使用 pymysql 和 xlrd 将 xlsx 文件加载到 table 时的日期值不正确

Question

（非常）初学者 python 用户在这里。我正在尝试使用 xlrd 和 pymysql python 库将 xlsx 文件加载到 MySQL table 中，但出现错误：

pymysql.err.InternalError: (1292, "Incorrect date value: '43500' for column 'invoice_date' at row 1")

我的 table 的 invoice_date 的数据类型是 DATE。我的 xlsx 文件中此字段的格式也是日期。如果我将 table 数据类型更改为 varchar，一切正常，但我更愿意将数据作为日期加载到我的 table 中，而不是事后转换。关于为什么我会收到此错误的任何想法？看起来 xlrd 或 pymysql 在我的 xlxs 文件中读取 '2/4/2019' 作为 '43500' 和 mysql 由于数据类型不匹配而拒绝它。

import xlrd
import pymysql as MySQLdb

# Open workbook and define first sheet
book = xlrd.open_workbook("2019_Complete.xlsx")
sheet = book.sheet_by_index(0)

# MySQL connection
database = MySQLdb.connect (host="localhost", user="root",passwd="password", db="vendor")

# Get cursor, which is used to traverse the databse, line by line
cursor = database.cursor()

# INSERT INTO SQL query
query = """insert into table values (%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s)"""

# Create a For loop to iterate through each row in the XLS file, starting at row 2 to skip the headers
for r in range(1, sheet.nrows):
    lp = sheet.cell(r,0).value
    pallet_lp = sheet.cell(r,1).value
    bol = sheet.cell(r,2).value
    invoice_date = sheet.cell(r,3).value
    date_received = sheet.cell(r,4).value
    date_repaired = sheet.cell(r,5).value
    time_in_repair = sheet.cell(r,6).value
    date_shipped = sheet.cell(r,7).value
    serial_number = sheet.cell(r,8).value
    upc = sheet.cell(r,9).value
    product_type = sheet.cell(r,10).value
    product_description = sheet.cell(r,11).value
    repair_code = sheet.cell(r,12).value
    condition = sheet.cell(r,13).value
    repair_cost = sheet.cell(r,14).value
    parts_cost = sheet.cell(r,15).value
    total_cost = sheet.cell(r,16).value
    repair_notes = sheet.cell(r,17).value
    repair_cap = sheet.cell(r,18).value
    complaint = sheet.cell(r,19).value
    delta = sheet.cell(r,20).value

    # Assign values from each row
    values = (lp, pallet_lp, bol, invoice_date, date_received, date_repaired, time_in_repair, date_shipped, serial_number, upc, product_type, product_description, repair_code, condition, repair_cost, parts_cost, total_cost, repair_notes, repair_cap, complaint, delta)

    # Execute sql Query
    cursor.execute(query, values)

# Close the cursor
cursor.close()

# Commit the transaction
database.commit()

# Close the database connection
database.close()

# Print results
print ("")
columns = str(sheet.ncols)
rows = str(sheet.nrows)
print ("I just imported " + columns + " columns and " + rows + " rows to MySQL!")

Answer 1

可以看到 for a more detailed explanation, but basically Excel treats dates as a number relative to 1899-12-31, and so to convert your date value to an actual date you need to convert that number into an ISO format date which MySQL will accept. You can do that using date.fromordinal and date.isoformat。例如：

dval = 43500
d = date.fromordinal(dval + 693594)
print(d.isoformat())

输出：

2019-02-04

使用 pymysql 和 xlrd 将 xlsx 文件加载到 table 时的日期值不正确

Incorrect date value when loading xlsx file to table using pymysql and xlrd

python

mysql

date

xlrd

pymysql