[FLINK-11279][Table API & SQL]The bug of Error parsing ExpressionParser

[XuQianJin-Stars]

What is the purpose of the change

(This PR is designed to solve the problem of The bug of Error parsing ExpressionParser.)

Brief change log

• I will change WEEKS to WEEK, as follows:

  before

    case expr ~ _ ~ (WEEKS.key | WEEKS.key) => toMilliInterval(expr, 7 * MILLIS_PER_DAY)

  after

    case expr ~ _ ~ (WEEKS.key | WEEK.key) => toMilliInterval(expr, 7 * MILLIS_PER_DAY)

Verifying this change

(Please pick either of the following options)

This change is a trivial rework / code cleanup without any test coverage.

(or)

This change is already covered by existing tests, such as (please describe tests).

(or)

This change added tests and can be verified as follows:

(example:)

• I added a test to ScalarFunctionsTest.

Does this pull request potentially affect one of the following parts:

• Dependencies (does it add or upgrade a dependency): (yes)
• The public API, i.e., is any changed class annotated with @Public(Evolving): (yes)
• The serializers: (no)
• The runtime per-record code paths (performance sensitive): (no )
• Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Yarn/Mesos, ZooKeeper: (yes)
• The S3 file system connector: (no)

Documentation

• Does this pull request introduce a new feature? (yes / no)

• If yes, how is the feature documented? (not applicable / docs / JavaDocs / not documented)

[xueyumusic]

LGTM, it is a bug and the test didn't cover..thanks, @XuQianJin-Stars

[sunjincheng121]

Hi @XuQianJin-Stars Thanks for the PR. Please clean up the PR summary. You can refer to the PR example that has been completed. e.g.: #7373
Best,
Jincheng

[XuQianJin-Stars]

hi @sunjincheng121
thankyou， Thanks for reminding me that I forgot to clean up the PR before
Best，
qianjin

[XuQianJin-Stars]

hi @xueyumusic can leave a contact information to add a friend?
Best，
qianjin

[XuQianJin-Stars]

hi @sunjincheng121 @xueyumusic now there is a test broken in CI environment，It is not caused by the currently modified PR

[twalthr]

Thank you @XuQianJin-Stars. Merging...