drainer: rtrim char type column in sql

[cartersz]

Bug Report

Please answer these questions before submitting your issue. Thanks!

1. What did you do?
   oracle will pad column of char type, if the value length less than the length defined ,
   we need to rtrim the column in where clause in sql.

2. What did you expect to see?
   when table defined the char type column, rtrim function will be used in sql

3. What did you see instead?
   it do not rtrim the char type column.

4. Please provide the relate downstream type and version of drainer.
   (run drainer -V in terminal to get drainer's version)

[niubell]

/label affects-6.1

[ti-chi-bot]

@niubell: The label(s) affects-6.1 cannot be applied. These labels are supported: contribution, duplicate, feature-request, first-time-contributor, invalid, need-update-ansible, need-update-docs, needs-cherry-pick-release-2.1, needs-cherry-pick-release-3.0, needs-cherry-pick-release-3.1, needs-cherry-pick-release-4.0, needs-cherry-pick-release-5.0, needs-cherry-pick-release-5.1, needs-cherry-pick-release-5.2, needs-cherry-pick-release-5.3, needs-cherry-pick-release-5.4, needs-cherry-pick-release-6.0, needs-cherry-pick-release-6.1, p0, p1, p2, question, wontfix.

In response to this:

/label affects-6.1

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[niubell]

/label needs-cherry-pick-release-6.1

[ti-chi-bot]

@niubell: The label(s) needs-cherry-pick-release-6.1 cannot be applied, because the repository doesn't have them.

In response to this:

/label needs-cherry-pick-release-6.1

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the ti-community-infra/tichi repository.