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SQL: Fixes issues with showing value column name prefix in legends (#35839)
* rename strategy * Update pkg/tsdb/sqleng/sql_engine.go Co-authored-by: Torkel Ödegaard <torkel@grafana.org> * more strict constraints * Fixed so that it works on multi series results * only apply the logic when original query returns 3 fields * removed part of comment * Update mysql test Co-authored-by: Torkel Ödegaard <torkel@grafana.org> Co-authored-by: Torkel Ödegaard <torkel@grafana.com>
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@ -795,8 +795,8 @@ func TestPostgres(t *testing.T) {
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frames, _ := queryResult.Dataframes.Decoded()
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require.Equal(t, 1, len(frames))
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require.Equal(t, 3, len(frames[0].Fields))
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require.Equal(t, data.Labels{"metric": "Metric A - value one"}, frames[0].Fields[1].Labels)
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require.Equal(t, data.Labels{"metric": "Metric B - value one"}, frames[0].Fields[2].Labels)
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require.Equal(t, "Metric A - value one", frames[0].Fields[1].Name)
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require.Equal(t, "Metric B - value one", frames[0].Fields[2].Name)
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})
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t.Run("When doing a metric query with metric column and multiple value columns", func(t *testing.T) {
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