| Column | Data Type | Description |
|---|---|---|
| column1 | CHARACTER or VARCHAR | [Column appears once for each specified column1.] String to compare to string in column2. |
| column2 | CHARACTER or VARCHAR | [Column appears once for each specified column2.] String to compare to string in column1. |
| accumulate_column | Any | [Column appears once for each specified accumulate_column.] Column to copy to output table. |
If any column1 or column2 in the input table schema supports more than 200 characters, you must cast it to VARCHAR(200). See example in StringSimilarity Syntax Elements.