[PPL][analytics-engine-compatibility] Lower isempty/isblank to CHAR_LENGTH = 0 instead of multiset IS_EMPTY#5439

yuancu merged 3 commits into

opensearch-project:mainopensearch-project/sql:mainfrom

songkant-aws:ppl-isempty-uses-charlengthsongkant-aws/sql:ppl-isempty-uses-charlengthCopy head branch name to clipboard