问题
Update: This issue was resolved in the comments and is awaiting an answer
When executing the following query in PyMySQL, I receive the error ‘1064, u"You have an error in your SQL syntax;’ (full error message below)
INSERT INTO `table_name` (`id`, `colName1`, `colName2`, `colName3`)
VALUES (820, 'string', 5, 'N')
ON DUPLICATE KEY UPDATE
`colName1`=VALUES(`colName1`),
`colName2`=VALUES(`colName2`),
`colName3`=VALUES(`colName3`)
-- Tried with and without ` surrounding column names after ON DUPLICATE KEY UPDATE
Syntax in Python:
sql = "INSERT INTO `table_name` (`id`, `colName1`, `colName2`, `colName3`) VALUES (820, 'string', 5, 'N') ON DUPLICATE KEY UPDATE `colName1`=VALUES(`colName1`),`colName2`=VALUES(`colName2`),`colName3`=VALUES(`colName3`)"
I received this error both when trying to update many rows (as suggested elsewhere, using the format of the accepted answer), and for one row at a time.
As noted in the comments, the stripped down example didn't produce an error (although it was not executed with Python). The following is the actual query. Let me know if other information is needed.
Query string executed in Python:
INSERT INTO `Listings` (`id`, `row_last_updated`, `maxBidCountPreRsvMet`, `maxBidPreRsvMet`, `minBidCountPostRsvMet`, `occupancy_status`, `waitingForHnb`, `ownItNow_price`, `high_bid`, `prop_id`, `hot_property`, `status`, `end_date`, `reserve_met`, `hours`, `backupBidSet`, `listing_type`, `low_bid`, `winning_bid`, `bids`, `days`, `high_bid_updated`, `minutes`, `lowBidIsOpt1`) VALUES (820, '2018-01-28 19:16:02', '5', '234000', None, 'N', None, 0, 234000, u'9007092665103', 'N', 'New', '2018-1-31-22-0', 'N', 7, 0, 'AUCN', 0, 0, 5, 3, '2018-01-28 14:16:02.001906', 44, 0) ON DUPLICATE KEY UPDATE `row_last_updated`=VALUES(`row_last_updated`),`maxBidCountPreRsvMet`=VALUES(`maxBidCountPreRsvMet`),`maxBidPreRsvMet`=VALUES(`maxBidPreRsvMet`),`minBidCountPostRsvMet`=VALUES(`minBidCountPostRsvMet`),`occupancy_status`=VALUES(`occupancy_status`),`waitingForHnb`=VALUES(`waitingForHnb`),`ownItNow_price`=VALUES(`ownItNow_price`),`high_bid`=VALUES(`high_bid`),`prop_id`=VALUES(`prop_id`),`hot_property`=VALUES(`hot_property`),`status`=VALUES(`status`),`end_date`=VALUES(`end_date`),`reserve_met`=VALUES(`reserve_met`),`hours`=VALUES(`hours`),`backupBidSet`=VALUES(`backupBidSet`),`listing_type`=VALUES(`listing_type`),`low_bid`=VALUES(`low_bid`),`winning_bid`=VALUES(`winning_bid`),`bids`=VALUES(`bids`),`days`=VALUES(`days`),`high_bid_updated`=VALUES(`high_bid_updated`),`minutes`=VALUES(`minutes`),`lowBidIsOpt1`=VALUES(`lowBidIsOpt1`)
The full error message:
(1064, u"You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ''9007092665103', 'N', 'New', '2018-1-31-22-0', 'N', 7, 0, 'AUCN', 0, 0, 5, 3, '2' at line 1")
Side notes: Python None values are converted to MySQL null values. The same error occurred when changing None values to strings.
来源：https://stackoverflow.com/questions/48490630/what-is-syntactically-wrong-with-this-on-duplicate-key-update-query