jsonb_array_elements是一个内置函数,用于将JSON数组转换为一组行。它接受一个jsonb类型的参数,并返回一个包含数组中每个元素的行集。每个行包含一个名为"value"的列,其中包含数组元素的值。 在执行jsonb_array_elements时,可以使用WHERE子句来添加条件,以过滤要返回的数组元素。条件可以基于元素的值、索引或其他属...
WITH numbered_elements AS ( SELECT value, ROW_NUMBER() OVER (ORDER BY (SELECT NULL)) AS rn FROM jsonb_array_elements('[{"key1": "value1"}, {"key2": "value2"}, {"key3": "value3"}]'::jsonb) ) SELECT value FROM numbered_elements WHERE rn = 2; 在这个查询中: jsonb_array...
原因: content 有错误数据,加条件去掉错误数据即可。 selectid, jsonb_array_elements(content)from"fd_content_behavior_at_2WIQRCZAPA"wherecontent::text!='null' 或者 selectid, jsonb_array_elements(content)from"fd_content_behavior_at_2WIQRCZAPA"wherecontentisnotnull...
knex.rawQuery(`select s.*,j from qasformones s cross join lateral json_array_elements(header_format) as j WHERE j->>show like '%'`) Get the following error error json_array_elements(json[]) does not exist select s.*,j from qasformones s cross join lateral json_array_elements(header...
【CPU】: X86 【问题描述】*：创建物化视图报错，错误信息：物化视图不支持[ARR$_0x7f9f7cf964a0]的...
{ field:'ghi'}]//id=2, jsonColumn=[{ field:'abc'},{ field:'123'},{ field:'456'}]//id=3, jsonColumn=[{ field:'abc'},{ field:'789'},{ field:'XXX'}]SELECTt.id, array_to_json(array_agg(j))FROMyour_table t, json_array_elements(t.jsonColumn) jWHEREj->>'field'='abc...
Let's say I want to delete from that hours array inside the JSON data type where the hour = 8. How can I do this? The only way I know to remove an element from an array is knowing the exact position which I would do something like this: UPDATE employees SET data = JSON_REPLAC...
问Postgres jsonb_array_elementsEN一.准备 ### 一.准备 <!--前提条件--> 要求OS上已经安装...
a scalar 原因：content 有错误数据，加条件去掉错误数据即可。select id, jsonb_array_elements(content) from "fd_content_behavior_at_2WIQRCZAPA" where content::text!='null'或者 select id, jsonb_array_elements(content) from "fd_content_behavior_at_2WIQRCZAPA" where content is not null ...