AstToSqlVisitor can not handle a function call as right hand side of contains-filter

[d2a-pnagel]

Steps to reproduce:

• Try to translate contains(tolower(name), tolower('A')) to SQL using the AstToSqlVisitor
  -> error:

 AttributeError("'Call' object has no attribute 'val'")

Bug spotted:

• AstToSqlVisitor._to_pattern does not take into account that the arg could be an ast.Call (and assumes a literal in the else branch)

Proposed solution:

Change

  if isinstance(arg, ast.Identifier):

Into

  if isinstance(arg, ast.Identifier | ast.Call):

[OliverHofkens]

Hi!
Thanks for the very clear and concise report, reproducer ánd proposed fix. What a blessing!
PR #49 contains the fix and a lot of test cases to cover it. Once reviewed, I'll include it in a new release (0.9.1).

[OliverHofkens]

Should be live in v0.9.1!