Fix SHOW command and toString() methods of LOBs #3708
Merged
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Closes #3701.
Closes #3698.
I removed synthetic parameters from queries generated for
SHOWcommand and replaced them with literals, because they need to be announced throughPrepared.getParameters(), but if they are announced, they break remote calls, client side doesn't have their values and throws exception by itself.I also increased allowed deviation between expected and actual cache sizes in
testCacheSize()to avoid failures. Maybe we need to adjust expectations here and decrease allowed difference again.