SQL Query: SELECT STATE, DECODE(STATE, 'HI', 'Remote US state', 'AK', 'Continental US state', 'Contiguous US state') LOCATION FROM CUSTOMER; Analysis of the Query: The DECODE function is used to map state abb
Question: Is it possible to use the NVL function with more than one column with the same function call? To be clear, if i need to apply this NVL function to more than one column like this: NVL(column1;column2 ... , here is the default value for all ) Answer: You will need to ...
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sql中nvl函数用法 English Answer：The NVL function in SQL stands for "NVL," which means "Null Value Library." It is a function that allows you to replace NULL values with a default value. This can be useful in situations where you want to avoid errors or to ensure that your data is ...
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sql报错Function nvl not registered sql error code 故障现象描述: 执行SQL 语句时,出现类似如下错误消息。 指令SQL:insert into t_stat_file_temp SQLSTATE:57011,供应商错误代码:-964 DB2 SQL 错误:SQLCODE:-964,SQLSTATE:57011, SQLERRMC:空 故障原因说明:...
如果FavoriteColors为NULL,则以下动态SQL示例返回字符串“No Preference”;否则,它返回FavoriteColors的值: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 /// d ##class(PHA.TEST.SQLFunction).Nvl()ClassMethodNvl(){s myquery=3smyquery(1)="SELECT Name,"smyquery(2)="NVL(FavoriteColors,'No Prefer...
SQL FunctionComparisonTest Return Value 示例 以下示例返回替换表达式 (99),因为检查表达式为NULL: SELECT NVL(NULL,99) AS NullTest 99 以下示例返回检查表达式 (33),因为检查表达式不为NULL: SELECT NVL(33,99) AS NullTest 33 如果FavoriteColors为NULL,则以下动态SQL示例返回字符串“No Preference”;否则,它...
sql中nvl的用法sql 中 nvl 的用法 *NVL()函数是 oracle中内置的函数,全称为“Null Value Function”。它的作 用是把 null 值转换成合法的值,以避免空值对逻辑操作产生的异常。 1、 NVL()函数的原理 NVL()函数可以将数据库表中的空值用自定义的值代替,以免空值对结果造成 影响。 2、 NVL()函数语法 NVL(...
NVL(e1, e2)Code language:SQL (Structured Query Language)(sql) TheNVL()function accepts two arguments. Ife1evaluates to null, thenNVL()function returnse2. Ife1evaluates to non-null, theNVL()function returnse1. The two argumentse1ande2can have the same or differentdata types. If their data...