Column aliasing could simplify queries
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Key: DERBY-84
URL: http://nagoya.apache.org/jira/browse/DERBY-84
Project: Derby
Type: New Feature
Components: SQL
Versions: 10.0.2.0
Reporter: Bob Gibson
Priority: Minor
Currently, one can not use an alias to simplify queries. For example, being
able to alias "LongDescriptiveColumnName" AS LDCN would allow one to use the
alias elsewhere in the query, e.g., the WHERE clause:
SELECT LongDescriptiveColumnName AS LDCN FROM MyTable WHERE LDCN LIKE
'%testing%';
The current result is a message like:
ERROR 42X04: Column 'LDCN' is not in any table in the FROM list or it appears
within a join specification and is outside the scope of the join specification
or it appears in a HAVING clause and is not in the GROUP BY list. If this is a
CREATE or ALTER TABLE statement then 'LDCN' is not a column in the target table.
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