[ISSUE #7694] Fix fuzzy search with underscore returns wrong results

[gaoliang]

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What is the purpose of the change

Fix #7694 Fuzzy search with underscore returns wrong results

Brief changelog

Escape underscore when query data with generateLikeArgument function.

For derby, an additional statement specifying the escape character is required, so add a

SQL_DERBY_ESCAPE_BACK_SLASH_FOR_LIKE = " ESCAPE '\\' "

see https://db.apache.org/derby/docs/10.5/ref/rrefjdbc28456.html

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[lizzy810]

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