Postgres：使用psycopg2或附近未终止的引用字符串

Posted 2023-03-28

【中文标题】Postgres：使用psycopg2或附近未终止的引用字符串

【英文标题】：Postgres: unterminated quoted string at or near using psycopg2

【发布时间】：2017-02-16 21:24:27

【问题描述】：

我有一个包含两个表 stream_239_1_1_1_1234_0 和 stream_239_0_0_40_1234_0 的 postgres 数据库。每个表都有一个名为alarm 的列。我正在使用psycopg2 Python 客户端将数据保存到这些表中。

将数据插入stream_239_1_1_1_1234_0 没有问题，如下所示：

INSERT INTO stream_239_1_1_1_1234_0 (alarm) VALUES ('"delay_max":
0.0, "ts_errors": ["count": 0, "state": 0, "is_priority1": true, "name": "SYNC", "is_priority2": false, "count": 0, "state": 0,
"is_priority1": true, "name": "BYTE", "is_priority2": false,
"count": 0, "state": 0, "is_priority1": true, "name": "PAT",
"is_priority2": false, "count": 0, "state": 0, "is_priority1": true,
"name": "CC", "is_priority2": false, "count": 0, "state": 0,
"is_priority1": true, "name": "PMT", "is_priority2": false, "count":
0, "state": 0, "is_priority1": true, "name": "PID", "is_priority2":
false, "count": 0, "state": 0, "is_priority1": false, "name": "TS",
"is_priority2": true, "count": 0, "state": 0, "is_priority1": false,
"name": "CRC", "is_priority2": true, "count": 0, "state": 0,
"is_priority1": false, "name": "PCR", "is_priority2": true, "count":
0, "state": 0, "is_priority1": false, "name": "ACC", "is_priority2":
true, "count": 0, "state": 0, "is_priority1": false, "name": "PTS",
"is_priority2": true, "count": 0, "state": 0, "is_priority1": false,
"name": "CAT", "is_priority2": true], "is_stream_paused": false,
"delay_min": 0.0, "ac_err": 0.0, "oj_err":
0.0,"ipm_errors":["mnv":-3017, "mxv":2996, "mev":0, "mi":1000, "cr":0, "Bps":276667.104687, "df":4919, "pkl":0, "oos":0, "rei":0,
"reo":0, "ncl":0.0, "slf":0.0, "mtl":0.0, "ld":0, "lpl":0, "lr":0.0],
"timestamp": "2017:02:16:16:10:49","id3_data": "None"');

而我在此查询中遇到此错误

INSERT INTO stream_239_0_0_40_1234_0 (alarm) VALUES ('"delay_max":
0.0, "ts_errors": ["count": 0, "state": 0, "is_priority1": true, "name": "SYNC", "is_priority2": false, "count": 0, "state": 0,
"is_priority1": true, "name": "BYTE", "is_priority2": false,
"count": 0, "state": 0, "is_priority1": true, "name": "PAT",
"is_priority2": false, "count": 0, "state": 0, "is_priority1": true,
"name": "CC", "is_priority2": false, "count": 0, "state": 0,
"is_priority1": true, "name": "PMT", "is_priority2": false, "count":
0, "state": 0, "is_priority1": true, "name": "PID", "is_priority2":
false, "count": 0, "state": 0, "is_priority1": false, "name": "TS",
"is_priority2": true, "count": 0, "state": 0, "is_priority1": false,
"name": "CRC", "is_priority2": true, "count": 0, "state": 0,
"is_priority1": false, "name": "PCR", "is_priority2": true, "count":
0, "state": 0, "is_priority1": false, "name": "ACC", "is_priority2":
true, "count": 0, "state": 0, "is_priority1": false, "name": "PTS",
"is_priority2": true, "count": 0, "state": 0, "is_priority1": false,
"name": "CAT", "is_priority2": true], "is_stream_paused": false,
"delay_min": 0.0, "ac_err": 0.0, "oj_err":
0.0,"ipm_errors":["mnv":-140, "mxv":143, "mev":0, "mi":1000, "cr":0, "Bps":697856.570014, "df":0, "pkl":0, "oos":0, "rei":0, "reo":0,
"ncl":0.0, "slf":0.0, "mtl":0.0, "ld":0, "lpl":0, "lr":0.0],
"timestamp": "2017:02:16:16:16:43","id3_data": ["Payload":
"2016:05:12T11:47:41:000z", "id3_timestamp":
"2017:02:16:21:16:40"]');

错误是：

在 "'"delay_max": 0.0 处或附近未终止的带引号的字符串， "ts_errors": ["count": 0, "state": 0, "is_priority1": true, "name": "SYNC", "is_priority2": false, "count": 0, "state": 0, “is_priority1”：真，“名称”：“字节”，“is_priority2”：假， “计数”：0，“状态”：0，“is_priority1”：真，“名称”：“PAT”， "is_priority2": false, "count": 0, "state": 0, "is_priority1": true, “名称”：“CC”，“is_priority2”：假，“计数”：0，“状态”：0， “is_priority1”：真，“名称”：“PMT”，“is_priority2”：假，“计数”： 0，“状态”：0，“is_priority1”：真，“名称”：“PID”，“is_priority2”： 假，“计数”：0，“状态”：0，“is_priority1”：假，“名称”：“TS”， "is_priority2": true, "count": 0, "state": 0, "is_priority1": false, “名称”：“CRC”，“is_priority2”：true，“计数”：0，“状态”：0， “is_priority1”：假，“名称”：“PCR”，“is_priority2”：真，“计数”： 0，“状态”：0，“is_priority1”：假，“名称”：“ACC”，“is_priority2”： true，“count”：0，“state”：0，“is_priority1”：false，“name”：“PTS”， "is_priority2": true, "count": 0, "state": 0, "is_priority1": false, “名称”：“CAT”，“is_priority2”：true]，“is_stream_paused”：false， “delay_min”：0.0，“ac_err”：0.0，“oj_err”： 0.0，“ipm_errors”：[“mnv”：-140，“mxv”：143，“mev”：0，“mi”：1000，“cr”：0，“Bps”：697856.570014，“df”：0 , "pkl":0, "oos":0, "rei":0, "reo":0, “ncl”：0.0，“slf”：0.0，“mtl”：0.0，“ld”：0，“lpl”：0，“lr”：0.0]， “时间戳”：“2017：02：16：16：16：43”，“id3_data”：[“有效载荷”： “2016:05:12T11:47:41:000z”第 1 行：...ERT INTO stream_239_0_0_40_1234_0（警报）值（'"delay_m...

如果我尝试从 postgres shell 手动运行查询，它工作正常！ 我查看了this question，但我不确定它与我的情况有什么关系。 psycopg2 Python 客户端已经可以很好地处理第一个查询！

有什么建议吗？

编辑 "ac_err": 0.0, "oj_err": 0.0, "id3_data": ["Payload": "2016:05:12T11:47:41:000z", "id3_timestamp": "2017:02: 16:21:16:40"], "delay_max": 0.0, "delay_min": 0.0, "timestamp": "2017:02:16:16:16:43", "ts_errors": ["name" ：“SYNC”，“count”：0，“state”：0，“is_priority1”：true，“is_priority2”：false，“name”：“BYTE”，“count”：0，“state”：0 , "is_priority1": true, "is_priority2": false, "name": "PAT", "count": 0, "state": 0, "is_priority1": true, "is_priority2": false, "名称”：“CC”，“计数”：0，“状态”：0，“is_priority1”：真，“is_priority2”：假，“名称”：“PMT”，“计数”：0，“状态” ：0，“is_priority1”：真，“is_priority2”：假，“名称”：“PID”，“计数”：0，“状态”：0，“is_priority1”：真，“is_priority2”：假， “name”：“TS”，“count”：0，“state”：0，“is_priority1”：false，“is_priority2”：true，“name”：“CRC”，“count”：0，“状态”：0，“is_priority1”：假，“is_priority2”：真，“名称”：“PCR”，“计数”：0，“状态”：0，“is_priority1”：假，“is_priority2”：真， “姓名": "ACC", "count": 0, "state": 0, "is_priority1": false, "is_priority2": true, "name": "PTS", "count": 0, "state": 0，“is_priority1”：假，“is_priority2”：真，“名称”：“CAT”，“计数”：0，“状态”：0，“is_priority1”：假，“is_priority2”：真]， “ipm_errors”：[“cr”：0，“df”：0，“ld”：0，“lr”：0.0，“mi”：1000，“Bps”：697856.570014，“lpl”：0，“mev” “：0，“mnv”：-140，“mtl”：0.0，“mxv”：143，“ncl”：0.0，“oos”：0，“pkl”：0，“rei”：0，“reo” : 0, "slf": 0.0], "is_stream_paused": false

编辑我找到了答案，我会发布它

【问题讨论】：

根据JSONLint是一个有效的JSON文本。

【参考方案1】：

问题基本上在于“Payload”中形成 JSON 的字符串的编码：“2016:05:12T11:47:41:000z”。

此有效负载来自 C++ 函数，并被传递到 Python 端。它代表分组数据。出于某种原因，有效载荷有一个奇怪的编码。尽管我确保 Payload 是字符串格式并且对象是有效的 JSON 格式，但 psycopg2 无法识别这种编码，这证明了我能够手动运行查询的原因。我通过删除有效负载数据末尾的 Null 终止字符来解决问题