public static SelectStmtInfo ParseSQL(string sql)
{
Antlr4.Runtime.AntlrInputStream input = new Antlr4.Runtime.AntlrInputStream(sql);
SelectSQLLexer lexer = new SelectSQLLexer(input);
ErrorListener errorListner = new ErrorListener();
Antlr4.Runtime.UnbufferedTokenStream tokens = new Antlr4.Runtime.UnbufferedTokenStream(lexer);
SelectSQLParser parser = new SelectSQLParser(tokens);
parser.AddErrorListener(errorListner);
var tree = parser.compileUnit();
ParseTreeWalker walker = new ParseTreeWalker();
SelectSQLTreeListener lsn = new SelectSQLTreeListener();
walker.Walk(lsn, tree);
return(lsn.SelectStmt);
}
