With the searched CASE expression, we can have multiple WHEN conditions: SELECT [BusinessEntityID],[JobTitle],[HireDate],Seniority=CASE WHENDATEDIFF(YEAR,[HireDate],GETDATE())>10 THEN'Longer than 10 years'WHENDATEDIFF(YEAR,[HireDate],GETDATE())=10 THEN'Exactly 10 years'WHENDATEDIFF(YEAR,[...
PL/SQL Multiple-Choice Questions (MCQs)PL/SQL stands for "Procedural Language Extension of SQL". PL/SQL uses a block-structured syntax. Each of the logical blocks of PL/SQL can be nested into any number of subblocks.This section contains the PL/SQL MCQs on various topics such as ...
Evaluates a list of conditions and returns one of multiple possible result expressions. TheCASEexpression has two formats: The simpleCASEexpression compares an expression to a set of simple expressions to determine the result. The searchedCASEexpression evaluates a set of Boolean expressions to determin...
AI代码解释 RESPONSE:To modify the query according to the discussed plan,we will first create a listofall VMs and assign an initial statusof‘alarm’ to each.Then we’ll check against the conditions that would indicate aVMis notvulnerable(i.e.,‘innocent’).If aVMdoes not meet these conditi...
Asubqueryis a nested SELECT statement. Subqueries let you conduct multi-part searches. They can be used to supply values for comparison in the WHERE, HAVING, and START WITH clauses of SELECT, UPDATE, and DELETE statements define the set of rows to be inserted by a CREATE TABLE or INSERT ...
Table functions are functions that can produce a set of rows as output. In other words, table functions return a collection type instance (nested table and VARRAY datatypes). You can use a table function in place of a regular table in the FROM clause of a SQL statement....
User-defined functions can be nested; that is, one user-defined function can call another. The nesting level is incremented when the called function starts execution, and decremented when the called function finishes execution. User-defined functions can be nested up to 32 levels. Exceeding the ...
“when_expression” is always the equality operator. Whereas with the searched CASE expression each WHEN clause will contain a “Boolean_expression”. This “Boolean_expression” can be a simple Boolean expression with a single operator, or a complex Boolean expression with many different conditions...
'DISABLE_OPTIMIZED_NESTED_LOOP' Instructs the query processor not to use a sort operation (batch sort) for optimized nested loop joins when generating a query plan. This hint name is equivalent to Trace Flag 2340. This hint a...
7117 Mitigates an assertion failure that you might encounter when you have multiple nested inserts. This trace flag enables the persistent version store (PVS) cleaner thread to proceed, if the PVS bit is set for a row that might have been part of an aborted transaction. This trace flag allow...