Closed. This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 2 years ago. Improve this question The question is as follows : My question is regarding SQL code for the following question. Final query should return the vendor information along with
Tag: mysql
SQL Weighted averages of multiple rows –
How would you go about to find the real weighted average of multiple rows: By real weighted, I mean like this calculator: https://www.rapidtables.com/calc/math/weighted-average-calculator.html (and not by multiplying value with weight). The weight for each answer is set in answers and values for each question in child-table answer_items. We want the weighted average for each question (a,b,c,d). We know what questions
My query to retrieve events between 2 search dates does not return any results, why?
Context I have modelized a calendar with a table. The entries are the calendar’s events: id ; event_start_date ; event_end_date. One entry is: 11 ; 2021-01-28 15:15:37 ; 2022-01-11 15:15:37 The script I’ve written accepts a search interval of dates as entries and should return all the events which are contained within the search interval (if the search interval is
LIKE statement SQL
Dont work brackets in LIKE statement I use MySQL WorkBench, I dont understand why SELECT * from user where name like’B[io]’ dont work. My DataBase: Answer Because MySQL does not support character classes in like expressions. Neither does the SQL standard. Use regular expressions: Incidentally, the like does work. You just have no data that starts with the five characters
error on MySQL when i add month to the query [closed]
Closed. This question is not reproducible or was caused by typos. It is not currently accepting answers. Want to improve this question? Update the question so it’s on-topic for Stack Overflow. Closed last year. Improve this question I have a dataset including a endDate and a startDate: endDate startDate 2021-02-01 2021-06-30 now I try datediff(endDate, startDate) and I get: 149
How to insert database mysql. Solve?
How can I insert the file data into the table mysql? code: import pymysql.cursors import pymysql as MySQLdb import pymysql from Bio import SeqIO try: conexao = MySQLdb.connect(host=”…
How to count each value with the same id in sql
I have a table like this How can I get the count of all values with Poll_id = 1 so I can get using sql Answer Use group by with where:
Joining three junction tables
my heads hurt from trying to figure this out! I have three tables -Players -Teams -Games Three junction tables with two columns. -player_teams -teams_games -player_games I need to list all Players who …
Get three last movements of the per ID with LAG and GROUP BY in MySQL
I hope someone can help with this query, I have a requirement for a query that groups the id of the last date, but I want to have three columns with the 3 last movements. So I tried grouping by the id and used MAX(date), and used LAG to get the three last movements, but I’m getting an error from
SQL : Keep ONE row with max value on a column depending on value of another column
It’s well documented on StackOverflow how to find the whole data for the row with some max value in a column per some group identifier (SQL select only rows with max value on a column). But that given …