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Tag: mysql

sort the “rollup” in group by

I found that the “with rollup” option used with group by is very useful. But it does not behave with “order by” clause. Is there any way to order by the way I want as well as calculate the sub-totals? …

Can MySQL replace multiple characters?

I’m trying to replace a bunch of characters in a MySQL field. I know the REPLACE function but that only replaces one string at a time. I can’t see any appropriate functions in the manual. Can I replace or delete multiple strings at once? For example I need to replace spaces with dashes and remove other punctuation. Answer You can

MySQL: select the closest match?

I want to show the closest related item for a product. So say I am showing a product and the style number is SG-sfs35s. Is there a way to select whatever product’s style number is closest to that? …

Combining OUTER JOIN and WHERE

I’m trying to fetch some data from a database. I want to select an employee, and if available, all appointments and other data related to that employee. This is the query: SELECT, TEI….

Combining UNION and LIMIT operations in MySQL query

I have a Jobs and a Companies table, and I want to extract 20 jobs that meet the following criteria: Jobs only from two (2) named companies There can at most be 10 jobs per company I have tried the following SELECT with UNION DISTINCT, but the problem is that the LIMIT 0,10 applies to the whole result set. I