如何搜索包含JSON数组的SQL列 [英] How to search SQL column containing JSON array

问题描述

我有一个具有单个JSON数组的SQL列:

I have a SQL column that has a single JSON array:

{"names":["Joe","Fred","Sue"]}

给出搜索字符串，如何使用SQL在names数组中搜索匹配项?我正在使用SQL 2016，并查看了JSON_QUERY，但不知道如何在JSON数组上搜索匹配项.像下面这样的东西会很好.

Given a search string, how can I use SQL to search for a match in the names array? I am using SQL 2016 and have looked at JSON_QUERY, but don't know how to search for a match on a JSON array. Something like below would be nice.

SELECT *
FROM table
WHERE JSON_QUERY(column, '$.names') = 'Joe'

推荐答案

要在JSON数组中进行搜索，需要使用OPENJSON

For doing a search in a JSON array, one needs to use OPENJSON

DECLARE @table TABLE (Col NVARCHAR(MAX))
INSERT INTO @table VALUES ('{"names":["Joe","Fred","Sue"]}')

SELECT * FROM @table 
WHERE 'Joe' IN ( SELECT value FROM OPENJSON(Col,'$.names'))  

或者作为替代方案，可以将其与CROSS APPLY一起使用.

or as an alternative, one can use it with CROSS APPLY.

SELECT * FROM 
    @table 
    CROSS APPLY OPENJSON(Col,'$.names')
WHERE value ='Joe'

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