feat: #190 improve mysql grammer (#196)

* refactor: generic rename to mysql

* refactor: g4 with mysql syntax

* test: mysql syntax

* refactor: remove useless keywords

* refactor: remove nonReserved keywords

* refactor: lint specificFunction

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Co-authored-by: liuyi <liuyi@dtstack.com>

scripts/antlr4.js

@@ -64,7 +64,7 @@ function main() {
             compile(language);
         });
     } else if (argv.lang) {
-        // compile single: yarn antlr4 --lang=generic
+        // compile single: yarn antlr4 --lang=mysql
         const supportedLanguage = languageEntries.some((language) => language === argv.lang);
         if (supportedLanguage) {
             compile(argv.lang);