| bio | website | phpfreaks.com |
|---|---|---|
| location | United States (but travelling) | |
| age | 34 | |
| visits | member for | 1 year, 8 months |
| seen | Jun 13 at 10:19 | |
| stats | profile views | 36 |
I am not a handy programmer but I play with php with a hope to develop creative ideas.
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Dec 17 |
comment |
How to categorize rows by SUM of a column in mysql? Thanks for two versions, but please note that the question originally asked for UPDATE the table, rather than SELECTing the data. |
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Dec 17 |
comment |
How to categorize rows by SUM of a column in mysql? yes I was thinking of user-variable, but I wished not to use sub-query, as it is slow in long tables (which is my case). But it seems, I have no other choice! |
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Dec 17 |
revised |
How to categorize rows by SUM of a column in mysql? added 158 characters in body |
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Dec 17 |
asked | How to categorize rows by SUM of a column in mysql? |
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Dec 16 |
accepted | How to GROUP_CONCAT between given rows? |
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Dec 16 |
accepted | How to split a string to and get info from another table in mysql |
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Dec 16 |
accepted | Which RDBMS has the most advanced “table-valued” functions? |
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Dec 16 |
accepted | How to order query results by tag weight in IN('tag1', 'tag2', 'tag3') |
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Dec 16 |
accepted | Is it bad to create many mysql temporary tables simultaneously? |
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Dec 16 |
asked | How to UPDATE a column to SET previous row value to NULL cells? |
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Dec 14 |
accepted | Splitting a column to normalized table |
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Dec 14 |
asked | How to GROUP_CONCAT between given rows? |
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Dec 13 |
asked | Splitting a column to normalized table |
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Dec 12 |
comment |
Which RDBMS has the most advanced “table-valued” functions? @JustinCave The reason for denormalization is that the individual words, if see in the original question, have no meaning or dependency in the database. We just want to calculate the sum of scores for a sentence (not even word). Thus, splitting the cell to numerous rows is not beneficial. De-normation in this case, is to create another table with one-to-many relationships to calculate the sentence score. This is indeed my goal; but that table should be virtual, because after update it is no longer needed. |
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Dec 12 |
comment |
Which RDBMS has the most advanced “table-valued” functions? @JustinCave I agree with your standpoint, but sometimes it is needed to de-normalize a database. |
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Dec 12 |
comment |
Which RDBMS has the most advanced “table-valued” functions? Perl/Python/PHP all can handle string functions well, but the problem is that fetching data and updating the database for thousands of queries is not efficient in practice. I've heard that PostgreSQL is fairly advanced, but I did not find more string functions comparing with mysql (of course, by a quick review). |
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Dec 12 |
comment |
Which RDBMS has the most advanced “table-valued” functions? This is a subtle solution for my case, but unfortunately I'm on linux. |
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Dec 12 |
comment |
Which RDBMS has the most advanced “table-valued” functions? @RemusRusanu I do not look for an advanced RDMBS, as I think mysql is. I think string functions of mysql are not very extensive. I am looking for a RDBMS (advanced or basic) but with a wide range of functions for strings (table valued). |
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Dec 12 |
comment |
Which RDBMS has the most advanced “table-valued” functions? @MartinSmith I edited the title as you instructed. |
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Dec 12 |
revised |
Which RDBMS has the most advanced “table-valued” functions? edited title |