| 50 | |
| 51 | |
| 52 | def _default_clause(column) -> Optional[str]: |
| 53 | server_default = column.server_default |
| 54 | if server_default is not None: |
| 55 | arg = getattr(server_default, "arg", None) |
| 56 | text_val = getattr(arg, "text", None) |
| 57 | if text_val is not None: |
| 58 | return text_val |
| 59 | if arg is not None: |
| 60 | return str(arg) |
| 61 | default = column.default |
| 62 | if default is not None and getattr(default, "is_scalar", False): |
| 63 | value = default.arg |
| 64 | if isinstance(value, bool): |
| 65 | return "1" if value else "0" |
| 66 | if isinstance(value, (int, float)): |
| 67 | return str(value) |
| 68 | if isinstance(value, str): |
| 69 | return "'" + value.replace("'", "''") + "'" |
| 70 | return None |
| 71 | |
| 72 | |
| 73 | def _add_column_sql(table_name: str, column, dialect) -> str: |