Underscore unintentionally acting as wildcard in 'db-djv-pg' commands

[denis-stepanov]

This command:

$ db-djv-pg delete 'FR_TF1_*'

would delete a track FR_TF1_240206_SWAT3_2 but also a track FR_TF1SERIESFILMS_220811_EVENING1_3. This is not intended; it happens because underscore is passed unmasked into SQL level, and in SQL underscore means "match any character". Because underscores are ubiquitous in track names, they have to be properly escaped.