[client-v2,jdbc-v2] Fix reading Date/Time values #2727
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…be stored as Integer
…is reduces number of conversions and makes logic simple
… dates are used for simpler reference
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chernser
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…ime value and actual time from it
chernser
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clickhouse-data/src/main/java/com/clickhouse/data/ClickHouseColumn.java
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client-v2/src/main/java/com/clickhouse/client/api/data_formats/internal/BinaryStreamReader.java
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Medium Risk
Changes core date/time decoding and conversion paths (including JDBC
ResultSetbehavior) and introduces a breaking change whereDateis no longer exposed asZonedDateTime, so downstream callers may see type/format differences.Overview
Fixes client-side decoding/conversion for
Date/Timetypes (includingDynamic/Variant) and aligns JDBC getters accordingly.Date/Date32are now read asLocalDatewith no timezone adjustment, whileTime/Time64are read as UTC-basedLocalDateTime(and exposed via newgetLocalTime()APIs forLocalTimeaccess).Adds
ClickHouseColumn.getValueDataType()to represent the effective type forSimpleAggregateFunction, and updates binary readers/string conversion logic to branch on that effective type; also improves null-handling and conversion consistency for enums, geo, inet, and arrays/lists. Extensive new/updated integration tests cover time range/precision, timezone invariance for dates, andDynamic/Variantdate-time decoding, plus new JDBC-focused date/time tests (includingDurationmapping for time values).Written by Cursor Bugbot for commit 909bdf3. This will update automatically on new commits. Configure here.