Fix findVersions() unbound bind parameters on sql2011 history platforms#3837
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On standards-based platforms (MariaDB, SQL Server, Oracle, DB2, HANA) the root table always generates a 'for system_time between ? and ?' clause for TemporalMode.VERSIONS, but bind values were only supplied for findVersionsBetween(), leaving findVersions() with 2 unbound placeholders and shifted bind positions ("Parameter at position N is not set").
Match the bind guard to the SQL generation condition and default start/end to epoch/now when not explicit.
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Fix for regression introduced in 18.2.0
On standards-based platforms (MariaDB, SQL Server, Oracle, DB2, HANA) the root table always generates a 'for system_time between ? and ?' clause for TemporalMode.VERSIONS, but bind values were only supplied for findVersionsBetween(), leaving findVersions() with 2 unbound placeholders and shifted bind positions ("Parameter at position N is not set").
Match the bind guard to the SQL generation condition and default start/end to epoch/now when not explicit.