如何处理包含json/数组数据的postgres文本列

我有一个postgres（版本11）表，它保存车辆数据。数据从CSV文件填充。其中一个名为mot_history的字段是文本字段，有时为空或值为“无mot数据可用”，但通常如下所示：

[{“completedDate”：“2019-05-08T13:38:21+00:00”，“expiryDate”：“2020-11-07T00:00:00+00:00”，“testNumber”：9999999999，“odomoter”：{“unit”：“mi”，“value”：89178}，“passed”：true，“rfcAndComments”：[{“text”：“Nearside Non-responsible mirror discovered（）”，“type”：“advice”}}，{“completedDate”：“2019-04-29T08:39:45+00:00”，“expiryDate”：null，“testNumber”：999999999，“odomoter”：{“单位”：“mi”，“值”：88909}，“通过”：false，“rfcAndComments”：[{“文本”：“左侧前轮胎的切口深度超过要求，足以达到帘布层或帘布层（5.2.3（d）（i）），“类型”：“失败”}，{“文本”：”越位前轮胎切口深度超过要求，足以达到帘布层或帘线（5.2.3（d）（i）），“类型”：“不合格”}，{“文本”：“左侧后轮胎切口深度超过要求，足以达到帘布层或帘线（5.2.3（d）（i）），“类型”：“不合格”}，{“文本”：”左侧强制后视镜严重损坏，影响后视（3.3（b）（ii）），“类型”：“失败”}，{“完成日期”：“2018-05-01T14:33:15+00:00”，“到期日期”：“2019-04-30T00:00:00+00:00”，“测试编号”：99999999，“ODOMOTOR”：{“单位”：“mi”，“值”：77880}，“通过”：真，“rfcAndComments”：[“文本”：左侧强制后视镜损坏，但未严重影响后视（8.1.2a）”，“类型”：“警告”}，{“文本”：“越位后顶升点丢失”，“类型”：“警告”}]，{“完成日期”：“2017-04-26T08:41:07+00:00”，“到期日期”：“2018-04-26T00:00:00+00:00”，“测试编号”：99999999，“奥多莫特”：{“单位”：“mi”，“值”：66658}”，通过“：true，“rfcAndComments:”[{“text:”左侧非强制性后视镜损坏（）”，“type:”咨询“}，{“text:”挡风玻璃损坏的区域小于'a'区（8.3.1d）“，”type:”咨询“}]}，{“completedDate:”2016-04-27T09:46:44+00:00“，”到期日期“：”2017-04-26T00:00+00:00”，“testNumber:”999999，“odomoter:”{“单位“：“mi”，“value”：54490}，“passed”：true，“rfcAndComments”：[{“text”：“左侧强制后视镜损坏，但不会严重影响后视镜（8.1.2a）”，“type”：“advical”}，{“text”：“前制动盘磨损、凹陷或刻痕，但不会严重减弱（3.5.1i）”，“type”：“advical”}，{“text”：“制动警告灯点亮”，“type”：”咨询“}]，{“completedDate”：“2015-04-20T10:45:28+00:00”，“expiryDate”：“2016-04-19T00:00:00+00:00”，“testNumber”：99999999，“odomoter”：{“unit”：“mi”，“value”：42143}，“passed”：true，“rfcAndComments”：[{“文本”：“挡风玻璃对区域a”（8.3.1a）内小于10毫米的圆圈造成损坏”，“类型”：“咨询”，{“文本”：左侧强制后视镜严重损坏，影响后视镜，“，”类型“：”用户输入“}，“{”文本“：”停车制动器在应用时发出噪音“，”类型“：”用户输入“}]，”，“{”完成日期“：”2015-04-15T12:42:31+00:00”，“过期日期“：”null，“测试编号“：999999999”，“odomoter:“{”单位“：”mi“，”值“：41921}”，通过“：”假，“RFC注释“：[{”文本“：“左侧内前制动片厚度小于1.5 mm（3.5.1g）”，“类型”：“失效”}，{“文本”：“左侧内后制动片厚度小于1.5 mm（3.5.1g）”，“类型”：“失效”}，{“文本”：“挡风玻璃在区域‘a’（8.3.1a），“类型”：“建议”}，{“文本”：”“左侧强制后视镜严重损坏，影响后视镜”，“类型”：“用户输入”}，{“文本”：“驻车制动器在应用时发出噪音”，“类型”：“用户输入”}，{“完成日期”：“2014-04-09T17:17:55+00:00”，“到期日期”：“2015-04-08T00:00:00+00:00”，“测试编号”：99999999，“odomoter”：{“单位”：“mi”，“值”：29857}，“通过”：真，”RFC注释“：[{“文本”：“后轮胎磨损接近法定极限（4.1.E.1）”，“类型”：“建议”}，{“文本”：“两个前轮胎内缘磨损”，“类型”：“用户输入”}]}]
[{“completedDate”：“2017-06-22T07:40:58+00:00”，“expiryDate”：“2018-07-01T00:00:00+00:00”，“testNumber”：9999999，“odomoter”：{“unit”：“mi”，“value”：23985}，“passed”：true，“rfcAndComments”：[]}]
[{“completedDate”：“2020-03-05T12:11:13+00:00”，“ExpiredDate”：“2021-03-25T00:00+00:00”，“testNumber”：9999999，“odomoter”：{“unit”：“mi”，“value”：58804}，“passed”：true，“rfcAndComments”：[}，{“completedDate”：“2019-03-26T13:56:21+00:00”，“ExpiredDate”：“2020-03-25T00:00+00:00”，“testNumber”：999999，“Odor”：“unit”“mi”，“value”：“mi”，“value”：“：53674}，“通过”：true，“rfcAndComments”：[]，{“completedDate”：“2018-10-27T10:39:06+00:00”，“expiryDate”：“2019-10-29T00:00:00+00:00”，“testNumber”：99999999，“odomoter”：“{”单位“：“mi”，“value”：52580}，”通过：true，“rfcAndComments”：[{“文本”：“后制动片磨损薄1.5毫米（1.1.13（a）（ii）），”类型：“，”咨询“，{”文本：”“左侧前轮胎轻微损坏/开裂或报废轮胎开裂。（5.2.3（d）（ii）），“类型”：“建议”}，{“文本”：“越位前轮胎轻微损坏/开裂或报废轮胎开裂。（5.2.3（d）（ii）），“类型”：“建议”}，{“文本”：“左侧前轮胎磨损接近法定极限/边缘磨损2.5 mm（5.2.3（e）），“类型”：“建议”}，{“文本”：“越位前轮胎磨损接近法定极限/边缘磨损2.9 mm（5.2.3（e）），“类型”：“建议”}，{“文本”：“近侧前外胎磨损接近法定极限/边缘磨损外缘。（5.2.3（e）），“类型”：“建议”}]

下面是稍微格式化一点的，让您更好地了解结构是什么

[
    {"completedDate": "2019-05-08T13:38:21+00:00", "expiryDate": "2020-11-07T00:00:00+00:00", "testNumber": 9999999999, "odomoter": {"unit": "mi", "value": 89178}, "passed": true, "rfcAndComments": 
        [
            {"text": "Nearside Non obligatory mirror damaged ()", "type": "ADVISORY"}
        ]
    }, 
    {"completedDate": "2019-04-29T08:39:45+00:00", "expiryDate": null, "testNumber": 999999999, "odomoter": {"unit": "mi", "value": 88909}, "passed": false, "rfcAndComments": [{"text": "Nearside Front Tyre has a cut in excess of the requirements deep enough to reach the ply or cords (5.2.3 (d) (i))", "type": "FAIL"}, {"text": "Offside Front Tyre has a cut in excess of the requirements deep enough to reach the ply or cords (5.2.3 (d) (i))", "type": "FAIL"}, {"text": "Nearside Rear Tyre has a cut in excess of the requirements deep enough to reach the ply or cords (5.2.3 (d) (i))", "type": "FAIL"}, {"text": "Nearside Obligatory mirror seriously damaged, affecting the rear view (3.3 (b) (ii))", "type": "FAIL"}]}, 
    {"completedDate": "2018-05-01T14:33:15+00:00", "expiryDate": "2019-04-30T00:00:00+00:00", "testNumber": 999999999, "odomoter": {"unit": "mi", "value": 77880}, "passed": true, "rfcAndComments": [{"text": "Nearside Obligatory mirror damaged, but not seriously affecting the rear view (8.1.2a)", "type": "ADVISORY"}, {"text": "Offside Rear  jacking  point  missing", "type": "ADVISORY"}]}, 
    {"completedDate": "2017-04-26T08:41:07+00:00", "expiryDate": "2018-04-26T00:00:00+00:00", "testNumber": 999999999, "odomoter": {"unit": "mi", "value": 66658}, "passed": true, "rfcAndComments": [{"text": "Nearside Non obligatory mirror damaged ()", "type": "ADVISORY"}, {"text": "Windscreen has damage to an area less than a 40mm circle outside zone 'A' (8.3.1d)", "type": "ADVISORY"}]}, 
    {"completedDate": "2016-04-27T09:46:44+00:00", "expiryDate": "2017-04-26T00:00:00+00:00", "testNumber": 999999999, "odomoter": {"unit": "mi", "value": 54490}, "passed": true, "rfcAndComments": [{"text": "Nearside Obligatory mirror damaged, but not seriously affecting the rear view (8.1.2a)", "type": "ADVISORY"}, {"text": "Front brake disc worn, pitted or scored, but not seriously weakened (3.5.1i)", "type": "ADVISORY"}, {"text": "brake warning lamp illuminated", "type": "ADVISORY"}]}, 
    {"completedDate": "2015-04-20T10:45:28+00:00", "expiryDate": "2016-04-19T00:00:00+00:00", "testNumber": 999999999, "odomoter": {"unit": "mi", "value": 42143}, "passed": true, "rfcAndComments": [{"text": "Windscreen has damage to an area less than a 10mm circle within zone 'A' (8.3.1a)", "type": "ADVISORY"}, {"text": "nearside obligatory mirror seriously damaged, affecting the rear view", "type": "USER ENTERED"}, {"text": "parking brake noisy on application", "type": "USER ENTERED"}]}, 
    {"completedDate": "2015-04-15T12:42:31+00:00", "expiryDate": null, "testNumber": 999999999, "odomoter": {"unit": "mi", "value": 41921}, "passed": false, "rfcAndComments": [{"text": "Nearside Inner Front Brake pad(s) less than 1.5 mm thick (3.5.1g)", "type": "FAIL"}, {"text": "Nearside Inner Rear Brake pad(s) less than 1.5 mm thick (3.5.1g)", "type": "FAIL"}, {"text": "Windscreen has damage to an area less than a 10mm circle within zone 'A' (8.3.1a)", "type": "ADVISORY"}, {"text": "nearside obligatory mirror seriously damaged, affecting the rear view", "type": "USER ENTERED"}, {"text": "parking brake noisy on application", "type": "USER ENTERED"}]}, 
    {"completedDate": "2014-04-09T17:17:55+00:00", "expiryDate": "2015-04-08T00:00:00+00:00", "testNumber": 999999999, "odomoter": {"unit": "mi", "value": 29857}, "passed": true, "rfcAndComments": [{"text": "Rear Tyre worn close to the legal limit (4.1.E.1)", "type": "ADVISORY"}, {"text": "both front tyres worn on inner edges", "type": "USER ENTERED"}]}
]

我无法控制外部输入数据的格式，但我想知道是否可以使用SQL获取存储在这个类似JSON/数组的结构中的值。例如，我想返回一辆通过MOT的车辆的有效期。我知道我可以通过

with data as
(
    select mot_history::jsonb as x 
    from my_table where length(mot_history) > 50

)   
select item_object->'passed',item_object->'expiryDate',position from data,jsonb_array_elements(x) with ordinality arr(item_object, position) 
where item_object->'passed' = 'true'