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| Sorting By Count(*) |
The other day, I was working on a fairly database-centric project, when I came across a problem I had never come across before. It seemed like such a simple task that I could not fathom why I could not write the query to get what I wanted. What I needed to do was to choose only the entries in a table which appeared a certain number of times.
My first instinct told me to do something like this.
SELECT COUNT(*), name FROM tableA GROUP BY name WHERE COUNT(*) > 10;
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| How To Dupe Duplicate Rows In Three Easy... |
| Repetitive information goes against good database design, and thus is reason enough to find and remove duplicate values. However, when utilizing an UNIQUE key or other types of indexes, duplications actually break or prevent statements from...
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| Cooking With SQL: Short And Sweet |
| One of my fondest childhood memories revolves around my Grandmother's cooking. She was able to take out store bought hot dogs, boil them in a pot of water, and serve them up on piece of bread for many of my childhood lunches. Likewise, one my...
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| A Uniform Query To The Community |
| The language of SQL is a lot like the English language. You have North American and Great Britain dialects of the language, not to mention significantly varying degrees of those dialects broken down amongst the geographical regions in which they're...
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