I would like to not use a union in my SQL query – how can I rewrite the following query? How can I rewrite this without the union? Answer Use Boolean logic: If you are combining with other conditions then make sure you have the correct parentheses to make it evaluate properly, e.g.: … so you aren’t caught out by
the query is actually fine and running but it doesn’t select distinct the column A.CONTRACT_NUMBER. This is the code: It runs normally but after checking the data, there are still repeated values in the A.CONTRACT_NUMBER column. A.CONTRACT_NUMBER is like the primary key column and I’d like to select unique values to that column Thanks! 😀 Answer Per contract you want
I have the following table rownum ID date owner 1 1 09/01/2022 null 2 1 09/02/2022 null 3 1 09/03/2022 Joe 4 1 09/04/2022 null 5 1 09/05/2022 Jack 6 2 09/01/2022 null 7 2 09/02/2022 John 8 2 09/02/2022 John 9 2 09/02/2022 John For every ID, I want to select the first occurrence of null that eventually results
I got 3 tables please see the below. Currently, a car has a unique tag assigned to them. I have employees with multiple roles. There are only 3 roles. 1 = Surveyor, 2 = Admin or 3 = Engineer. A car can be assigned to more than one employee. One car can have a surveyor, admin and engineer using it.
I am new at SQL so any help is appreciated. How can I improve on the following conditions in my where clause: Is there a way I can do this in one line or is there a better way of doing the same. Answer Convert the string literals to upper-case and get rid of the second line as it is
I have three tables using an Oracle database: The mix table interconnects Recipe and Ingredients. I am supposed to find the one cocktail made by the barman Otto which utilizes ingredients from Spain and Cuba. This is what I have tried until now: Expected Output from this query: At the moment, I am just getting all the cocktails made by
I am getting this error while running statement specified below ORA-00957: duplicate column name 00957. 00000 – “duplicate column name” My query: Answer Just need to add column aliases.
I have the below table with data – I want to create a query that displays the employees that had previous job as student and were then converted to “Employee” even if the final status is ACTIVE/INACTIVE I want to create a query that displays the below employees – The above output, should show if previous job has anyting like
I’m trying to write a SQL script that shows a column based on a user parameter. I can’t find an acceptable answer anywhere. This is a simplified version of what I want to do (in OracleDB): The pseudo code of what I want could be This is the expected result: Answer You can just put the logic into the where
Hi im looking for a query which will give me both common and non-common data in one query. Table 2 ID Assay 1 124 Result required_missing required_present 125 124 Based on req_ind column from table 1 , if req_ind is 1 and the same assay is present in table 2 i want to list it as above. required missing column