不能使用计算列 '%1' 作为 image 列或 varbinary(MAX) 列的全文类型列。此计算列必须是确定的、精确的或持久化的列，而且大小要小于等于 %2 个字符。

Computed column '%1' cannot be used as full-text type column for image or varbinary(MAX) column. This computed column must be deterministic, precise or persisted, with a size less or equal than %2 characters.