I need to make the same query, but without a subquery! I need to get the count of rows in which genre_id is equal to the :deletedGenreId and the org_type_id value of this line in this table is not unique Answer There is nothing wrong with sub-query. Sub-query actually can help boost performance and increase c…
Tag: count
count number of times a value appears in a column not GROUP BY in SQL
Let us assume one has the following table (without the CountX column) : I would like to add the column ‘CountX’ with the number of different entries, per each combination of Name & City. I tried to use ROW_NUMBER() but it does not work well: I also tried to do a sub-query, using select distinc…
Combining MySQL Queries to get total amount
I’m trying to combine the following 2 queries. table_A stores a list of available appointments and number_open is how many open slots there are for a specific appointment, in this case 2020-06-30 AM which has 5 open. table_B contains any dates waiting to be accepted and has a different record for each d…
SQL query on two tables using two column as keys
I started studying SQL (not MySQL as it seems to be different in some parts) and I encountered this problem that i could not figure out how to solve I have the following tables: CREATE TABLE …
Convert SAS proc sql to Python(pandas)
I rewrite some code from SAS to Python using Pandas library. I’ve got such code, and I have no idea what should I do with it? Can you help me, beacase its too complicated for me to do it correct. I’ve changed the name of columns (for encrypt sensitive data) This is SAS code: This is my try in Pand…
SQL Date range by month returns in multiple rows
I am looking to get the count of entries by the month. However, this is returning the total count. I would like it to be something like. Month —– Count January —- 500 February —- 600 If I can’t get the month in there, thats fine, but I would definitely like to have it so the coun…
How can i find rows before a specific value?
I have the next row and what I want to do is to select all the rows before the type “shop”. I tried using case in the “where clause” but I didn’t get any result. How can I do it? |id|visitnumber|type …
Count grouped dates in SQL
I currently have data looking like: where grp is grouped consecutive dates. I want to count each of this grp, so with above data, I would like to get result of 5 (2 consecutive date groups for id 1, 3 consecutive date groups for id 2). Anyone have idea how to tackle this? Answer Do you just want count(distinc…
SQL Query to group by month and display individual month sum for a record
I’m trying to sum product codes with a particular description as total products sold in a month over the years. The two table used are: The date format is in ‘DD-MON-YYYY HH12:MI PM’. So far I’m able to formulate this: How do I separate the count as different month columns and get the …
How to eliminate blanks from SQL Summary Row with Totals with ROLLUP
I have the following SQL in Sql server 2016. I am trying to capture Totals of Site in Column and then Sum total in Row with ROLLUP. However, I am getting Nulls as well. I am providing sample data here: How can I eliminate NULLS? Is there a way to get results like: Answer You can filter the GROUP BY