Find all numeric columns in Snowflake

In snowflake almost all numeric types are aliases to NUMBER type with diffent precision and scale. Types in Snowflake:

  • DECIMAL, NUMERIC are aliases to NUMBER

  • INT, INTEGER, BIGINT, SMALLINT, TINYINT, BYTEINT are aliases to NUMBER(38, 0)

  • FLOAT, FLOAT4, FLOAT8 - Snowflake uses double-precision (64 bit) IEEE 754 floating point numbers.

  • DOUBLE, DOUBLE PRECISION, REAL - synonymous to FLOAT

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 ('NUMBER', 'FLOAT')
order by col.table_schema,
         col.table_name,
         col.ordinal_position;

Columns

  • table_schema - 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
  • 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 database (schema)
  • Ordered by table schema name and table name

Sample results

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