问如何在python3中使用SQL解析器解析任意SQL get列名和表名

EN

>>> import sqlparse
>>> print([str(t) for t in parse[0].tokens if t.ttype is None][0])
'dbo.table'

def extract_tables(sql):
    """Extract the table names from an SQL statment.
    Returns a list of (schema, table, alias) tuples
    """
    parsed = sqlparse.parse(sql)
    if not parsed:
        return []

    # INSERT statements must stop looking for tables at the sign of first
    # Punctuation. eg: INSERT INTO abc (col1, col2) VALUES (1, 2)
    # abc is the table name, but if we don't stop at the first lparen, then
    # we'll identify abc, col1 and col2 as table names.
    insert_stmt = parsed[0].token_first().value.lower() == "insert"
    stream = extract_from_part(parsed[0], stop_at_punctuation=insert_stmt)
    return list(extract_table_identifiers(stream))

def parse_sql_columns(sql):
    columns = []
    parsed = sqlparse.parse(sql)
    stmt = parsed[0]
    for token in stmt.tokens:
        if isinstance(token, IdentifierList):
            for identifier in token.get_identifiers():
                columns.append(str(identifier))
        if isinstance(token, Identifier):
            columns.append(str(token))
        if token.ttype is Keyword:  # from
            break
    return columns