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In this guide, I’ll start with a discussion of SQL tuning and the basics of why it’s important; then I’ll set out six best practices for query tuning in Oracle, and how to make SELECT query faster in Oracle. This includes usingSolarWinds®Database Performance Analyzer (DPA)or a s...
In this method, you can convert your Oracle data to a CSV file using SQL plus and then transform it according to the compatibility. You then can stage the files in S3 and ultimately load them into Snowflake using the COPY command. This method can be time taking and can lead to data in...
Note: As of July 2023, both the Virtual Machine method and a Docker container do not work on the M1 or M2 Mac computers. The best way that I’ve found is to set up an Oracle Cloud Free Tier database and connect to it from your local SQL Developer application. I’ve described how ...
Introduction to Oracle EXISTS EXISTS is a type of condition in Oracle database which can be defined as a condition or operator that is used with a sub query ( inner query or nested query is a query within another SQL query ) and upon execution of the sub query, if the sub query return...
Describes and lists keywords and query words that you can use to search Microsoft Knowledge Base articles.
SQL, which stands forStructured Query Language, is a programming language that’s used to retrieve, update, delete, and otherwise manipulate data in relational databases. MySQL is officially pronounced “My ess-cue-el,” but “my sequel” is a common variation. As the name suggests, MySQL is...
I am trying to format a data in a datagridview to two to three decimal places but it seems not to work. The data is sent to datatable from multiple arrays of data. The datatable is finally bound to the datasource of the datagridview. Below is sample code I used prettyprint 複製 ...
JavaScript Object Notation (JSON) is a lightweight data transfer format. It's the de facto standard for document exchange. So it's likely you'll want to send and receive JSON documents from and to your database. And store them in your tables. Oracle Dat
Often you receive a CSV string that you need to convert to rows. To do this with SQL you need to: Generate a row for each value For each row N, extract the value at position N from the string You can do this in Oracle Database with a query like: ...