A private preview of SQL Server 2025 began in November 2024, followed by a public preview in May 2025. Now, it is time for the natural next step, as the tool has received its first release candidate, ...

Introducing a new cloud billing option for SQL Server customers, providing pay-as-you-go flexibility across on-premises and cloud environments. License by vCore [4]New Allows customers to elect to ...

Oracleで構築された既存システムのデータベースを、SQL Server（SSMS）へ移行するプロジェクト。 要件はシンプルでした： 「前と同じように動けばいい」 「DB構造も極力そのままで」 Oracle側ではVARCHAR2が多用されていたため、Oracleでの定義に合わせ、SQL Serverで ...

At Microsoft Build, SQL Server 2025 enters public preview with major enhancements in AI integration, performance, reliability and developer tools -- reaffirming Microsoft’s continued investment in its ...

一意性（UNIQUE） → 同じ値を持つレコードは存在できない NOT NULL 制約付き → NULL 値は許可されない 複数カラムを主キーにする(複合主キー) CREATE TABLE EmployeeProjects ( EmployeeID INT, ProjectID INT, Role NVARCHAR(50), PRIMARY KEY (EmployeeID, ProjectID)- ...

Splitting a string by a delimiter in SQL Server involves breaking a single text string into smaller parts based on a chosen character. This is often done using functions like STRING_SPLIT, which ...

SQL Server Management Studio or SSMS allows you to connect to the SQL server and execute queries. In this tutorial, we will see how you can install and configure SQL Server Management Studio in ...

SQL Server's OpenJson function will let you dismantle JSON structures into relational tables, including tables with foreign/primary key relationships. As I noted in an earlier column, JSON is great ...

With the first public preview of SQL Server 2019, we announced support for the widely used UTF-8 character encoding as an import or export encoding, and as database-level or column-level collation for ...