optimize: refactor ColumnUtils and EscapeHandler #5646
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Ⅰ. Describe what this PR did
refactor ColumnUtils and EscapeHandler
Ⅱ. Does this pull request fix one issue?
fix #5456
Ⅲ. Why don't you add test cases (unit test/integration test)?
Ⅳ. Describe how to verify it
Ⅴ. Special notes for reviews