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https://issues.apache.org/jira/browse/HIVE-13864?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15880749#comment-15880749
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Aihua Xu commented on HIVE-13864:
---------------------------------
OK. Seems we are only removing the comments if the whole line is a comment.
It makes sense to also detect the comment in a line. So the patch is trying to
detect if -- is inside a string or not, right? Seems we need to handle the
case if the string is across the line with --. That may cause issues like
select 'afddb
-- ddd'
from src;
> Beeline ignores the command that follows a semicolon and comment
> ----------------------------------------------------------------
>
> Key: HIVE-13864
> URL: https://issues.apache.org/jira/browse/HIVE-13864
> Project: Hive
> Issue Type: Bug
> Reporter: Muthu Manickam
> Assignee: Yongzhi Chen
> Attachments: HIVE-13864.01.patch, HIVE-13864.02.patch,
> HIVE-13864.3.patch
>
>
> Beeline ignores the next line/command that follows a command with semicolon
> and comments.
> Example 1:
> select *
> from table1; -- comments
> select * from table2;
> In this case, only the first command is executed.. second command "select *
> from table2" is not executed.
> ------
> Example 2:
> select *
> from table1; -- comments
> select * from table2;
> select * from table3;
> In this case, first command and third command is executed. second command
> "select * from table2" is not executed.
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