SELECT CASE AS用法举例 To group and perform statistics on SQLite rows based on whether a specific column value is in a list or not, you can use theCASEstatement within theSELECTstatement. Here's an example: Let's assume you have a table called "employees" with columns "employee_id," "e...
If the code within aCaseorCase Elsestatement block does not need to run any more of the statements in the block, it can exit the block by using theExit Selectstatement. This transfers control immediately to the statement followingEnd Select. ...
Case"everything","nuts"To"soup", TestItem Select Casestatements can be nested. Each nestedSelect Casestatement must have a matchingEnd Selectstatement. Example This example uses theSelect Casestatement to evaluate the value of a variable. The secondCaseclause contains the value of the variable be...
Access Code - DELETE Statement with DISTINCTROW and T-SQL Access Now() vs. T-SQL GETDATE() ? ADD and SUBTRACT depending on the condition is CASE STATEMENT ADD COLUMN to variable table? Add prefix in data column Add Time in SQL HH:MM:SS to another HH:MM:SS Adding a column to a lar...
BYclause and before anyORDER BYclause. TheINTOclause, if present, can appear in any position indicated by the syntax description, but within a given statement can appear only once, not in multiple positions. For more information aboutINTO, seeSection 13.2.9.1, “SELECT ... INTO Statement”....
lock_owner_type data NULL c--m Cursor 2 sqlserver lock_deadlock event o--c resource_type lock_resource_type data NULL c--m PAGE 6 Therefore, on your CREATE EVENT SESSION statement, in its ADD EVENT WHERE clause, you could put: WHERE( ... resource_ty...
SelectStatementSyntax Update (Microsoft.CodeAnalysis.SyntaxToken selectKeyword, Microsoft.CodeAnalysis.SyntaxToken caseKeyword, Microsoft.CodeAnalysis.VisualBasic.Syntax.ExpressionSyntax expression); 參數 selectKeyword SyntaxToken SelectKeyword 屬性的值。 caseKeyword SyntaxToken CaseKeyword 屬性的值。 expr...
AddSensitivityClassificationStatement AddSignatureStatement AdHocDataSource AdHocTableReference AffinityKind AlgorithmKeyOption AllowConnectionsOptionKind AlterAction AlterApplicationRoleStatement AlterAssemblyStatement AlterAsymmetricKeyStatement AlterAuthorizationStatement AlterAvailabilityGroupA...
A SELECT statement can start with a WITH clause to define common table expressions accessible within the SELECT. See Section 15.2.20, “WITH (Common Table Expressions)”. The most commonly used clauses of SELECT statements are these:
CASE Statement: The CASE statement directly introduces conditional logic (if-else) into SELECT statements, allowing different values to be returned based on evaluated conditions. IIF Function: The IIF function is a concise way to implement if-else logic directly within a SELECT statement, evaluating...