jsonb

For versions greater than 9.5 see this question I have created a table in PostgreSQL using this: CREATE TEMP TABLE jsontesting AS SELECT id, jsondata::jsonb FROM ( VALUES (1, '["abra","value","mango", "apple", "sample"]'), (2, '["japan","china","india", "russia", "australia"]'), (3, '["must", "match"]'), (4, '["abra","value","true", "apple", "sample"]'), (5, '["abra","false","mango", "apple", "sample"]'), (6, '["string","value","mango", "apple", "sample"]'), (7, '["must", "watch"]') ) AS t(id,jsondata); Now what I wanted was to add Something like append_to_json_array takes in the actual

After upgrading to PostgreSQL 9.4, how do I convert all my JSON columns into JSONB columns? I don't mind losing any duplicate keys and whitespace. Tometzky ALTER TABLE t ALTER COLUMN j TYPE jsonb USING j::text::jsonb; In the context of Rails, here is an ActiveRecord migration alternative: def change reversible do |dir| dir.up { change_column :models, :attribute, 'jsonb USING CAST(attribute AS jsonb)' } dir.down { change_column :models, :attribute, 'json USING CAST(attribute AS json)' } end end I tested this on a table with 120 000 records, each record having four json columns and it took me

I'm looking for a way to query postgres jsonb field with kind of "IN" clause inside an array. Let's assume I have a table CREATE TABLE test( id uuid, test_content jsonb, PRIMARY KEY(id) ); INSERT INTO test (id, test_content) VALUES ('aa82a8b8-33ef-4937-bd8c-8a4b40960f18', '[{"label":"a","label1":"1"},{"label":"b","label1":"2"}]'), ('ba82a8b8-33ef-4937-bd8c-8a4b40960f18', '[{"label":"c","label1":"3"}]'), ('da82a8b8-33ef-4937-bd8c-8a4b40960f18', '[{"label":"d","label1":"4"}]'); I need to select rows where label inside test_content's array might be b or d . I tried SELECT * FROM test WHERE test

I have a table on PostgreSQL with a field named data that is jsonb with a lot of objects, I want to make an index to speed up the queries. I'm using few rows to test the data (just 15 rows) but I don't want to have problems with the queries in the future. I'm getting data from the Twitter API, so with a week I get around 10gb of data. If I make the normal index CREATE INDEX ON tweet((data->>'created_at')); I get a text index, if I make: Create index on tweet((CAST(data->>'created_at' AS timestamp))); I get ERROR: functions in index expression must be marked IMMUTABLE I've tried to make it

Referring to the original stackoverflow question , I am trying to apply gin indexes to keys in objects of an array in Postgres 9.4 but I'm not getting the results as stated in the first answer. Can you please rectify the error? The steps I followed have been written below. Part 1: Creating table and indexes CREATE TABLE tracks (id serial, artists jsonb); CREATE INDEX tracks_artists_gin_idx ON tracks USING gin (artists); INSERT INTO tracks (id, artists) VALUES (1, '[{"name": "blink-182"}]'); INSERT INTO tracks (id, artists) VALUES (2, '[{"name": "The Dirty Heads"}, {"name": "Louis Richards"}]')

This question already has an answer here: Upgrade PostgreSQL JSON column to JSONB? 2 answers In postgresql 9.4 the new JSONB was incorporated. On a live DB in postgresql 9.3 I have a JSON column. I want to migrate it to JSONB. Assuming I migrated the DB first to 9.4 (using pg_upgrade). What do I do next? Marth ALTER TABLE table_with_json ALTER COLUMN my_json SET DATA TYPE jsonb USING my_json::jsonb; In the context of Rails, here is an ActiveRecord migration alternative: def change reversible do |dir| dir.up { change_column :models, :attribute, 'jsonb USING CAST(attribute AS jsonb)' } dir.down