I have several tables like this in a Schema/Database (the Schema is called “user”) in MySQL workbench: Suppose Sarah gets a score change to 5. I want to update all of her scores in all of the tables in which she exists, to be 5. So then the 3 tables would look like this: Is this possible to do usi…
Tag: sql
1:n disable constraints for the n-side?
The Problem I have a 1:n relation, but the n side shouldnt rely on constraints. So i actually wanna insert a EntityPojo via its future id, when its not saved yet ( Lets ignore that its a bad practice ). This looks kinda like this. Cascading is not possible here, i only have its future ID, not a reference to
How to retrieve the rows between two dates in PostgreSQL?
How to retrieve the row between two dates in PostgreSQL? In the above example, end_date column is NULLABLE. I want to retrieve the row using the date which falls in-between START_DATE & END_DATE. Endate NULL is considered it as infinite. I am clueless on how to pass single date input to two columns and ha…
jOOQ – DefaultRecordMapper – List
Can the DefaultRecordMapper handle lists? Model example (really getter/setter are used): I first tried it with a simple select: Also I have tried using the nested syntax but it didn’t work: The list never gets initialized. I am unsure if I could be doing something wrong. Is this possible with the Defaul…
MyBatis oracle insert new row always return wrong primary id value
Try to get the primary id after inserting a new row to oracle DB Here is the java call New data/row can be inserted into DB with no issue with correct primary key/id. But myID is always returned as 1(supposed to be 8971). How can I get the correct value. Thanks in advcance. version: Answer Your insert returns…
Coalesce jsonArrayAgg to empty array in jOOQ
What is the equivalent for coalesce in the new jOOQ 3.14 SQL/JSON supporting version (in PostgreSQL)? The following unfortunately fails with the error “COALESCE types json and uuid[] cannot be matched”. Answer JSON.json() or JSONB.jsonb(), e.g.: But you can also use the jsonArray() or jsonbArray()…
Is there a algorithm to resolve credit rating?
I need to implement a logic in either Java OR SQL for the following. There are credit ratings from numbers 1 to 11. And corresponding to each rating say x, I have 3 grades, effectively :x+, x and x-. …
With MyBatis. How can I map two different records in one table, then construct a single query result when joining that table?
The definition of my query result entity has two fields, origin and destination, which are both Location type, and I’m trying to fetch the information in location table with JOINS.Here are the resultMap definition and SQL: SQL: It is supposed that the origin and destination are different records, howeve…
Making a SQL query that selects of list of values from more than one column
I have a table which is something like this: AccountNum Name RoutingNum a1 name1 r1 a2 name2 r2 a2 name3 r1 I want to select all rows with a specific pair account number and routing number, for example : For some context I just want to make a single call, that I would be making using jdbc, this is my
SQL query is only returning one entry, when it should be returning several
I am creating a book tagging system and I am trying to call all the books with the same tag. My query is only turning up the first book, and not any of the following books with the same tag. Here is the books table for the database Here is the book_tags table for the database: Here is the BookTagDAOImpl