[8.x](backport #42271) x-pack/metricbeat/module/sql: Add debug queries when merge_results: true
#26614
| Job | Run time |
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| 9m 10s | |
| 9m 18s | |
| 3m 33s | |
| 22m 1s |
merge_results: true
#26614
| Job | Run time |
|---|---|
| 9m 10s | |
| 9m 18s | |
| 3m 33s | |
| 22m 1s |