Takuya UESHIN f62c427289 [SPARK-2431][SQL] Refine StringComparison and related codes. ... Refine `StringComparison` and related codes as follows: - `StringComparison` could be similar to `StringRegexExpression` or `CaseConversionExpression`. - Nullability of `StringRegexExpression` could depend on children's nullabilities. - Add a case that the like condition includes no wildcard to `LikeSimplification`. Author: Takuya UESHIN <ueshin@happy-camper.st> Closes #1357 from ueshin/issues/SPARK-2431 and squashes the following commits: 77766f5 [Takuya UESHIN] Add a case that the like condition includes no wildcard to LikeSimplification. b9da9d2 [Takuya UESHIN] Fix nullability of StringRegexExpression. 680bb72 [Takuya UESHIN] Refine StringComparison.		2014-07-10 19:20:00 -07:00
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src	[SPARK-2431][SQL] Refine StringComparison and related codes.	2014-07-10 19:20:00 -07:00
pom.xml	[SPARK-1776] Have Spark's SBT build read dependencies from Maven.	2014-07-10 11:03:37 -07:00