select database()

[nasodaengineer]

Describe the bug When I want to get the currently used database, I find that it cannot be parsed

To Reproduce Steps to reproduce the behavior:

1. Example SQL String sql = "select database()";
2. Parsing this SQL using JSqlParser with this statements CCJSqlParserUtil.parse(sql);
3. Exception

Encountered unexpected token: "database" "DATABASE"
    at line 1, column 8.

Was expecting one of:

    "*"
    "STRAIGHT_JOIN"

Expected behavior

System

• mysql 8.0.27
• jdk-liberica-11.0.13
• 4.2 or 4.3

[manticore-projects]

Keyword issues, which is solved in PR #1382 (pending).