Find all numeric columns in PostgreSQL database

Bart Gawrych - Dataedo Team Bart Gawrych 2019-04-30

Table of Contents:


    Numeric in PostgreSQL are columns with the following data types: smallint, integer, bigint, decimal, numeric, real, double precision, smallserial, serial, bigserial, money. The query below lists all columns with numeric data types.

    Query

    select col.table_schema,
           col.table_name,
           col.ordinal_position as col_id,
           col.column_name,
           col.data_type,
           col.numeric_precision,
           col.numeric_scale
    from information_schema.columns col
    join information_schema.tables tab on tab.table_schema = col.table_schema
                                       and tab.table_name = col.table_name
                                       and tab.table_type = 'BASE TABLE'
    where col.data_type in ('smallint', 'integer', 'bigint', 
                            'decimal', 'numeric', 'real', 'double precision',
                            'smallserial', 'serial', 'bigserial', 'money')
          and col.table_schema not in ('information_schema', 'pg_catalog')
    order by col.table_schema,
             col.table_name,
             col.ordinal_position;
    

    Columns

    • table_schema - name of the schema
    • table_name - name of the table
    • col_id - column position in table
    • column_name - name of the column
    • data_type - type of data
    • numeric_precision - precision of the column
    • numeric_scale - scale of column

    Rows

    • One row represents one column with a numeric data type
    • Scope of rows: all columns containing numeric data types in the schema
    • Ordered by database name and table name

    Sample results

    0
    There are no comments. Click here to write the first comment.