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by Graham Williams
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PostgreSQL Table Schema

$ psql -d sample_data
psql (12.4 (Ubuntu 12.4-0ubuntu0.20.04.1))
Type "help" for help.

sample_data=# SELECT column_name, data_type
sample_data-# FROM   information_schema.columns
sample_data-# WHERE  table_name = 'population_postcode';

     column_name     | data_type 
---------------------+-----------
 postcode            | integer
 population          | integer
(2 rows)

sample_data=#


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