Refactor + Fix for making table headers #45
Merged
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Issue:
In the query response, not all keys may be present, leading to columns in the displayed table having mismatching headers, as these headers are derived from the keys of the first record.
Fix:
Determining headers on two scenarios:
When the query includes '*', indicating the selection of all columns, headers are generated from the schema by mapping parseable data types to Grafana's own data types. Any gaps are filled by iterating over the generated data frame.
If the query selectively chooses columns, headers are created from the first record, assuming that the SQL query results fill any gaps.