Getting good at SQL for interviews can feel like a puzzle. You know the basics, but putting them together in a way that impresses people is another thing entirely. Luckily, there are great tools out ...

Unlock the full InfoQ experience by logging in! Stay updated with your favorite authors and topics, engage with content, and download exclusive resources. This article dives into the happens-before ...

Have you ever found yourself frustrated by Excel’s inability to handle ties in rankings without creating gaps in the sequence? Imagine analyzing employee salaries or sales performance, only to ...

1 Graduate School of Frontier Sciences, The University of Tokyo, Chiba, Japan 2 Graduate School of Engineering, The University of Tokyo, Tokyo, Japan Neural oscillation, particularly gamma oscillation ...

Have you ever stared at a beautifully organized table in Excel—rows and columns perfectly aligned—only to realize it’s a nightmare for analysis? Cross-tab layouts, while visually appealing, can feel ...

What is the new “blue tragedy” unfolding at the abandoned hot spring? The once-popular hot spring inn known for its “beauty-enhancing hot spring” is now a ruin. There was a rumor that it was haunted.

SELECT map_subset(c0, c1) FROM ( VALUES ( MAP(ARRAY[ARRAY[1, 2]], ARRAY[1]), ARRAY[ARRAY[1, NULL], ARRAY[2, NULL]] ) ) t(c0, c1); returns "ARRAY comparison not ...

There are many SQL dialects. They are similar, but not same and not compatible. Hence, it is not sufficient to say SQL. One must clarify the specific SQL dialect being used. ToSQLUtil.* contains ...

Senior employees at the Department of Health and Human Services, including the Centers for Disease Control and Prevention, have been asked to rank probationary employees based on how critical they are ...

Databases are essential for storing and retrieving structured data supporting business intelligence, research, and enterprise applications. Querying databases typically requires SQL, which varies ...