FreeSql (seven) ignore column when inserting data

var connstr = "Data Source=127.0.0.1;Port=3306;User ID=root;Password=root;" + 
    "Initial Catalog=cccddd;Charset=utf8;SslMode=none;Max pool size=10";

IFreeSql fsql = new FreeSql.FreeSqlBuilder()
    .UseConnectionString(FreeSql.DataType.MySql, connstr)
    .UseAutoSyncStructure(true) //自动同步实体结构到数据库
    .Build();

[Table(Name = "tb_topic")]
class Topic {
    [Column(IsIdentity = true, IsPrimary = true)]
    public int Id { get; set; }
    public int Clicks { get; set; }
    public string Title { get; set; }
    public DateTime CreateTime { get; set; }
}

var items = new List<Topic>();
for (var a = 0; a < 10; a++) items.Add(new Topic { Id = a + 1, Title = $"newtitle{a}", Clicks = a * 100 });

Ignore column

fsql.Insert<Topic>(items).IgnoreColumns(a => a.CreateTime).ExecuteAffrows();

Execute SQL as follows:

INSERT INTO `tb_topic`(`Clicks`, `Title`) VALUES(?Clicks0, ?Title0), (?Clicks1, ?Title1), (?Clicks2, ?Title2), (?Clicks3, ?Title3), (?Clicks4, ?Title4), (?Clicks5, ?Title5), (?Clicks6, ?Title6), (?Clicks7, ?Title7), (?Clicks8, ?Title8), (?Clicks9, ?Title9)

fsql.Insert<Topic>(items).IgnoreColumns(a => new { a.Title, a.CreateTime }).ExecuteAffrows();

Execute SQL as follows:

INSERT INTO `tb_topic`(`Clicks`) VALUES(?Clicks0), (?Clicks1), (?Clicks2), (?Clicks3), (?Clicks4), (?Clicks5), (?Clicks6), (?Clicks7), (?Clicks8), (?Clicks9)

API

method	return value	parameter	description
AppendData	<this>	T1 | IEnumerable	Additional entities intended for insertion
InsertIdentity	<this>	no	Specify the insertion auto-increment
InsertColumns	<this>	Lambda	Just insert columns
IgnoreColumns	<this>	Lambda	Ignore column
WithTransaction	<this>	DbTransaction	Set transaction object
ToSql	string		Returns the SQL statement to be executed
ExecuteAffrows	long		The number of rows to execute SQL statements, the impact of return
ExecuteIdentity	long		Execute SQL statement that returns from value-added
ExecuteInserted	List<T1>		Execute SQL statements, after the insertion of records returned