#scala

ORA-26088: scalar column “string” must be specified prior to LOB columns

文档解释ORA-26088:scalarcolumn“string”mustbespecifiedpriortoLOBcolumnsCause:Allscalarcolumns(i.e.non-LOBandnon-LONGcolumns)mustbe*specifiedbytheclientof...

ORA-19017: Attributes can only be simple scalars

文档解释ORA-19017:AttributescanonlybesimplescalarsCause:AttributevaluescanonlybesimplescalarvaluesAction:UseonlysimpledatatypesforattributevaluesORA-19017:Attribute...

ORA-39251: Importing a SecureFile LOB with metadata into a scalar, column string, is not allowed.

文档解释ORA-39251:ImportingaSecureFileLOBwithmetadataintoascalar,columnstring,isnotallowed.Cause:AnimportofaSecureFileLOBwithmetadataintoascalarcolumnwasattempted.A...

ORA-41612: scalar values expected for action preferences

文档解释ORA-41612:scalarvaluesexpectedforactionpreferencesCause:Incorrectvalueswerespecifiedfortheactionpreferences.Action:Correcttheactionpreferencesvaluesandtryag...

ORA-22610: error while adding a scalar to the image handle

文档解释ORA-22610:errorwhileaddingascalartotheimagehandleCause:ErrorwhileaddingascalarattributetotheimagehandleAction:Makesureimagehandleisinitializedbeforeaddingsc...

ORA-24318: call not allowed for scalar data types

文档解释ORA-24318:callnotallowedforscalardatatypesCause:Thiscallisvalidonlyforobjecttypes.Action:Verifythatthedata-typeforthisvariableisanobjecttypeORA-24318:callno...

ORA-19207: scalar parameter string of XMLELEMENT cannot have an alias.

文档解释ORA-19207:scalarparameterstringofXMLELEMENTcannothaveanalias.Cause:ThescalarparametertoXMLELEMENThasbeenqualifiedwithanalias.Action:RemovetheASclauseofthesc...

ORA-22613: buflen does not match the size of the scalar

文档解释ORA-22613:buflendoesnotmatchthesizeofthescalarCause:buflenisincorrectAction:Makesurebufleniscorrectandmatchesthesizeofthescalar...

Python错误 ValueError: If using all scalar values, you must pass an index.

在使用pandas,使用json(dict)数据类型创建DataFrame时错误 ValueError:Ifusingallscalarvalues,youmustpassanindex。这是因为pandas的DataFrame方法需要传入一个可迭代的对象(列表,元组,字典等),或者给DataFrame指定i...

Scala核心编程_第14章_函数式编程高级

偏函数介绍Scala的函数是基于Function家族,0-22,一共23个FunctionTrait可以被使用,数字代表了Funtcion的入参个数。偏函数:f:X->Y,该函数仅定义了输入参数X的子集1和3,没有包含2。在Scala中的偏函数是通过特质PartialFunction[-A,+B]来定义的,查看P...

Scala核心编程_第11章_2节 数据结构-数组列表元祖

数组Array是定长数组,ArrayBuffer是变长数组创建数组定长数组1.new方式定义数组中括号的类型就是数组的类型,valarr1=newArray[Int](10)赋值,集合元素采用小括号访问arr1(1)=7反编译    2.apply方式定义数组valarr1=Ar...

Scala核心编程_第13章 模式匹配

基本介绍Scala中的模式匹配类似于Java中的switch语法,但是更加强大。模式匹配语法中,采用match关键字声明,每个分支采用case关键字进行声明,当需要匹配时,会从第一个case分支开始,如果匹配成功,那么执行对应的逻辑代码,如果匹配不成功,继续执行下一个分支进行判断。如果所有case都不匹配,那么会执行c...
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