[DRILL-3355] Implement ResultSetMetadata's getPrecision, getScale, getColumnDisplaySize (need RPC-level data)

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Fix Version/s: Future
• Component/s: Client - JDBC
• Assignee: Unassigned
• Reporter: Daniel Barclay
• Created: 24/Jun/15 17:42
• Updated: 15/Oct/15 20:06

Description

JDBC ResultSetMetadata methods getPrecision(...), getScale(...), and getColumnDisplaySize() are not implemented, currently because required data is not available in the RPC-level data.

The unavailable data includes:

• string type lengths (N in VARCHAR(N), BINARY(N))
• interval qualifier information (which units, leading digit precision, fractional seconds precision)
• datetime type fractional seconds precision

(Whether an interval is a YEAR/MONTH interval or is a DAY/HOUR/MINUTE/SECOND interval is available.)

Issue Links

• is duplicated by: DRILL-3908 ResultSetMetadata.getColumnDisplaySize() does not return correct column length value
• is related to: DRILL-3151 ResultSetMetaData not as specified by JDBC (null/dummy value, not ""/etc.)
• requires: DRILL-3356 RPC-level data is missing data needed for result set metadata