selectarray_to_json(array_agg(row_to_json(t)))from(selectid, textfromwords ) t This will result in a JSON array of objects: [{"id":6001,"text":"abaissed"},{"id":6002,"text":"abbatial"},{"id":6003,"text":"abelia"},...] In exchange for a substantial jump in complexity, ...
selectarray_to_json(array_agg(row_to_json(t)))from(selectid,textfromwords)t This will result in a JSON array of objects: [{"id":6001,"text":"abaissed"},{"id":6002,"text":"abbatial"},{"id":6003,"text":"abelia"},...] In exchange for a substantial jump in complexity, we ...
Returns the array as JSON. A PostgreSQL multidimensional array becomes a JSON array of arrays. Line feeds will be added between dimension 1 elements if pretty_bool is true. Syntax: array_to_json(anyarray [, pretty_bool]) Return Type json Example Code: SELECT array_to_json('{{2,8},{79...
bank=# select json_object_keys(jobdesc) from job where jobdesc->>'jobname' = 'linux_os_vmstat'; jobname schedule values objects json_populate_record(base anyelement, from_json json, [, use_json_as_text bool=false] 这个函数较复杂,作用是按照第一个参数定义的数据类型,把第二个参数的Json数...
The info -> ‘items’ will first return items as JSON objects. Afterwards,the info->’items’->>’product’ will return all products as text. Using JSON operator in WHERE clause The WHERE clause can be used in JSON operator to filter the returning rows. For example, ...
Type: array of objects(AdditionalColumns) (or Expression with resultType array of objects). Overrides: PostgreSqlSource.withAdditionalColumns(Object additionalColumns) Parameters: additionalColumns withDisableMetricsCollection public PostgreSqlSource withDisableMetricsCollection(Object disableMetricsCollection) Set ...
These two objects are posts and they are contained in an array. And that covers the basics of what JSON is. If JSON is new to you, don’t worry, it gets easier as you work with it more. If you’re experienced with JSON, you’ll find the rest of the guide more useful as we go...
Table 9-43. AdditionaljsonbOperators Note:The||operator concatenates the elements at the top level of each of its operands. It does not operate recursively. For example, if both operands are objects with a common key field name, the value of the field in the result will just be the value...
programming. It helps us store ordered collections in JSON format. JSON arrays are enclosed within square brackets “[ ]” and can have different data types like strings, objects, numbers, etc. Postgres offers several functions to work with the JSON data, andJSON_ARRAY_ELEMENTS()is one of ...
Reads one JSON value (including objects or arrays) from the provided reader and converts it to a model. C# Azure.ResourceManager.PostgreSql.FlexibleServers.Models.PostgreSqlMigrationAdminCredentials IJsonModel<PostgreSqlMigrationAdminCredentials>.C...