Order keywords by frequency in PHP mySql

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8 Answers

keywordsorder
90%

I don't see the need for a join here. Simply list all the keywords along with the number of times the keyword appears, ordered from most frequent to less frequent.,What's the easiest way to order keywords by frequency? I mean to extract the number of times a keyword is used and order them., Is salesman the natural term to use about a male appliance store employee who walks around trying to help customers? , Strong teams are more than just connected, they are communities

I don't see the need for a join here. Simply list all the keywords along with the number of times the keyword appears, ordered from most frequent to less frequent.

SELECT keyword, COUNT( * ) freq
FROM keywordTable
GROUP BY keyword
ORDER BY freq DESC
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88%

I've got a database with video ids and N keywords for each video. I made a table with 1 video ID and 1 keyword ID in each row. ,What's the easiest way to order keywords by frequency? I mean to extract the number of times a keyword is used and order them.,I don't see the need for a join here. Simply list all the keywords along with the number of times the keyword appears, ordered from most frequent to less frequent.,Is it possible to do that with sql or do I need to use php arrays?

I don't see the need for a join here. Simply list all the keywords along with the number of times the keyword appears, ordered from most frequent to less frequent.

SELECT keyword, COUNT( * ) freq
FROM keywordTable
GROUP BY keyword
ORDER BY freq DESC
load more v
72%

I've got a database with video ids and N keywords for each video. I made a table with 1 video ID and 1 keyword ID in each row. ,What's the easiest way to order keywords by frequency? I mean to extract the number of times a keyword is used and order them.,I have a simple MySQL database keyword search that is functional. However results for the search are not being returned if the keywords are not in the same orde...,I would like to use reserved words such as "user" or "right" as table or column names in my databases. Until now I've been using back quotes, but I read somewhe...

I don't see the need for a join here. Simply list all the keywords along with the number of times the keyword appears, ordered from most frequent to less frequent.

SELECT keyword, COUNT( * ) freq
FROM keywordTable
GROUP BY keyword
ORDER BY freq DESC
65%

I've got a database with video ids and N keywords for each video. I made a table with 1 video ID and 1 keyword ID in each row. ,What's the easiest way to order keywords by frequency? I mean to extract the number of times a keyword is used and order them.,QUERY: alter table links order by id;,Is it possible to do that with sql or do I need to use php arrays?

I don't see the need for a join here. Simply list all the keywords along with the number of times the keyword appears, ordered from most frequent to less frequent.

SELECT keyword, COUNT( * ) freq
FROM keywordTable
GROUP BY keyword
ORDER BY freq DESC
load more v
75%

What is the easiest way to arrange keywords by frequency? I want to extract the number of times a keyword is used and order them.,Is it possible to do this using sql or do I need to use php arrays?,I do not see the need to join here. Just list all the keywords along with the number of times the keyword appears, from the usual to the less frequent.,I have a database with video IDs and N keywords for each video. I made a table with 1 video ID and 1 keyword in each row.

I do not see the need to join here. Just list all the keywords along with the number of times the keyword appears, from the usual to the less frequent.

SELECT keyword, COUNT( * ) freq
FROM keywordTable
GROUP BY keyword
ORDER BY freq DESC
load more v
40%

BEGIN and END are keywords but not reserved, so their use as identifiers does not require quoting. INTERVAL is a reserved keyword and must be quoted to be used as an identifier: ,MySQL 8.0 New Keywords and Reserved Words,MySQL 8.0 Keywords and Reserved Words, Keywords and Reserved Words

Nonreserved keywords are permitted as identifiers without quoting. Reserved words are permitted as identifiers if you quote them as described in Section 9.2, “Schema Object Names”:

mysql > CREATE TABLE interval(begin INT, end INT);
ERROR 1064(42000): You have an error in your SQL syntax...
   near 'interval (begin INT, end INT)'
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22%

You aggregated data into groups, but you want to sort the records in descending order by the number of elements in the groups.,To sort the selected records by the number of the elements in each group, you use the ORDER BY clause.,Let’s create a report on our users. We’ll group the results by country and count the number of users from each country. But we’ll also sort the groups in descending order by number of users. That way, the countries with the greatest number of users will appear at the top.,As usual, you can use both ascending or descending order with ORDER BY. If you want descending order (as in this example), you use the DESC keyword. Ascending order doesn't need any keyword because it’s the default, but you can use the ASC keyword if you want to be explicit. This is the same example but with results sorted in ascending order:

Solution:

SELECT country,
COUNT(id)
FROM user
GROUP BY country
ORDER BY COUNT(id) DESC;
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60%

Let’s look at an example using PHP. First, here’s how you’ll usually query MySQL from PHP:,Figure 4-1 shows how MySQL generally executes queries.,This is quite a different plan from the one suggested in the previous paragraph. MySQL wants to start with the actor, table (we know this because it’s listed first in the EXPLAIN output) and go in the reverse order. Is this really more efficient? Let’s find out. The STRAIGHT_JOIN keyword forces the join to proceed in the order specified in the query. Here’s the EXPLAIN output for the revised query:,The STRAIGHT_JOIN hint is useful when MySQL doesn’t choose a good join order, or when the optimizer takes a long time to decide on a join order. In the latter case, the thread will spend a lot of time in “Statistics” state, and adding this hint will reduce the search space for the optimizer.

mysql > SELECT * FROM sakila.actor -
   > INNER JOIN sakila.film_actor USING(actor_id) -
   > INNER JOIN sakila.film USING(film_id) -
   > WHERE sakila.film.title = 'Academy Dinosaur';
mysql > SELECT sakila.actor.*FROM sakila.actor...;
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