#3552 Column alias required for SQL Server + findCount + distinct #3553
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- Modifies CQueryBuilder with the main fix which is to use the database platform selectCountWithColumnAlias for all distinct queries [and later disable it for single column case] - Modifies SqlTreeBuilder because we need to NOT use the column alias for the count distinct SINGLE COLUMN case. So change here to: - build the root SqlTreeNode first as part of constructor - use rootNode.isSingleProperty() to NOT use column alias for the single column case - Hence need to initialise DefaultDbSqlContext AFTER the root SqlTreeNode - Modifies DefaultDbSqlContext with no effective change, just columnIndex++ ONLY when we are actually using column alias - Modifies H2Platform to also use selectCountWithColumnAlias true
Plus fix TestRowCount for Oracle platform
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Modifies CQueryBuilder with the main fix which is to use the database platform selectCountWithColumnAlias for all distinct queries [and later disable it for single column case]
Modifies SqlTreeBuilder because we need to NOT use the column alias for the count distinct SINGLE COLUMN case. So change here to:
build the root SqlTreeNode first as part of constructor
use rootNode.isSingleProperty() to NOT use column alias for the single column case
Hence need to initialise DefaultDbSqlContext AFTER the root SqlTreeNode
Modifies DefaultDbSqlContext with no effective change, just columnIndex++ ONLY when we are actually using column alias
Modifies H2Platform to also use selectCountWithColumnAlias true