malz/ekuiper-new

Autor	SHA1 Mensaxe	Data
Jiyong Huang	34ba9fa438 feat(func): Add the multiple cols func framework and implement change_cols func	%!s(int64=3) %!d(string=hai) anos
Jiyong Huang	d623e735a1 fix(valuer): visitor should visit index expression	%!s(int64=3) %!d(string=hai) anos
ngjaying	76619d8620 feat(*): add copyright statement in batch	%!s(int64=3) %!d(string=hai) anos
ngjaying	b82e2974f4 refactor(*): re-org the project structure	%!s(int64=3) %!d(string=hai) anos