Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/16209#discussion_r107822881
--- Diff: docs/sql-programming-guide.md ---
@@ -1223,6 +1223,13 @@ the following case-insensitive options:
This is a JDBC writer related option. If specified, this option
allows setting of database-specific table and partition options when creating a
table (e.g., <code>CREATE TABLE t (name string) ENGINE=InnoDB.</code>). This
option applies only to writing.
</td>
</tr>
+
+ <tr>
+ <td><code>createTableColumnTypes</code></td>
+ <td>
+ The database column data types to use instead of the defaults, when
creating the table. Data type information should be specified in the same
format as CREATE TABLE columns syntax (e.g: <code>"name CHAR(64), comments
VARCHAR(1024)")</code>. The specified types should be valid spark sql data
types. This option applies only to writing.
--- End diff --
Yeah, I see it is working internally. However, looks like this kind of
types is not explicitly documented:
http://spark.apache.org/docs/latest/sql-programming-guide.html#data-types
So I have a little concern regarding the description here.
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