An aggregate is an array or a class (clause 9) with no user-declared constructors (12.1), no private or protected non-static data members (clause 11), no base classes (clause 10), and no virtual functions (10.3).也即，首先所有的数组都是Aggregates，然后类类型如果满足那四...
base_type在CREATE AGGREGATE的旧语法中,输入数据类型是由一个basetype参数指定而不是写在聚集名之后。这种语法只允许一个输入参数。要用这种语法定义一个零参数的聚集函数,把 basetype指定为"ANY"(不是)。 有序集聚集不能用旧语法定义。 sfunc要为每一个输入行调用的状态转移函数名。对于一个正常的 N-参数的...
CREATE AGGREGATE name ( BASETYPE = base_type, SFUNC = sfunc, STYPE = state_data_type[ , SSPACE = state_data_size ][ , FINALFUNC = ffunc ][ , FINALFUNC_EXTRA ][ , COMBINEFUNC = combinefunc ][ , SERIALFUNC = serialfunc ][ , DESERIALFUNC = deserialfunc ][ , INITCOND = ini...
AffinityType 枚举 ApplicationRole 类 ApplicationRoleCollection 类 ApplicationRoleEvents 类 ArrayListCollectionBase 类 AssemblyAlterOptions 枚举 AssemblySecurityLevel 枚举 AsymmetricKey 类 AsymmetricKeyCollection 类 AsymmetricKeyEncryptionAlgorithm 枚举 AsymmetricKeySourceType 枚举 AsyncStatus 类 AttachOptions 枚举 Audit...
name 要创建的聚集函数名(可以有模式修饰))。 input_data_type 该聚集函数要处理的输入数据类型。要创建一个零参数聚集函数,可以使用*代替输入数据类型列表。(count(*)就是这种聚集函数的一个实例。) base_type 在CREATEAGGREGATE语法中,输 来自:帮助中心 ...
{ DataItemTableFilter = "Directed Put-away and Pick" = const(true); dataitem(Warehouse_Entry; "Warehouse Entry") { DataItemLink = "Location Code" = Location.Code; SqlJoinType = InnerJoin; ... column(Sum_Qty_Base; "Qty. (Base)") { ColumnFilter = Sum_Qty_Base = filter(> 0); ...
The AGGREGATE function can apply different aggregate functions to a list or database with the option to ignore hidden rows and error values.
base_type在CREATE AGGREGATE的旧语法中,输入数据类型是由一个basetype参数指定而不是写在聚集名之后。这种语法只允许一个输入参数。要用这种语法定义一个零参数的聚集函数,把 basetype指定为"ANY"(不是)。 有序集聚集不能用旧语法定义。 sfunc要为每一个输入行调用的状态转移函数名。对于一个正常的 N-参数的...
Studies on the absorption spectra of equimolar solutions of oligo(dG)12-18 and poly(C), poly(Cm) or poly(Ce) showed that only 13%, 3% and 3% of base pairs, repectively, form complexes. Upon centrifugation of oligo(dG)12-18 with a molar excess of poly(C) of poly(Cm) in an anal...