Database Journal @DatabaseJournal
Daily Database News, Information and Tutorials for the Database Professional databasejournal.com Joined June 2008-
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Is COUNT(rowid) Faster Than COUNT(*)?: It is believed that count(*) expands to all columns and that count(rowid) is faster. Read on to see why the opposite might be true. dlvr.it/RWtWXN
How Many Databases Can You Name?: There is a huge number of databases available. How many could you name? Create our list and then compare to our list of well over 100 databases! dlvr.it/RWR4bV
How to Find the Estimation Cost for a Query: Discover how to estimate the cost of a query. Read on to see an example of how to extract the Estimated Cost for execution plans stored in the procedure cache. dlvr.it/RVzvYz
Understanding Views in SQL: Learn about the concept of views in SQL, and how they work. Read on to see clear examples of how to implement views. dlvr.it/RVYC6L
Introduction to Azure SQL Database Instance Pools: Learn about Azure SQL Database Instance Pools and how they they set to provide more flexibility and agility than other Platform-as-a Service SQL Server-based offerings in Azure. dlvr.it/RV6YWC
A Look at the Oracle Group-by Bug: In Oracle 12.2 and later a group-by elimination enhancement can produce wrong results. Read on to see what can be returned and how to work around it. dlvr.it/RThlD2
Creating or Altering an Objects with a Single Statement: Do you get tired of having your CREATE PROCEDURE statement failing if the stored procedure already exists? Read on to learn a better solution for avoiding this. dlvr.it/RTGxwz
Considerations for Deploying Azure SQL Database Managed Instances: Microsoft provides a number of different deployment options for its Azure SQL Database offerings. While most of them share the same characteristics, one in particular warrants special… dlvr.it/RSps26
Working with SQL Cursors: In SQL cursors serve as a pointer that enables application programming language to deal with query results one row at a time. Read on to explores the concept behind and learn how to declare cursors, open, retrieve data from… dlvr.it/RSPvBR
Connecting to a MySQL Database in .NET: Learn how to connect to a MySQL database from a .NET application. dlvr.it/RRzzPy
Adding Data to a Cloud Firestore Database: Learn how to add data to a NoSQL Cloud-based database (Firebase Firestore) from a simple web application. dlvr.it/RRhC7R
Introduction to Firebase: If you are doing a mobile or web-based app that need scalable access to a scalable, multi-user Cloud-based database that includes analytics and other features, then Firebase is worth taking a look. Read on to learn about the… dlvr.it/RRXvzM
Verifying Object Exists and Dropping Object with One Statement: Discover how to do both in one SQL Server statement: Verify that a SQL Server object exists and drop the object. dlvr.it/RR4zPw
Addressing the Drop Column Bug in Oracle 18c and 19c: The latest two versions of Oracle can throw an error when columns are set as unused and then dropped. Learn about this issue and how to address it. dlvr.it/RQdxXL
Introduction to Azure SQL Database Auto-Failover Groups: Auto-Failover Groups addresses several limitations that were in the Azure SQL Database. Read on to learn more! dlvr.it/RQBph8
How do OODBMS and ORDBMS Differ from RDBMS?: Get a high-level understanding of how object-relational and object-oriented database management systems differ from traditional relational database management systems. dlvr.it/RPml8P
The New SQL Server Approximate Count Distinct Function: With the introduction of SQL Server 2019, Microsoft introduced a new method to count distinct values that can be faster and uses less resources. Read on to learn more! dlvr.it/RPHb8V
Understanding Query Execution in Relational Database System Architecture: What happens behind the scene in a modern relational database management system when a user submits a query until the result is obtained from the database? Read on to learn more! dlvr.it/RNqqzR
Running Database Console Commands (DBCCs) on Azure SQL Database: Discover the primary characteristics of Database Console Commands (DBCCs) on Azure SQL Database and explore their role in Database-as-a-Service scenarios. dlvr.it/RNNs6N
Using Oracle EXPAND_SQL_TEXT: Database tables are not static entities and sometimes changes can wreak havoc on packages and procedures. Read on to see how Oracle's expand_sql_text can help solve such issues. dlvr.it/RMzDDZ
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