I came across this question Here is my response to it, I just started myself learning SQL recently. Select a.roll_number , a.name , b.roll_number from student_information a join …
Tag: mysql
How to find the most appropriate date between overlapping date periods in mysql
I`w got an 2 tables with such data: Table 1 id s_id s_date 1 33 2021-03-05 10:36:59 2 33 2021-03-06 10:36:59 3 33 2021-03-09 10:36:59 4 33 2021-03-10 13:36:59 5 33 2021-03-11 12:36:59 6 33 2021-…
SQL how to select a single value from a table with LEFT JOIN, In Google Datastudio
I have two tables one table called mailing_events and one table called mailing_outletcontact. Examples of my tables are below. The mailing table is very simple with no duplicates: My Second table “mailing_outletcontact” has duplicates in the email field. I am trying to query the database in Datast…
Can’t find MySql.Data.MySqlClient.MySqlException insert query error
This is the error message MySql.Data.MySqlClient.MySqlException: ‘You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ””)’ at line 1′ this is my query I’ve been looking over at it for over an …
SQL query that has a lookup field
I have a table Invoices that has 3 fields: InvoiceProductCode InvoiceQuantity InvoicePrice InvoiceProductCode can be blank, but if it’s not blank, I would like it to be filled with a value from …
ERROR 1064 (42000) while creating a table and database in mysql
I am getting following error while executing my mysql query via a .sql script, but couldn’t tell what is causing this error. I am using mysql Ver 8.0.23 for macos10.15 on x86_64 (MySQL Community …
Limit the results returned by MySQL join to 1
I’m doing a JOIN on two tables and the right side has multiple results for the ON clause: e.ID = ti.event_id. How do I limit the results returned by the join to 1? Sort of like LIMIT 1 events_detail …
Error in SQL syntax [function in node-red]
I’m trying to post the data into database through node-red but I got this error. “Error: ER_PARSE_ERROR: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ‘insert into customizations(custom_id, product_id, pa…
Count occurrence of digits and using a case expression in a stored procedure
I want to write a stored procedure that displays the level of activity that an author has when it comes to create posts on a blog. I want to input a username in the call statement like call activity_level(‘Ugrob’); and get the following result nickname level_activity aupo_auth_id author_id time_po…
Is there a flexible way to specify ranges of dates?
I am working with MySQL. I have some queries that begin like this: I also sometimes need to run the same query, but with each date range being a week (Monday to Sunday), or a calendar month. Moreover, sometimes there are 100 or more of these, which is quite prone to typos in addition to occupying a lot of lin…