使用B表去Leftjoin A表后进行Select 操作,此时会出现 结果转换成JSON 对象时候出错。 堆栈信息: at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.EnsureType(JsonReader reader, Object value, CultureInfo culture, JsonContract contract, Type targetType) ...
select * from user where 1=1 <if test="userName != null"> and username = #{userName} </if> <if test="userSex != null"> and sex = #{userSex} </if> 1. 2. 3. 4. 5. 6. 7. 8. 9. 使用where标签直接连接条件,不用加1=1 select * from user <where> <if test="userNa...
SELECT b.*,bo.* FROM boys bo LEFT OUTER JOIN beauty b ON b.`boyfriend_id` = bo.`id` WHERE b.`id` IS NULL; 1. 2. 3. 4. 5. #案例1:查询哪个部门没有员工 #左外 SELECT d.*,e.employee_id FROM departments d LEFT OUTER JOIN employees e ON d.`department_id` = e.`department_...
INNER JOIN systypes ON syscolumns.xtype = systypes.xtype LEFT JOIN sysobjects ON syscolumns.id = sysobjects.id LEFT OUTER JOIN sys.extended_properties ON (sys.extended_properties.minor_id = syscolumns.colid AND sys.extended_properties.major_id = syscolumns.id) LEFT OUTER JOIN syscomments ON sysc...
.LeftJoin<SysUnitDTO>((pd, fd, ud) => pd.unit == ud.id) .Where((pd, fd, ud) => pd.status == 1); var nonpackage = project .Clone() .Where((pd, fd, ud) => pd.data_type == 0)//非套餐 .Select((pd, fd, ud) => new SysProjectDTO() { projectPrices = SqlFunc.Subq...
Check.ArgumentNullException(sqlable.Sql, "语法错误,正确用法:sqlable.Form(“table”).Join"); sqlable.Sql.AppendFormat(" {0} JOIN {1} {5} {2} ON {3} = {4} ", type.ToString(), tableName, GetIsNoLock(sqlable.IsNoLock), leftFiled, RightFiled, shortName); sqlable.Sql.AppendFormat(...
returnstring.Join(UtilConstants.Dot,entityName.Split(UtilConstants.DotChar).Select(it=>GetTranslationText(it))); } else { returnGetTranslationText(entityName); } } publicvirtualstringGetTranslationColumnName(stringcolumnName) { Check.ArgumentNullException(columnName,stri...
( CASE WHEN HuoDongExp2 is null THEN cast(HuoDongExp1 as int) ELSE cast(HuoDongExp2 as int) * 50 + cast(HuoDongExp1 as int) END ) zongsu from HD_HuoDongInfo as t with(nolock) left join WeiXinUserInfo wx on t.WeiXinUnionID=wx.UnionID where t.[HuoDongId] = 51 and t.State = ...
Check.Exception(PrimaryKeys==null|| PrimaryKeys.Count ==0,"Update List<T> need Primary key"); StringBuilder batchUpdateSql=newStringBuilder(); StringBuilder updateTable=newStringBuilder();stringselectString =string.Join(",", groupList.First().Select( ...
return SqlTranslationLeft + name.ToLower(isAutoToLower) + SqlTranslationRight; } public bool isAutoToLower { get { return base.PgSqlIsAutoToLower; } } public override string GetTranslationTableName(string entityName, bool isMapping = true) { Check.ArgumentNullException(entityName, string.Format...