I have an Angular app which displays a list and a Scala API which provides data. I encountered a problem (and the languages don’t matter, is just about logic). The problem is that the table from which I get data doesn’t have a primary key. Because I need to display the data plain in a widget (of t…
Tag: sql-limit
SQL select single row number x only
For processing SQL data in VBA I want to use a loop (For…Next) that reads line by line from a SQL database. As records were deleted the ID column has gaps. The table looks for example like this: Having four lines I would like to run of course a “For each” would do good, too. Answer If you wa…
Query with offset returns overlapping data sets
Initial attempts at getting a very simple pagination, using fetch n rows and then a subsequent call with offset, gives overlapping entries in Oracle. I was expecting the following to give me two unique sets of results. 1-100 and then 101-200 of the results that would have been returned if the first line had b…
SQLite how to use UPDATE and LIMIT at the same time?
What I’m looking for is to update only 1 row in a table where all the entries are, in the beginning, zero. After a while surfing the internet for answers, I found out that LIMIT should work fine with UPDATE, but also not quite. From what I’ve seen, I should have “enabled” some stuff wi…
select limit in sql
I wrote this query but gives me an error at line 15 (limit clause). we have 3 tables, state, email, and receiver. CREATE PROCEDURE `inbox`(IN `page_size` INT,IN `page_number` INT) BEGIN set @curr …
How can I get the 10 most recent rows from a database?
I want to choose an id in a table, sort it by date and show only the 10 newest entries. I have already tried following command: SELECT * FROM weather WHERE DATUM = (SELECT MAX(DATUM) WHERE ID=’0′)
How to select certain number of rows from large query result set in Teradata sql
I am new to Teradata sql and I have a query that selects over one million rows. I want to write teradata sql to select the first 500,000 rows, then the next 500,000 rows and then the last 100,000 + rows in my data set. For the first set I know I can use SELECT * FROM QRY1 ORDER BY
MySQL check two columns for value but with a preferred column result
I have a MariaDB SQL table, with two different ID rows. Id’s have been imported from a previous DB version (old_id reference is from another table), as a transitional measure searches need to be done to find id’s, with a preference for the older id value. Only ONE row can ever be returned . Table:…
Why does adding ORDER BY drastically speed up query?
I’ve discovered some very strange and counter-intuitive behaviour in PostgreSQL. I have a query structure as follows. I am selecting both the IDs and the count from a subquery. The subquery does the …
Select from row to last row
Is it possible for me with MySQL to select the from a specific row to the end of the table, without knowing how many rows there are left? My query at the moment is: But I want to be able to something like: Can this be done? Answer Just use a large value like 999999999 that is going to be