E.g.: The data types of the returned values should be the same. In the example below, one argument is assigned a numeric value resulting in an error. SQL> select sal, case when sal < 2000 then 'category 1' 2 when sal < 3000 then 0 3 when sal < 4000 then 'category 3' 4 else...
Example 2-51 Simple CASE Expression with WHEN NULL 代码语言:javascript 复制 DECLAREgradeCHAR(1);--NULLbydefaultappraisalVARCHAR2(20);BEGINappraisal:=CASEgradeWHENNULLTHEN'No grade assigned'WHEN'A'THEN'Excellent'WHEN'B'THEN'Very Good'WHEN'C'THEN'Good'WHEN'D'THEN'Fair'WHEN'F'THEN'Poor'ELSE'No...
In this example, the result set is sorted by the column state when the country is theUSand by the column city for all other countries. B) Using CASE expression in a HAVING clause Consider the followingorder_itemsandproductstables: In the following query, we use theCASEexpression in aHAVING...
In this example, if the deptno column has a 10 in it, the SQL query will return the value accounting rather than the number 10. If the deptno is not 10, 20, 30, or 40, then the CASE statement will fall through to the ELSE clause, which will return unassigned. Note that with a s...
status 而是直接跟上 when 关键词, 不然会导致转换无效. SELECT id, case WHEN cast(`status` AS ...
Theidattribute specifies a unique identifier for this component; the id will be referenced later by other components. Theclassattribute specifies the class that implements the adapter; in this case it iscom.bea.wlevs.adapter.example.helloworld.HelloWorldAdapter. ...
When requesting the entire result set, do it sparingly and in very specific use cases. For example, when you want to approximate a file download for the contents of an entire table. But even in this case, we recommend you exercise extreme caution. If possible, paginate with larger page siz...
Example of Using the AD_DD Package Here is an example of using the AD_DD package to register a flexfield table and its columns: EXECUTE ad_dd.register_table('FND', 'CUST_FLEX_TEST', 'T', 8, 10, 90); EXECUTE ad_dd.register_column('FND', 'CUST_FLEX_TEST', 'APPLICATION_ID', ...
When you create a stream, you specify the number of partitions you need based on the throughput requirements of your application. For example, you can create a stream with 10 partitions, in which case you can achieve a throughput of 10 MB/sec input and 20 MB/sec output from a stream. ...
In this case, named parameters must be used. For example: Copy SELECT * FROM Customers WHERE CustomerID = :pCustomerID When using named parameters in an SQL statement called by an OracleCommand of CommandType.Text, you must precede the parameter name with a colon (:). However, in a ...