kujon 0ae94ad32f [SPARK-32576][SQL] Support PostgreSQL bpchar type and array of char type ... ### What changes were proposed in this pull request? This PR fixes the support for char(n)[], character(n)[] data types. Prior to this change, a user would get `Unsupported type ARRAY` exception when attempting to interact with the table with such types. The description is a bit more detailed in the [JIRA](https://issues.apache.org/jira/browse/SPARK-32393) itself, but the crux of the issue is that postgres driver names char and character types as `bpchar`. The relevant driver code can be found [here](https://github.com/pgjdbc/pgjdbc/blob/master/pgjdbc/src/main/java/org/postgresql/jdbc/TypeInfoCache.java#L85-L87). `char` is very likely to be still needed, as it seems that pg makes a distinction between `char(1)` and `char(n > 1)` as per [this code](b7fd9f3cef/pgjdbc/src/main/java/org/postgresql/core/Oid.java (L64)). ### Why are the changes needed? For completeness of the pg dialect support. ### Does this PR introduce _any_ user-facing change? Yes, successful reads of tables with bpchar array instead of errors after this fix. ### How was this patch tested? Unit tests Closes #29192 from kujon/fix_postgres_bpchar_array_support. Authored-by: kujon <jakub.korzeniowski@vortexa.com> Signed-off-by: Dongjoon Hyun <dongjoon@apache.org>		2020-08-09 19:03:37 -07:00
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benchmarks	[SPARK-30648][SQL] Support filters pushdown in JSON datasource	2020-07-17 00:01:13 +09:00
src	[SPARK-32576][SQL] Support PostgreSQL bpchar type and array of char type	2020-08-09 19:03:37 -07:00
v1.2/src	[SPARK-25557][SQL] Nested column predicate pushdown for ORC	2020-08-07 08:07:41 -07:00
v2.3/src	[SPARK-25557][SQL] Nested column predicate pushdown for ORC	2020-08-07 08:07:41 -07:00
pom.xml	[SPARK-31336][SQL] Support Oracle Kerberos login in JDBC connector	2020-06-30 10:30:22 -07:00