postgresql 字符串变json 再还原

标签：integer   color   div   rom   text   http   字符   record   gre   

SELECT to_json(‘some "text"‘::text)
select array[to_json(‘Some "text"‘::TEXT)] ;

select array_to_json(array[to_json(‘Some "text"‘::TEXT)]) ;

select array_to_json(array[to_json(‘Some "text"‘::TEXT)])->>0 ;

select length( array_to_json(array[to_json(‘Some "text"‘::TEXT)])->>0 );

-- 神奇的postgresql json 转表 与表转josn   表中列的神奇操作
select * from json_to_record(‘{"a":1,"b":[1,2,3],"c":"bar"}‘) as x(a int, b INTEGER[], c text)
SELECT row_to_json(
  a.*
) from (select * from json_to_record(‘{"a":1,"b":[1,2,3],"c":"bar"}‘) as x(a int, b INTEGER[], c text)) a

postgresql 字符串变json 再还原

标签：integer   color   div   rom   text   http   字符   record   gre   

原文地址：https://www.cnblogs.com/huanglei2010/p/13111300.html