/// <summary>
/// 删除列。
/// </summary>
/// <param name="command">当前命令。</param>
/// <param name="builder">SQL语句构建实例。</param>
protected override void Generate(
DropColumnCommand command,
IndentedStringBuilder builder)
{
Check.NotNull(command, nameof(command));
Check.NotNull(builder, nameof(builder));
DropDefaultConstraint(command.Schema, command.Table, command.Name, builder);
base.Generate(command, builder);
}
/// <summary>
/// 删除列。
/// </summary>
/// <param name="command">当前命令。</param>
/// <param name="builder">SQL语句构建实例。</param>
protected virtual void Generate(DropColumnCommand command, IndentedStringBuilder builder)
{
Check.NotNull(command, nameof(command));
Check.NotNull(builder, nameof(builder));
builder
.Append("ALTER TABLE ")
.Append(Sql.DelimitIdentifier(Prefix(command.Table), command.Schema))
.Append(" DROP COLUMN ")
.Append(Sql.DelimitIdentifier(command.Name));
}
