Find all numeric columns in Db2 database

Numeric in Db2 database are columns with the following data types: smallint, integer/int, bigint, decimal/numeric, real, double, decfloat.

The query below lists all columns with numeric data types.

Query

select c.tabschema as schema_name,
       c.tabname as table_name,
       c.colno as column_id,
       c.colname as column_name,
       c.typename as data_type,
       c.length as precision,
       c.scale
from syscat.columns c
join syscat.tables t on c.tabschema = t.tabschema
                     and c.tabname = t.tabname
                     and t.type = 'T'
where c.typename in ('SMALLINT', 'INTEGER', 'BIGINT',
                     'DOUBLE', 'REAL', 'DECIMAL', 'DECFLOAT')
      and c.tabschema not like 'SYS%'
order by schema_name,
         table_name,
         column_id;

Columns

  • schema_name - name of the schema
  • table_name - name of the table
  • column_id - column position in table
  • column_name - name of the column
  • data_type - type of data
  • precision - precision of the numeric type
  • scale - scale of numeric column

Rows

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

Sample results

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