Remove unused DeserializePartitionValueFromEpochInteger

No longer called after simplifying identity partition pushdown to use
column values as-is instead of epoch integers.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Signed-off-by: Marco Slot <marco.slot@snowflake.com>

Author: sfc-gh-mslot

pg_lake_table/include/pg_lake/fdw/partition_transform.h

@@ -33,8 +33,6 @@ extern List *AllPartitionTransformList(Oid relationId);
 extern List *GetPartitionTransformsFromSpecFields(Oid relationId, List *specFields);
 extern void *DeserializePartitionValueFromPGText(IcebergPartitionTransform * transform,
 												 const char *valueText, size_t *valueLength);
-extern void *DeserializePartitionValueFromEpochInteger(IcebergPartitionTransform * transform,
-													   const char *epochText, size_t *valueLength);
 extern const char *SerializePartitionValueToPGText(void *value, size_t valueLength, IcebergPartitionTransform * transform);
 extern Datum PartitionValueToDatum(IcebergPartitionTransformType transformType, void *value, size_t valueLength,
 								   PGType pgType, bool *isNull);

pg_lake_table/src/fdw/partition_pushdown.c

@@ -201,7 +201,7 @@ NormalizeDuckDBTextToPGText(const char *duckdbText, Oid resultTypeOid,
 
 	getTypeInputInfo(resultTypeOid, &typoinput, &typioparam);
 	Datum		parsedDatum = OidInputFunctionCall(typoinput, (char *) duckdbText,
-											   typioparam, resultTypeMod);
+												   typioparam, resultTypeMod);
 
 	getTypeOutputInfo(resultTypeOid, &typoutput, &typIsVarlena);
 	return OidOutputFunctionCall(typoutput, parsedDatum);
@@ -323,8 +323,8 @@ ParsePartitionValuesFromPartitionKeys(char *partitionKeysText, List *transforms)
 		else
 		{
 			/*
-			 * Normalize DuckDB text to PG canonical format (e.g. "1.0" ->
-			 * "1" for numeric) so the roundtrip assertion in
+			 * Normalize DuckDB text to PG canonical format (e.g. "1.0" -> "1"
+			 * for numeric) so the roundtrip assertion in
 			 * DeserializePartitionValueFromPGText passes.
 			 */
 			char	   *normalizedText =

pg_lake_table/src/fdw/partition_transform.c

@@ -1055,51 +1055,6 @@ DeserializePartitionValueFromPGText(IcebergPartitionTransform * transform,
 	return value;
 }
 
-/*
- * DeserializePartitionValueFromEpochInteger converts an epoch integer text
- * (from a DuckDB Hive-style partition path) to Iceberg binary format.
- *
- * For identity transforms on temporal types, the DuckDB expression produces
- * epoch integers (days for date, microseconds for timestamp) instead of native
- * text to avoid formatting issues with BC dates.
- */
-void *
-DeserializePartitionValueFromEpochInteger(IcebergPartitionTransform * transform,
-										  const char *epochText, size_t *valueLength)
-{
-	if (epochText == NULL)
-	{
-		*valueLength = 0;
-		return NULL;
-	}
-
-	Oid			typeOid = transform->pgType.postgresTypeOid;
-	Datum		valueDatum;
-
-	if (typeOid == DATEOID)
-	{
-		int32		epochDays = pg_strtoint32(epochText);
-		DateADT		pgDate = AdjustDateFromUnixToPostgres(epochDays);
-
-		valueDatum = DateADTGetDatum(pgDate);
-	}
-	else if (typeOid == TIMESTAMPOID || typeOid == TIMESTAMPTZOID)
-	{
-		int64		epochMicros = pg_strtoint64(epochText);
-		Timestamp	pgTs = AdjustTimestampFromUnixToPostgres(epochMicros);
-
-		valueDatum = TimestampGetDatum(pgTs);
-	}
-	else
-	{
-		ereport(ERROR,
-				(errcode(ERRCODE_INTERNAL_ERROR),
-				 errmsg("DeserializePartitionValueFromEpochInteger called for non-temporal type %u",
-						typeOid)));
-	}
-
-	return DatumToPartitionValue(transform, valueDatum, false, valueLength);
-}
 
 
 /*