util.ArrayUtil; import cn.hutool.core.util.StrUtil; import com.alibaba.fastjson2.JSONObject; import com.c3stones.json.mapper.model.DataModel; import com.c3stones.json.mapper.model.JQLModel; import lombok.Data; import lombok.NoArgsConstructor; import lombok.experimental.Accessors; import java.util....
You don't need a custom query language to query JSON in SQL Server. To query JSON data, you can use standard T-SQL. If you must create a query or report on JSON data, you can easily convert JSON data to rows and columns by calling theOPENJSONrowset function. For more information, ...
Typically ajson_tableinvocation is laterally joined, implicitly, with a source table in theFROMlist, whose rows each contain a JSON document that is used as input to the function.json_tablegenerates zero or more new rows, as determined by evaluating the row path expression against the input do...
Optional. The order of elements in the resulting JSON array can be specified to order the input rows to the aggregate.ExamplesExample 1The following example returns an empty JSON array.SQL Copy SELECT JSON_ARRAYAGG(null); ResultJSON Copy ...
TheISJSONfunction tests whether a string contains valid JSON. The following example returns rows in which the JSON column contains valid JSON text. Without explicit JSON constraint, you can enter any text in thenvarcharcolumn: SQL SELECT*FROMFamiliesWHEREISJSON(doc) >0; ...
Format query results as JSON, or export data from SQL Server as JSON, by adding the FOR JSON clause to a SELECT statement.
SQL/JSON condition json_exists lets you use a SQL/JSON path expression as a row filter, to select rows based on the content of JSON documents. You can use condition json_exists in a CASE expression or the WHERE clause of a SELECT statement. Condition json_exists checks for the existence...
(for SQL Server 2016+) make available the openjson table-valued function for parsing text in JSON format into columns and rows for display within a SQL query. The text must have a nvarchar data type. This Unicode specification of the input allows the openjson function to process international ...
至此我们完成了表的列转行、行转列,并最终达成了我们的目标。关于更多表的行转列、列转行还可以参考MaxCompute官方文档: https://www.alibabacloud.com/help/zh/maxcompute/use-cases/transpose-rows-to-columns-or-columns-to-rows 来源| 阿里云开发者公众号 作者| 高迅...
JSON文件的SQL中,select 或者where条件的表达式中不能有[*]数组通配符,数组通配符只能出现在from后的json path中。(例如select s.contacts[*] from ossobject s是不允许的,但是select * from ossobject.contacts[*]是可以的)。 SQL最大长度为16 KB,where后面表达式个数最多20个,表达式深度最多10层,聚合操作最...