What is the meaning of SELECT EXISTS (SELECT 1 FROM favoritelist WHERE id=:id) in: @Query(“SELECT EXISTS (SELECT 1 FROM favoritelist WHERE id=:id)”) public int isFavorite(int id);
How to fill missing dates by ID in a table in sql
I have table A which has Dates and EMPID eg below I also have Table B which has a date range My table A has missing dates and EMPID. How can I merge the two tables to have the following table. Thanks in advance. This is being used in a dataset(SQL) in SSRS. P.S. I’m new to coding in SQL
how to get sql result as objects
I have three tables: Table USER id name email Table CAMPUS id user_id (foreign key) name Table POST id title user_id (foreign key) A User belongs to a Campus, and a Post belong to a User. I want to write a query to fetch posts inner join with user inner join with campus. The result i get: [{ id username
ORACLE keep identity columns always as one (1)
I found some questions similar to mine, but I couldn’t find the exact solution. In the Data Warehouse we have, we sometimes “Delete” or “Truncate” the table when we fix something or some other similar …
How to check if a specific data exist in a text file before insert it to SQL database table?
I have a Employee text file employee.txt which has some data in it. For instance: I want to read the file and get the empId from it and pass it to a function to check if that empId already exists in the SQL database table. Here’s my function: How do I get the empId from the file? And how to
I am getting an incorrect sum in my Access query?
I have a database that tracks parts loans and payback to multiple organizations in my company. I have a query that for a given customer and part name should show a sum of how many have been loaned out …
Trying to update a table in mysql 8.0 using ROW_NUMBER fails within the subquery
I am trying to update a table in my database using ROW_NUMBER in mysql. Table stats: id value value_rank ——————————- 1 635550348443 NULL 2 615342703162 NULL …
SQL count and group only returns first row for each group
My table: +———-+———————+ | bonus_id | created | +———-+———————+ | 11 | 2020-04-28 19:50:13 | | 12 | 2020-04-29 00:00:00 | | …
Oracle how to truncate a decimal to 1 significant digit?
I would like to round decimal numbers down to the first significant digit. Since they will all have a varying number of leading zero decimals, i searched this site and found the following expression. …
String Aggregtion to create pivot columns in Big Query
I am trying to implement this exact solution linked below, but it seems GROUP_CONCAT_UNQUOTED is no longer a valid BQ function. Is there a solution to this that works in 2020? p.s. I would have just …