Question: What is an SQL NULL? NULL is a special value in SQL that represents a missing or an unknown value. NULL is used for fields with unknown or inapplicable values. It's different from an empty or zero value. No two NULL values are equal. ...
Learn about new features for SQL Server 2022 (16.x), which gives you choices of development languages, data types, environments, and operating systems.
ISNULL() function is used to check the value is null or not in SQL Server. This function also provides a way to replace a value with the null if the result is true. Here @Param is a nullable parameter and isnull checks the parameter is a null value or not. If it is a null, ...
INSERT INTO #TESTTABLE (VALID_FROM, VALID_TILL) VALUES (GETDATE(), GETDATE()) INSERT INTO #TESTTABLE (VALID_FROM, VALID_TILL) VALUES (GETDATE(), NULL) SELECT * FROM #TESTTABLE WHERE ISNULL(VALID_TILL, GETDATE()) = CAST(GETDATE() AS DATE) SELECT * FROM #TESTTABLE WHERE VALID_T...
Beginning with MySQL 8.4.0, the deprecated mysql_native_password authentication plugin is no longer enabled by default. To enable it, start the server with --mysql-native-password=ON (added in MySQL 8.4.0), or by including mysql_native_password=ON in the [mysqld] section of your MySQL co...
This is the final post in a series covering changes in SSMS 19. Please review Part 1 and Part 2 for details about Microsoft.Data.Sqlclient, MSAL, removal of the SQL Vulnerability Assessment, and mor... Erin, I see your point, although 19 and 20 do seem to be closer together than pre...
As part of the schema synchronization procedure performed when starting, an SQL node now compares all databases on the cluster's data nodes with those in its own data dictionary, and if any of these is found to be missing from the SQL node's data dictionary, the SQL Node installs it loc...
The logic for change data capture process is embedded in the stored proceduresp_replcmds, an internal server function built as part of sqlservr.exe and also used by transactional replication to harvest changes from the transaction log. In SQL Server and Azure SQL Managed Instance, when ...
What Is a JSON Document Database? JSON’s popularity among developers has spawned a number of highly capable databases that are dedicated to the data format, including bothSQLandNoSQLdatabases. NoSQL document databases store data directly in JSON format without requiring additional processing. Popular...
What Is a JSON Document Database? JSON’s popularity among developers has spawned a number of highly capable databases that are dedicated to the data format, including bothSQLandNoSQLdatabases. NoSQL document databases store data directly in JSON format without requiring additional processing. Popular...