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https://issues.apache.org/jira/browse/DERBY-5157?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13012027#comment-13012027
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Knut Anders Hatlen commented on DERBY-5157:
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I think the code in updateNewAutoincrementColumn() isn't currently in use
because of DERBY-3888.
The bug in updateNewColumnToDefault() is shown by the ALTER TABLE statement in
the bug description.
The problem in getColumnMax() can be exposed by executing these statements:
ij> create table t ("""" int generated always as identity);
0 rows inserted/updated/deleted
ij> alter table t alter column """" set increment by 2;
ERROR 42X01: Syntax error: Encountered "APP" at line 1, column 22.
> Incomplete quoting of SQL identifiers in AlterTableConstantAction
> -----------------------------------------------------------------
>
> Key: DERBY-5157
> URL: https://issues.apache.org/jira/browse/DERBY-5157
> Project: Derby
> Issue Type: Bug
> Components: SQL
> Affects Versions: 10.7.1.1
> Reporter: Knut Anders Hatlen
> Assignee: Knut Anders Hatlen
>
> AlterTableConstantAction generates SQL statements various places. Identifiers
> (schema names, table names, column names) are surrounded with double quotes
> in case they contain special characters. This is not enough if the
> identifiers contain double quotes, as can be seen with this example:
> ij> create table t(x int);
> 0 rows inserted/updated/deleted
> ij> alter table t add column """" int default 42;
> ERROR 42X01: Syntax error: Encountered "\"" at line 1, column 22.
> I've found three places where AlterTableConstantAction generates SQL
> statements: updateNewColumnToDefault(), updateNewAutoincrementColumn(),
> getColumnMax(). All three places suffer from this problem.
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