问在木星笔记本中获取数据花费的时间太长了

EN

table_row_count = 1000000
batch_size = 10000

sql = """SELECT t.*
FROM (
    SELECT ROWNUM AS row_num,
           sub_t.*
    FROM (
        SELECT name_employer
        FROM my_table
        WHERE section = 'OTHER'
    ) sub_t
) t
WHERE t.row_num BETWEEN :LOWER_BOUND AND :UPPER_BOUND"""

data = []
for lower_bound in range(0, table_row_count, batch_size):
    cursor.execute(sql, {'LOWER_BOUND': lower_bound, 
                         'UPPER_BOUND': lower_bound + batch_size - 1})

    for row in cursor.fetchall():
       data.append(row)