[jira] [Created] (CALCITE-2799) Allow alias in having clause for aggregate functions

["Arina Ielchiieva (JIRA)" <ji...@apache.org>]

Arina Ielchiieva created CALCITE-2799:
-----------------------------------------

             Summary: Allow alias in having clause for aggregate functions
                 Key: CALCITE-2799
                 URL: https://issues.apache.org/jira/browse/CALCITE-2799
             Project: Calcite
          Issue Type: Bug
    Affects Versions: 1.18.0
            Reporter: Arina Ielchiieva
            Assignee: Julian Hyde
             Fix For: 1.19.0


Currently alias is not allowed in having for aggregate functions. 
MySql supports such cases and taking into account that alias in having clause is allowed only for the following conformance levels: MYSQL_5, LENIENT, BABEL, it makes sense to allow alias in having for aggregate functions.

{noformat}
 /**
   * Whether to allow aliases from the {@code SELECT} clause to be used as
   * column names in the {@code HAVING} clause.
   *
   * <p>Among the built-in conformance levels, true in
   * {@link SqlConformanceEnum#BABEL},
   * {@link SqlConformanceEnum#LENIENT},
   * {@link SqlConformanceEnum#MYSQL_5};
   * false otherwise.
   */
  boolean isHavingAlias();
{noformat}





--
This message was sent by Atlassian JIRA
(v7.6.3#76005)