MySQL - Get Row Number on Select

MySQL - Get row number on select

Take a look at this.

Change your query to:

SET @rank=0;
SELECT @rank:=@rank+1 AS rank, itemID, COUNT(*) as ordercount
  FROM orders
  GROUP BY itemID
  ORDER BY ordercount DESC;
SELECT @rank;

The last select is your count.

How to get row number in select query mysql

try this. so the counter works only on the result:

SELECT  @n := @n + 1 AS id , tmp.*
FROM (
  SELECT DISTINCT YEAR (`Date`) AS Libelle FROM Datas GROUP by Libelle ) AS tmp,
  ( SELECT  @n := 0) as parameter;

show row number in select query

In the increment you are using rowno but in the initial assignment you are using rownum

Mysql get row number

Try with Sub - query:

SELECT * 
FROM (
    SELECT id,
        @curRow := @curRow + 1 AS row_number
    FROM srwk_esp_registration
    JOIN (
        SELECT @curRow := 0
        ) r
    ) sub
WHERE sub.ID = 22

MySQL - Select row number of a record

Try this perhaps:

SET @rownum = 0;
SELECT id 
FROM (SELECT *, @rownum:=@rownum + 1 AS id FROM dict ORDER BY words) d
WHERE d.words LIKE CONCAT('c','%')

As single query, try this:

SELECT id 
FROM (SELECT *, @rownum:=@rownum + 1 AS id FROM dict, (SELECT @rownum:=0) r ORDER BY words) d
WHERE d.words LIKE CONCAT('c','%')

ROW_NUMBER() in MySQL

I want the row with the single highest col3 for each (col1, col2) pair.

That's a groupwise maximum, one of the most commonly-asked SQL questions (since it seems like it should be easy, but actually it kind of isn't).

I often plump for a null-self-join:

SELECT t0.col3
FROM table AS t0
LEFT JOIN table AS t1 ON t0.col1=t1.col1 AND t0.col2=t1.col2 AND t1.col3>t0.col3
WHERE t1.col1 IS NULL;

“Get the rows in the table for which no other row with matching col1,col2 has a higher col3.” (You will notice this and most other groupwise-maximum solutions will return multiple rows if more than one row has the same col1,col2,col3. If that's a problem you may need some post-processing.)

Get total row number while only selecting a single row

One method is to use row_number() in a subquery:

select c.*
from (select c.*,
             rank() over (partition by competitionid order by rating desc) as ranking
      from competitors c
      where competitionId = 'someotherid1'
     ) c
where accountId = 'theidoftheaccount3';

EDIT:

An alternative without window functions is:

select count(*) + 1 as ranking
from competitors c
where c.competitionId = 'someotherid1' and
      c.rating > (select c2.rating
                  from competitors c2
                  where c2.competitionid = c.competitionId and
                        c2.accountId = 'theidoftheaccount3' 
                 );

Select specific row from mysql table

You can use LIMIT 2,1 instead of WHERE row_number() = 3.

As the documentation explains, the first argument specifies the offset of the first row to return, and the second specifies the maximum number of rows to return.

Keep in mind that it's an 0-based index. So, if you want the line number n, the first argument should be n-1. The second argument will always be 1, because you just want one row. For example, if you want the line number 56 of a table customer:

SELECT * FROM customer LIMIT 55,1

Cannot find ROW_NUMBER() function in mysql 8.0.17?

row is a reserved word in mysql 8.0.2+ according to the documentation.

This should work:

SELECT custid, 
email, 
ROW_NUMBER() OVER ( PARTITION BY email ORDER BY email ) AS `row` 
FROM customers;

Or you can ditch row for something non-problematic such as AS rn.

Notice that partitioning by email and ordering by it at the same time doesn't make much sense.

Fiddle

How to easily get row number when using LIMIT in MySQL?

You can't do it without using variables, e.g.:

SELECT m.*, @rownum := @rownum + 1 as `num`
FROM myTable m, (SELECT @rownum := 120) a 
ORDER BY myValue LIMIT 120,10;

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