pgsql json array
As of PostgreSQL 9.4, you can use the ? operator: select info->>'name' from rabbits where (info->'food')::jsonb ? 'carrots';. You can even index the ? query on ... , One way with json_array_elements : (assuming that your table is your_table and json column name is meta ) select j.value->>'lable' from ..., I'm not sure you have a json[] (PostgreSQL array of json values) typed column, or a json typed column, which appears to be a JSON array (like ...,I post the answer originally written by pozs in the comment section. unnest() is for PostgreSQL's array types. Instead one of the following function can be used:. , Please check JSONB Indexing section in Postgres documentation. For your case index config may be the following: CREATE INDEX ...,To unnest the JSON array. Then use array_agg() or an ARRAY constructor to build a Postgres array from it. Or string_agg() to build a text string. Aggregate ... , The json array has a key people so use my_json->'people' in the function: with my_table(my_json) as ( values( ' "people": [ "name": "Toby", ...,Table 9-41 shows the functions that are available for creating and manipulating JSON (see Section 8.14) data. Returns the array as JSON. A PostgreSQL multidimensional array becomes a JSON array of arrays. Line feeds will be added between dimension 1 eleme,For any scalar type other than a number, a Boolean, or a null value, the text representation will be used, properly quoted and escaped so that it is a valid JSON string. Returns the array as a JSON array. A PostgreSQL multidimensional array becomes a JSON,
| 相關軟體 PostgreSQL (64-bit) 資訊 | |
|---|---|
 pgsql json array 相關參考資料
Check if a Postgres JSON array contains a string - Stack Overflow
As of PostgreSQL 9.4, you can use the ? operator: select info->>'name' from rabbits where (info->'food')::jsonb ? 'carrots';. You can even index the ? query on ..... https://stackoverflow.com How to get data from postgresql json array field in an array ...
One way with json_array_elements : (assuming that your table is your_table and json column name is meta ) select j.value->>'lable' from ... https://stackoverflow.com How to get elements from Json array in PostgreSQL - Stack Overflow
I'm not sure you have a json[] (PostgreSQL array of json values) typed column, or a json typed column, which appears to be a JSON array (like ... https://stackoverflow.com How to turn a json array into rows in postgres - Stack Overflow
I post the answer originally written by pozs in the comment section. unnest() is for PostgreSQL's array types. Instead one of the following function can be used:. https://stackoverflow.com Index JSON Array in Postgres DB - Stack Overflow
Please check JSONB Indexing section in Postgres documentation. For your case index config may be the following: CREATE INDEX ... https://stackoverflow.com postgresql - How to turn json array into postgres array ...
To unnest the JSON array. Then use array_agg() or an ARRAY constructor to build a Postgres array from it. Or string_agg() to build a text string. Aggregate ... https://dba.stackexchange.com postgresql json array query - Stack Overflow
The json array has a key people so use my_json->'people' in the function: with my_table(my_json) as ( values( ' "people": [ "name": "Toby", ... https://stackoverflow.com PostgreSQL: Documentation: 9.3: JSON Functions and Operators
Table 9-41 shows the functions that are available for creating and manipulating JSON (see Section 8.14) data. Returns the array as JSON. A PostgreSQL multidimensional array becomes a JSON array of arr... https://www.postgresql.org PostgreSQL: Documentation: 9.4: JSON Functions and Operators
For any scalar type other than a number, a Boolean, or a null value, the text representation will be used, properly quoted and escaped so that it is a valid JSON string. Returns the array as a JSON ar... https://www.postgresql.org PostgreSQL: Documentation: 9.5: JSON Functions and Operators
https://www.postgresql.org |