[jira] [Created] (FLINK-10281) Table function parse regular expression contains backslash failed

[Shang Yuanchun (Jira)]

vinoyang created FLINK-10281:
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             Summary: Table function parse regular expression contains backslash failed
                 Key: FLINK-10281
                 URL: https://issues.apache.org/jira/browse/FLINK-10281
             Project: Flink
          Issue Type: Bug
          Components: Table API & SQL
            Reporter: vinoyang
            Assignee: vinoyang


for example,  regular expression matches text ("\w") or number ("\d") :
{code:java}
testAllApis(
  "foothebar".regexExtract("foo([\\w]+)", 1),                 //OK, the method got 'foo([\w]+)'
  "'foothebar'.regexExtract('foo([\\\\w]+)', 1)",              //failed, the method got 'foo([\\w]+)' returns "", but if pass 'foo([\\w]+)' would get compile error.
  "REGEX_EXTRACT('foothebar', 'foo([\\\\w]+)', 1)",        //OK, the method got 'foo([\w]+)' but must pass four '\'
  "thebar"
)
{code}
the "similar to" function has the same issue.

 



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