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https://issues.apache.org/jira/browse/DERBY-3923?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Rick Hillegas updated DERBY-3923:
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Attachment: derby-3923-01-aa-optionalDatatype.diff
Attaching derby-3923-01-aa-optionalDatatype.diff. This patch makes the datatype
declaration optional for generated columns, per the functional spec for
DERBY-481. Running tests now.
Touches the following files:
M java/engine/org/apache/derby/impl/sql/compile/sqlgrammar.jj
M java/engine/org/apache/derby/loc/messages.xml
M java/shared/org/apache/derby/shared/common/reference/SQLState.java
Changes the grammar. The grammar changes mean that, for non-generated columns,
we have to proscribe the absence of a datatype during bind() rather than during
parse().
M java/engine/org/apache/derby/impl/sql/compile/AlterTableNode.java
M java/engine/org/apache/derby/impl/sql/compile/ColumnDefinitionNode.java
M java/engine/org/apache/derby/impl/sql/compile/CreateTableNode.java
M java/engine/org/apache/derby/impl/sql/compile/TableElementList.java
Disables the early coercions for UDTs and collations when applied to generated
columns. Instead, moves these coercions into the logic which binds and
validates generated columns--at that time we have enough information to bind
the generation clause and determine its datatype.
M
java/testing/org/apache/derbyTesting/functionTests/tests/lang/GeneratedColumnsTest.java
M
java/testing/org/apache/derbyTesting/functionTests/tests/lang/GeneratedColumnsHelper.java
Adds tests.
> Make the datatype optional when declaring columns with generation clauses
> -------------------------------------------------------------------------
>
> Key: DERBY-3923
> URL: https://issues.apache.org/jira/browse/DERBY-3923
> Project: Derby
> Issue Type: Task
> Components: SQL
> Affects Versions: 10.5.0.0
> Reporter: Rick Hillegas
> Attachments: derby-3923-01-aa-optionalDatatype.diff
>
>
> According to the ANSI/ISO spec, the datatype is supposed to be optional for
> columns defined by generation clauses. This elegant shorthand is a stretch
> goal.
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