Postgres load 100%

[dtitov]

Describe the bug
Running query with OR statement may trigger 100% CPU load of Postgres process.

To Reproduce
Steps to reproduce the behavior:

1. Search for

(samples.content->'biospecimen_class'->'term_label' ? 'Cell'
OR samples.content->'donor_age' ? '25 - 30')
AND experiments.content->'technique'->'term_label' ? 'DNase I hypersensitive sites sequencing assay'

Actual behavior
It hangs with the progress bar stuck at the end of the screen + 100% Postgress service CPU load in the VM.

Expected behavior
We get the results.

Screenshots
If applicable, add screenshots to help explain your problem.

For UI-related issues, please complete the following information:

• OS: [e.g. iOS]
• Browser [e.g. chrome, safari]
• Version [e.g. 22]

Additional context
Add any other context about the problem here.