postgresql-9.4

Using Postgres 9.4, I am looking for a way to merge two (or more) json or jsonb columns in a query. Consider the following table as an example: id | json1 | json2 ---------------------------------------- 1 | {'a':'b'} | {'c':'d'} 2 | {'a1':'b2'} | {'f':{'g' : 'h'}} Is it possible to have the query return the following: id | json ---------------------------------------- 1 | {'a':'b', 'c':'d'} 2 | {'a1':'b2', 'f':{'g' : 'h'}} Unfortunately, I can't define a function as described here . Is this possible with a "traditional" query? Here is the complete list of build-in functions that can be used

I'm using Postgresql 9.4.5. When I go to psql and run \l I get Encoding is UTF8 Collate is en_US.UTF-8 cCtype is en_US.UTF-8 I have products table with a name column that has the following names: T-700A Grouped T-700 AGrouped T-700A Halved T-700 Whole When I execute the following SQL in pql SELECT name FROM products WHERE name LIKE '%T-700%' ORDER By name ASC; I get the following output T-700A Grouped T-700 AGrouped T-700A Halved T-700 Whole That sorting doesn't look natural. I expected to get T-700 AGrouped T-700 Whole T-700A Grouped T-700A Halved It doesn't seem like Postgres is handling

I use postgres9.4 , and there exists relation "Patients" has column "contact" with type jsonb[] , how to transfer type jsonb[] to jsonb ? The following is on record. =>select name, contact from "Patients" where contact is not null; name | contact --------+----------------------------------------------------------------------------------------------------- "tom" | {"{\"name\": \"tom\", \"phone\": \"111111\", \"address\": \"shanghai\", \"relation\": \"your_relation\"}"} I have tried as the followings, contact4 is column with type jsonb alter table "Patients" alter column contact4 type 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

In PostgreSQL 9.4 the window functions have the new option of a FILTER to select a sub-set of the window frame for processing. The documentation mentions it, but provides no sample. An online search yields some samples, including from 2ndQuadrant but all that I found were rather trivial examples with constant expressions. What I am looking for is a filter expression that includes the value of the current row. Assume I have a table with a bunch of columns, one of which is of date type: col1 | col2 | dt ------------------------ 1 | a | 2015-07-01 2 | b | 2015-07-03 3 | c | 2015-07-10 4 | d |