using Microsoft.EntityFrameworkCore.Migrations; #nullable disable namespace IM_API.Migrations { /// public partial class updategroupannouncement : Migration { /// protected override void Up(MigrationBuilder migrationBuilder) { migrationBuilder.UpdateData( table: "groups", keyColumn: "Announcement", keyValue: null, column: "Announcement", value: ""); migrationBuilder.AlterColumn( name: "Announcement", table: "groups", type: "text", nullable: false, comment: "群公告", collation: "utf8mb4_general_ci", oldClrType: typeof(string), oldType: "text", oldNullable: true, oldComment: "群公告") .Annotation("MySql:CharSet", "utf8mb4") .OldAnnotation("MySql:CharSet", "utf8mb4") .OldAnnotation("Relational:Collation", "utf8mb4_general_ci"); } /// protected override void Down(MigrationBuilder migrationBuilder) { migrationBuilder.AlterColumn( name: "Announcement", table: "groups", type: "text", nullable: true, comment: "群公告", collation: "utf8mb4_general_ci", oldClrType: typeof(string), oldType: "text", oldComment: "群公告") .Annotation("MySql:CharSet", "utf8mb4") .OldAnnotation("MySql:CharSet", "utf8mb4") .OldAnnotation("Relational:Collation", "utf8mb4_general_ci"); } } }