def get_type_conv_columns()

in core/lib/sqlparse/diff.py [0:0]

• 14 lines of code
• 7 McCabe index (conditional complexity)

def get_type_conv_columns(old_obj, new_obj):
    """
    Return a list of columns that involve type conversion when transit from left to
    right
    """
    type_conv_cols = []

    current_cols = {c.name: c for c in old_obj.column_list}
    new_cols = {c.name: c for c in new_obj.column_list}

    # find columns that will involve type conversions
    for name, old_col in current_cols.items():
        new_col = new_cols.get(name)

        # this column isn't in the new schema, so it
        # doesn't matter
        if new_col is None:
            continue

        # Type changes are considered as type conversion
        if new_col.column_type != old_col.column_type:
            type_conv_cols.append(old_col)
        else:
            # Length change also considered as type conversion
            if new_col.length != old_col.length:
                type_conv_cols.append(old_col)
    return type_conv_cols