The ROW_OVERFLOW_DATA allocation unit contains the data that is stored in columns of type varchar(n), nvarchar(n), varbinary(n), and sql_variant that have been pushed off-row.

• ROW_OVERFLOW_DATA分配单元包含类型为varchar(n)、nvarchar(n)、varbinary(n)和sql_variant的列(已推送到行外)中所存储的数据。