This work involved implementing SQL dialect enhancements in Java, with an emphasis on robust SQL dialect implementation and comprehensive test coverage. By aligning Calcite’s SQL translation layer with BigQuery’s syntax, the changes reduced query failures and improved reliability for interval-based queries, facilitating smoother data integration workflows. No major bugs were addressed during this period, as the primary focus remained on delivering a high-quality feature that accelerates onboarding and enhances cross-dialect compatibility for BigQuery users.