如果输入的json字符串无效,那么返回NULL。 17.内置聚合函数 count、sum、avg、min、max 18.left semi join ... on ...--只打印左边的表中的列,规律是如果主键在右边表中存在,则打印,否则过滤掉 --相当于sql的in --不会产生重复的多条记录 19.collect_set --与group by组合能列转行,相当于group_concat ...
Row(1, Date.valueOf("2012-12-12"), Timestamp.valueOf("2016-09-30 03:03:00")), Row(2, Date.valueOf("2016-12-14"), Timestamp.valueOf("2016-12-14 03:03:00"))) val df = spark.createDataFrame(spark.sparkContext.parallelize(data),schema) 1. 2. 3. 4. 5. 6. 7. 8. 9. ...
(asyncResult) { if (asyncResult.status == Office.AsyncResultStatus.Succeeded) { _projectUid = asyncResult.value.fieldValue; } else { throwError(asyncResult.error.name, asyncResult.error.message); } } ); } // Get the path of the project in Project web app, which is in the form <>\...
(asyncResult) { if (asyncResult.status == Office.AsyncResultStatus.Succeeded) { _projectUid = asyncResult.value.fieldValue; } else { throwError(asyncResult.error.name, asyncResult.error.message); } } ); } // Get the path of the project in Project web app, which is in the form <>\...
Dim xlsheet As Excel.Worksheet '定义Excel工作表 Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As Microsoft.Office.Tools.Ribbon.RibbonControlEventArgs) Handles Button1.Click xlapp = Globals.ThisAddIn.Application '获取add in 当前表 ...
SQL Server SQL Server Reporting Services, Power View Index .5in is not a valid unit designator. Valid unit designators are in, mm, cm, pt, pc. 'No such host is known' error when configuring Reporting database 'Oracle' data extension not registered 'Return' statement in a Function,Get,or...
The add-in project takes the name of the solution. It includes the add-in only manifest file for the add-in and targets the .NET Framework 4.5. Procedure 3 shows the steps to modify the manifest for the HelloProjectOData add-in. The web project is named HelloP...
Dim arr(), arrType() 'Usf_Interm 中组合框数据源 Dim preDate As Date Dim preColor Dim preNumber As Integer Dim intRow As Integer 'selecteditems的行号 'Dim AccCode As String, AccName As String Dim CheckBoxStatus As Boolean Dim strDeletedId As String ...
SQL> alter sessionsetddl_lock_timeout=0;2.使用online参数 session1 SQL> delete d1whererownum=1;1row deleted. session2 SQL>create index c_id on d1(object_id) online; session3 SQL> delete d1whereobject_id>9000;63382rows deleted. --可以发现使用online创建索引,但是在索引创建session并未结束时...
For example, the .NET Framework implementation of theContainsmethod returns all rows when you pass an empty string to it, but the Entity Framework provider for SQL Server Compact 4.0 returns zero rows for empty strings. Therefore ...