---
title: Excluded Column Data Types
slug: kronpam-reference-guide-3-9-0/excluded-column-data-types
docTags: 
createdAt: 2026-06-30T13:03:55.897Z
---

Certain column data types SHOULD be excluded during discovery due to performance and low utility for sensitive-data inference. Engine-specific parameters are provided in System Config Manager:

·         **sdd.query.oracle.column.excluded\_types** : Defines excluded column types for Oracle databases.

·         **sdd.query.postgresql.column.excluded\_types** : Defines excluded column types for PostgreSQL databases.

·         **sdd.query.teradata.column.excluded\_types** : Defines excluded column types for Teradata databases.

·         **sdd.query.sqlserver.column.excluded\_types** : Defines excluded column types for SQL Server databases.

·         **sdd.query.mysql.column.excluded\_types** : Defines excluded column types for MySQL databases.

:::hint{type="info"}
Example:

sdd.query.oracle.column.excluded\_types = CLOB;BLOB;NCLOB;BFILE

sdd.query.postgresql.column.excluded\_types = BYTEA

sdd.query.sqlserver.column.excluded\_types = VARBINARY;VARBINARY(MAX);IMAGE;XML

sdd.query.mysql.column.excluded\_types   = BLOB;MEDIUMBLOB;LONGBLOB;GEOMETRY
:::