# ColumnNamesMatchPattern
<a name="dqdl-rule-types-ColumnNamesMatchPattern"></a>

Checks whether the names of all columns in the primary dataset match the given regular expression.

**Syntax**

```
ColumnNamesMatchPattern <PATTERN>
```
+ **PATTERN** – The pattern you want to evaluate the data quality rule against.

  **Supported column types**: Byte, Decimal, Double, Float, Integer, Long, Short

**Example: Column names match pattern**

The following example rule checks whether all columns start with the prefix "aws\$1"

```
ColumnNamesMatchPattern "aws_.*"
ColumnNamesMatchPattern "aws_.*" where "weightinkgs > 10"
```