MDX is a SQL-like language you can use to issue queries that retrieve data fromEssbase. MDX is also used to define formulas on ASO cubes, query metadata, qualify member names, and delineate subsets of data or metadata. The best way to learn MDX is to write queries. This section helps y...
address. dns queries are essential for resolving domain names and accessing websites on the internet. how does a dns query work? when you type a domain name into your web browser, your computer sends a dns query to a dns server. the dns server checks its records to find the corresponding...
How to know list of users who queried the db and what were the queries they fired? How to know the data size of my select query how to know the database name if i know the table name how to know the last row of a cursor how to know the size of a view How to load data from...
Cache-aside is a very powerful technique and allows you to issue complex database queries involving joins and nested queries and manipulate data any way you want. Despite that, Read-through / Write-through has various advantages over cache-aside as mentioned below:...
A second option is to use the query option like this:df = spark.read.format("bigquery").option("query", sql).load() Notice that the execution should be faster as only the result is transmitted over the wire. In a similar fashion the queries can include JOINs more efficiently then ...
Many use EF and it is perfect, I also used it in a large project and at first everything was ok. But as it grew and we began to need to optimize the queries and see what it was doing underneath, it started to get complicated. ...
You can also enable this with Spark config on the cluster which will apply to all streaming queries: spark.databricks.delta.withEventTimeOrder.enabled true Delta table as a sink You can also write data into a Delta table using Structured Streaming. The transaction log enables Delta Lake to guar...
Enter ChatGPT by OpenAI, an LLM (large language model) AI model with the capability to assist in writing SQL queries, among many other tasks. Through our recent exploration, we delved deep into how LLMs could revolutionize the SQL writing process. ...
You can also enable this with Spark config on the cluster which will apply to all streaming queries:spark.databricks.delta.withEventTimeOrder.enabled true Delta table as a sink You can also write data into a Delta table using Structured Streaming. The transaction log enables Delta Lake to guaran...
Next, by analyzing the process of how a Flink SQL becomes a Flink job, we introduce how the job is optimized. After the Flink engine receives an SQL text, it parses it into a SqlNode using SqlParser. The Flink engine queries the metadata information in the catalog to verify the tables...