Select Statement in Sqlite Recognizing Row Number

Select statement in SQLite recognizing row number

You want to use LIMIT and OFFSET

SELECT * FROM Table LIMIT 10 OFFSET 0

Which can also be expressed with the following shorthand syntax

SELECT * FROM Table LIMIT X,Y

Where X represents the offset, which is exclusive, and Y represents the quantity, so for example

SELECT * FROM Table LIMIT 50,50

Would return rows 51-100

SQLite, selecting a row by row index, not id

You can use the LIMIT and OFFSET keywords to select a single record at a specific location in your result set.

EX: This statement will return one row at index position 10

SELECT * FROM Table LIMIT 1 OFFSET 10; 

note:
since answering the question SQLite has added window functions. With window functions, it is possible to return the row number of a record in a query.

SELECT 
row_number() OVER (ORDER BY FirstName, LastName) AS rowNum,
FirstName, 
LastName,
FROM People;

Window Functions were added in version sqlite 3.25

• System.Data.Sqlite - 1.0.110.0 or newer
• Microsoft.Data.Sqlite - 2.2.2 or newer

How to use ROW_NUMBER in sqlite

Try this query

select id, value, (select count(*) from tbl b  where a.id >= b.id) as cnt
from tbl a

FIDDLE

| id | value | cnt |
--------------------
|  1 |   yes |   1 |
|  3 |   yes |   2 |
|  4 |   yes |   3 |
|  6 |   yes |   4 |
|  9 |   yes |   5 |

How can I select rows by range?

For mysql you have limit, you can fire query as :

SELECT * FROM table limit 100` -- get 1st 100 records
SELECT * FROM table limit 100, 200` -- get 200 records beginning with row 101

For Oracle you can use rownum

See mysql select syntax and usage for limit here.

For SQLite, you have limit, offset. I haven't used SQLite but I checked it on SQLite Documentation. Check example for SQLite here.

In SQLite3, is it possible to list out specific rows?

First filter the table so that only the rows with the scores that you want are returned and then use ROW_NUMBER() window function to rank the rows of each Score based on ID so that you can filter out the rows that exceed the first 3 of each group:

SELECT ID, Score, email, add
FROM (
  SELECT *, ROW_NUMBER() OVER (PARTITION BY Score ORDER BY ID) rn
  FROM Table_Name
  WHERE Score = '88' OR Score = '77'
)
WHERE rn <= 3;

For versions of SQLite prior to 3.25.0 that do not support window functions use a correlated subquery:

SELECT t1.*
FROM Table_Name t1
WHERE t1.Score = '88' OR t1.Score = '77'
  AND (SELECT COUNT(*) FROM Table_Name t2 WHERE t2.Score = t1.Score AND t2.ID <= t1.ID) <= 3;

retrieve SQLite rows by rowid efficiently

there is a code addon that uses a virtual table to do exactly what you want.

https://www.sqlite.org/src/artifact/9dc57417fb65bc78
https://www.sqlite.org/src/artifact/870124b95ec4c645

SQLite - select from table a based on result of calculation of relevant rows in table b

You can find the difference in vote count for each topic in subquery and then join it with topics table like this:

select t.*
from topics t
join (
    select topic_id, 
        sum(case when topic_vote = 'true' then 1 else 0 end) -
        sum(case when topic_vote = 'false' then 1 else 0 end) diff
    from topic_votes
    group by topic_id
) v on t.topic_id = v.topic_id
order by v.diff desc, t.topic_id;

I assumed the relation column is topic_id. Feel free to set it to whatever column name you have.

How do I write a query that outputs the row number as a column?

SELECT ROW_NUMBER() OVER (ORDER BY beatle_name ASC) AS ROWID, * FROM beatles

Get total number of filled row in table in SQLite

A query like this will work:

SELECT COUNT(*) from raw where rawData <> '' AND rawData IS NOT NULL

This assumes there is a table called "raw" and the column you're checking against is "rawData"

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