oraclenvl且不在spark sql中的函数中 、、 我正在尝试在spark 1.5.0中实现下面的oracle逻辑,我有如下select查询selectname, id, age, country, CASE WHEN (id is notnull ANDNVL(country,'DUMMY') NOT IN (us,'DUMMY') )ELSE wrong END Code(one of the column我想在spark中实现cas 浏览1提问于2017-01-...
DECODE函数的作用:它可以将输入数值与函数中的参数列表相比较,根据输入值返回一个对应值。函数的参数列表是由若干数值及其对应结果值组成的若干序偶形式。当然,如果未能与任何一个实参序偶匹配成功,则函数也有默认的返回值。 区别于SQL的其它函数,DECODE函数还能识别和操作空值。 语法如下: DECODE(control_value,value1,...
NVLlets you replace null (returned as a blank) with a string in the results of a query. Ifexpr1is null, thenNVLreturnsexpr2. Ifexpr1is not null, thenNVLreturnsexpr1. The argumentsexpr1andexpr2can have any data type. If their data types are different, then Oracle Database implicitly ...
I'm still using CF8 and Oracle 11G back-end. When I use NVL in the query of query I got error...Can't I use NVL to check on null value? Please help Here is my codes: <cfquery name="GetC2" datasource="#Trim(application.OracDSN)#"> SELECT...
ISNULL exists in SQL Server and MySQL, where NVL is only in Oracle. NVL2 (Oracle) The NVL2 function is similar to the NVL function. NVL2 allows you to specify a value to check, and then specify a value to use if it is null, as well as a value to use if it is not null. ...
oracle nvl,nvl2,coalesce几个函数的区别 1.nvl(exp1,exp2) NVLlets you replace null (returned as a blank) with a string in the results of a query. Ifexpr1is null, thenNVLreturnsexpr2. Ifexpr1is not null, thenNVLreturnsexpr1. 该函数是处理表达式中的空值:假设表达式exp1是空值,则该函数...
obclient> CREATE TABLE tbl1 (col1 INT,col2 INT); Query OK, 0 rows affected obclient> INSERT INTO tbl1 VALUES (1,30),(2,null),(3,50),(4,80),(5,10); Query OK, 5 rows affected Records: 5 Duplicates: 0 Warnings: 0 obclient> SELECT col1,NVL(col2,100) FROM tbl1; +---+...
The first one is a field name or expression and the second one is a value which will replace the null value. So when a statement having this query is executed in Oracle. The function immediately checks the values of the field or expression in all the rows returned by the select statement...
Lesson 9 DECODE and NVL functions Objective Modify query results using the DECODE and NVL functionsDECODE Function in OracleQuestion: What is the purpose of the DECODE Function in Oracle? The DECODE function in Oracle is a versatile and powerful tool that allows users to perform conditional ...
Oracle Database Gateway for DRDA - Version 11.2.0.1 and laterInformation in this document applies to any platform.SymptomsThe Oracle Gateway for DRDA (DG4DRDA) 11.2 has been configured to connect to a DB2/400 database. All supported SQL functions work with the exception of the NVL function. ...