sql字段名称CouNo 数据类型int 说明课程编号，非空，主键，标识列，初始值为1，增量值为1

To create a SQL field with the specifications you described, you can use the following syntax:

CREATE TABLE table_name (
  CouNo INT NOT NULL PRIMARY KEY IDENTITY(1,1)
);

This will create a table with the field name `CouNo` of data type `int`. The `NOT NULL` constraint ensures that the field cannot be empty. The `PRIMARY KEY` constraint specifies that the field is the primary key for the table, which means it uniquely identifies each row. The `IDENTITY(1,1)` specification creates an identity column that automatically generates a unique value for each row, starting from 1 and incrementing by 1 for each new row.