I've these two models: In my unit test, if I do: I get an error: I can't intercept the flow in my CenterView, perform_create() is not interpe ...

I just start learning about Cassandra and going deeper to understand what is happening backstage that makes Cassandra too much faster. I go through th ...

I am using BIGSERIAL as a Primary key and I want to make use of the deleted row's ids. Example of the table that I want re-use the deleted ids from t ...

I ve a Sql table (mariaDB) with 2 Primary keys. I want to remove the rows where the first primary key is duplicated.(yes i know that primary keys cant ...

I have a 40M record table having id as the primary key. I execute a select statement as follows: It is ok and the query executes in a reasonable ti ...

How to create a table in SQL with the following attributes? The table has two columns A and B. The primary key of the table is (A, B). All val ...

In DolphinDB, it seems I cannot specify a non-temporal column for the sortColumns of createPartitonedTable with the TSDB storage engine. Or is there a ...

generally in postgrest the uuid data type is used for the id, but in oracle it gives me an error : ORA-00902: invalid datatype Blockquote ORA-0 ...

I need to make the connection with the PK from a table to its correspondent FK from another table. This is my db: I only have the case_id from the ...

first question posted... The database is in italian, only thing you should be aware of is that articolo = article, dettagli = details, codice = code/ ...

I have a List of Values called "BOOK.NAME ", backed by the following SQL: This LoV returns "id_book" and displays "Name". When I display this LoV ...

I need to change a PRIMARY KEY CONSTRAINT in PostgreSql from a single to a composite key, using Scala's Play Framework Evolutions. This Change Primary ...

I'm trying to add new records. There is a list of 4 tests. ResultId is the primary key and it is an AutoNumber column. The button adds tests scores ...

I compare two entity with different type of ID and see different situations in tests. When i use type Long for ID - it's ok. But when UUID it throws O ...

I have created a data table "user" in OceanBase, the primary key is id, there are 3 records as follows: Then, When I added a new record '1003', it ...

I have two table tblPerson and tblGender the coulmn 'GenderID'in tblPerson is a foriegn key for the coulmn 'ID'(primary) in the tblGender here is a ...

In SQL Server, mySQL, its 16. In postgres, its greater but I cannot find any documentation. I created a table with 20 columns as the PK and it worked ...

I want to use BINARY UUIDs as my primary key in my tables, but using my own custom functions that generates optimised UUIDs loosely based on this arti ...

I want a simple function that takes in all record columns and creates them if it does not exist. The table here is just a dummy, my point is more abou ...

I am working on tables where primary keys are sometimes not defined. I have observed the following behavior while trying to delete duplicates using t ...