Github user vdiravka commented on a diff in the pull request:
https://github.com/apache/drill/pull/549#discussion_r71921608
--- Diff:
exec/java-exec/src/main/java/org/apache/drill/exec/planner/sql/parser/DrillCompoundIdentifier.java
---
@@ -69,31 +70,38 @@ public void addIndex(int index, SqlParserPos pos){
}
}
- public SqlNode getAsSqlNode(){
- if(ids.size() == 1){
+ public SqlNode getAsSqlNode(Set<DrillCompoundIdentifier> fullSchemasSet)
{
--- End diff --
Do you ask about clarification/github comment or code comment?
Calcite parses the query with schema name in column name correctly. Then
Drill reconverts SqlNode for supporting complex types
[DRILL-932](https://issues.apache.org/jira/browse/DRILL-932).
But it was hardcoded: handled everything post two index as item operator
(For column name in select clause `cp.employee.json.employee_id` SqlNode was
`cp.employee.json['department_id']` instead of
`cp.employee.json.department_id`).
I added the case when full schema identifier is used in select clause to
handle everything post two index (except schema identifier) as item operator. I
made it by comparing column names identifiers with full schema identifiers from
`from` and `join` clauses
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