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From kkhatua <...@git.apache.org>
Subject [GitHub] drill pull request #907: DRILL-5697: Improve performance of filter operator ...
Date Fri, 18 Aug 2017 05:49:25 GMT
Github user kkhatua commented on a diff in the pull request:

    --- Diff: exec/java-exec/src/main/java/org/apache/drill/exec/expr/fn/impl/RegexpUtil.java
    @@ -47,18 +47,55 @@
           "[:alnum:]", "\\p{Alnum}"
    +  // type of pattern string.
    +  public enum sqlPatternType {
    +    STARTS_WITH, // Starts with a constant string followed by any string values (ABC%)
    +    ENDS_WITH, // Ends with a constant string, starts with any string values (%ABC)
    +    CONTAINS, // Contains a constant string, starts and ends with any string values (%ABC%)
    --- End diff --
    You should add a pattern of the form 'Starts with a constant, ends with another constant,
and has any string in between'

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