postgresql-9.1

We have a problem grouping arrays into a single array. We want to join the values from two colums into one single array and aggregate these arrays of multiple rows. Given the following input: | id | name | col_1 | col_2 | | 1 | a | 1 | 2 | | 2 | a | 3 | 4 | | 4 | b | 7 | 8 | | 3 | b | 5 | 6 | We want the following output: | a | { 1, 2, 3, 4 } | | b | { 5, 6, 7, 8 } | The order of the elements is important and should correlate with the id of the aggregated rows. We tried the array_agg function: SELECT array_agg(ARRAY[col_1, col_2]) FROM mytable GROUP BY name; Unfortunately, this statement

I'm using PostgreSQL 9.1 and I have this data structure: A B ------- 1 a 1 a 1 b 1 c 1 c 1 c 1 d 2 e 2 e I need a query that produces this result: 1 4 {{c,3},{a,2},{b,1},{d,1}} 2 1 {{e,2}} A=1, 4 rows total with A=1, the partial counts (3 rows with c value, 2 rows with a value, .....) The distinct values of column "A" The count of all rows related to the "A" value An array contains all the elements related to the "A" value and the relative count of itself The sort needed for the array is based of the count of each group (like the example 3,2,1,1). This should do the trick: SELECT a , sum(ab_ct

I'm trying to change the default value for the client_encoding configuration variable for a PostgreSQL database I'm running. I want it to be UTF8 , but currently it's getting set to LATIN1 . The database is already set to use UTF8 encoding: application_database=# \l List of databases Name | Owner | Encoding | Collate | Ctype | Access privileges ----------------------+----------+----------+-------------+-------------+-------------------------------------- postgres | postgres | LATIN1 | en_US | en_US | application_database | postgres | UTF8 | en_US.UTF-8 | en_US.UTF-8 | postgres=CTc/postgres + |

Closed. This question is off-topic. It is not currently accepting answers. Learn more . Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 3 years ago . Operating system used is linux. I have tried Navicat and SQL Power Architect . They did display relations between tables in the same schema. I have some foreign key constraints which reference tables in a different schema. Am I missing something with respect to Navicat and PostgreSQL Maestro? Can they not display the inter schema relations? Is there data visualisation tool for postgresql which is

Earlier today, I was trying to restore my PostgreSQL (8.1.22) database from production using pgAdmin III. However, after the restoration procedure finished, it started throwing errors like: WARNING: errors ignored on restore: 4 Also, upon investigation I found that out of all the tables 3 tables hadn't been restored (contained 0 rows). When I checked the log, I found the follwoing error near the 3 tables: pg_restore: [archiver (db)] Error from TOC entry 5390; 0 442375 TABLE DATA tablename postgres pg_restore: [archiver (db)] COPY failed: ERROR: invalid byte sequence for encoding "UTF8":