sql解析json数组

1.记录一下最近遇到的利用SQL解析Json数组的问题。

样例：该Json数组存储在字段名为：productInfo 的字段中。

[{"product_id":"001","ProductName":"样例1","SpareParts":1,"SparePartsQuantity":"2","SparePartsUnitPrice":"3","SparePartsAmount":"4"},{"product_id":"002","ProductName":"样例2","SpareParts":2,"SparePartsQuantity":"3","SparePartsUnitPrice":"4","SparePartsAmount":"5"},{"product_id":"003","ProductName":"样例3","SpareParts":3,"SparePartsQuantity":"4","SparePartsUnitPrice":"5","SparePartsAmount":"6"},{"product_id":"004","ProductName":"样例4","SpareParts":4,"SparePartsQuantity":"5","SparePartsUnitPrice":"6","SparePartsAmount":"7"},
]

SQL语句

select * from (SELECT
JSON_UNQUOTE ( JSON_EXTRACT ( JSON_EXTRACT ( productInfo , '$[*].product_id' ), CONCAT( '$[', idx, ']' ) ) ) product_id ,
JSON_UNQUOTE ( JSON_EXTRACT ( JSON_EXTRACT ( productInfo , '$[*].ProductName' ), CONCAT( '$[', idx, ']' ) ) )  ProductName,
JSON_UNQUOTE ( JSON_EXTRACT ( JSON_EXTRACT ( productInfo , '$[*].SpareParts' ), CONCAT( '$[', idx, ']' ) ) ) SpareParts ,
JSON_UNQUOTE ( JSON_EXTRACT ( JSON_EXTRACT ( productInfo , '$[*].SparePartsQuantity' ), CONCAT( '$[', idx, ']' ) ) ) SparePartsQuantity ,
JSON_UNQUOTE ( JSON_EXTRACT ( JSON_EXTRACT ( productInfo , '$[*].SparePartsUnitPrice' ), CONCAT( '$[', idx, ']' ) ) ) SparePartsUnitPrice ,
JSON_UNQUOTE ( JSON_EXTRACT ( JSON_EXTRACT ( productInfo , '$[*].SparePartsAmount' ), CONCAT( '$[', idx, ']' ) ) ) SparePartsAmount ,
FROMtable_name1JOIN (SELECT0 AS idx UNIONSELECT1 AS idx UNIONSELECT2 AS idx UNIONSELECT3 AS idx  UNIONSELECT4 AS idx  UNIONSELECT5 AS idx  UNIONSELECT6 AS idx  UNIONSELECT7 AS idx  UNIONSELECT8 AS idx  UNIONSELECT9 AS idx  UNIONSELECT10 AS idx  UNIONSELECT11 AS idx  UNIONSELECT12 AS idx  UNIONSELECT13 AS idx  UNIONSELECT14 AS idx  UNIONSELECT15  AS idx UNIONSELECT16  AS idx UNIONSELECT17  AS idx UNIONSELECT18  AS idx UNIONSELECT19  AS idx UNIONSELECT20  AS idx ) AS INDEXES
WHERE
JSON_UNQUOTE ( JSON_EXTRACT ( JSON_EXTRACT ( bjxx, '$[*]._id' ), CONCAT( '$[', idx, ']' ) ) ) is not null
) t

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