增加数据表结构查询的方法

system.go

@@ -93,3 +93,47 @@ func (sd *SystemDao) GetCreateTableSQL(dbInstance *gorm.DB, table string) (strin
 	}
 	return fmt.Sprintf("%v", result["Create Table"]), nil
 }
+
+// GetTableDesc 获取数据表的描述
+//
+// Author : go_developer@163.com<白茶清欢>
+//
+// Date : 22:37 2023/8/16
+func (sd *SystemDao) GetTableDesc(dbInstance *gorm.DB, database string, tableName string) ([]*DescTableItem, error) {
+	var (
+		err    error
+		result []*DescTableItem
+	)
+
+	if err = dbInstance.Raw("DESC `" + tableName + "`").Scan(&result).Error; nil != err {
+		return nil, err
+	}
+	// 查询comment信息
+	tableInfo, _ := sd.GetTableInfo(dbInstance, database, tableName)
+	tableInfoTable := make(map[string]string)
+	for _, item := range tableInfo {
+		tableInfoTable[item.ColumnName] = item.ColumnComment
+	}
+	for _, item := range result {
+		item.Comment = tableInfoTable[item.Field]
+	}
+	return result, nil
+}
+
+// GetTableInfo 查询别熬结构
+//
+// Author : go_developer@163.com<白茶清欢>
+//
+// Date : 23:10 2023/8/16
+func (sd *SystemDao) GetTableInfo(dbInstance *gorm.DB, database string, tableName string) ([]*ColumnInfo, error) {
+	var (
+		list []*ColumnInfo
+		err  error
+	)
+
+	err = dbInstance.Table("INFORMATION_SCHEMA.COLUMNS").Where(map[string]string{
+		"TABLE_SCHEMA": database,
+		"TABLE_NAME":   tableName,
+	}).Scan(&list).Error
+	return list, err
+}