seancxmao f984ec75ed [SPARK-25132][SQL] Case-insensitive field resolution when reading from Parquet ... ## What changes were proposed in this pull request? Spark SQL returns NULL for a column whose Hive metastore schema and Parquet schema are in different letter cases, regardless of spark.sql.caseSensitive set to true or false. This PR aims to add case-insensitive field resolution for ParquetFileFormat. * Do case-insensitive resolution only if Spark is in case-insensitive mode. * Field resolution should fail if there is ambiguity, i.e. more than one field is matched. ## How was this patch tested? Unit tests added. Closes #22148 from seancxmao/SPARK-25132-Parquet. Authored-by: seancxmao <seancxmao@gmail.com> Signed-off-by: hyukjinkwon <gurwls223@apache.org>		2018-08-21 10:34:23 +08:00
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benchmarks	[SPARK-24549][SQL] Support Decimal type push down to the parquet data sources	2018-07-16 15:44:51 +08:00
src	[SPARK-25132][SQL] Case-insensitive field resolution when reading from Parquet	2018-08-21 10:34:23 +08:00
pom.xml	[SPARK-25019][BUILD] Fix orc dependency to use the same exclusion rules	2018-08-06 12:00:39 -07:00