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PK for web, autoincrement vs UUID style, wich is better and why?


PK for web, autoincrement vs UUID style, wich is better and why?

By : Reef Alive
Date : October 16 2020, 11:12 PM
I hope this helps . The primary key is very important from point of view of relational model
uniqueness must be checked fast used in other table as foreign key used to join
code :


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set a:active style to links wich has got name value?

set a:active style to links wich has got name value?


By : Saiful Islam
Date : March 29 2020, 07:55 AM
Hibernate uuid generation and mysql uuid function uuid()

Hibernate uuid generation and mysql uuid function uuid()


By : rena_kli
Date : March 29 2020, 07:55 AM
like below fixes the issue I'm using binary format to store UUIDs in mysql database ( binnary(16) ) ,
What is BINARY Type ?
UUID in Swift3, but "version 1" style UUID

UUID in Swift3, but "version 1" style UUID


By : Christopher Brown
Date : March 29 2020, 07:55 AM
Hope this helps This is incredibly out of date. Don't do this any more.
I'd delete the answer, but it's ticked!
code :
func generateVersionOneAkaTimeBasedUUID() -> String {

    // figure out the sizes

    let uuidSize = MemoryLayout<uuid_t>.size
    let uuidStringSize = MemoryLayout<uuid_string_t>.size

    // get some ram

    let uuidPointer = UnsafeMutablePointer<UInt8>.allocate(capacity: uuidSize)
    let uuidStringPointer = UnsafeMutablePointer<Int8>.allocate(capacity: uuidStringSize)

    // do the work in C

    uuid_generate_time(uuidPointer)
    uuid_unparse(uuidPointer, uuidStringPointer)

    // make a Swift string while we still have the C stuff

    let uuidString = NSString(utf8String: uuidStringPointer) as? String

    // avoid leaks

    uuidPointer.deallocate(capacity: uuidSize)
    uuidStringPointer.deallocate(capacity: uuidStringSize)

    assert(uuidString != nil, "uuid (V1 style) failed")
    return uuidString ?? ""
}
Go: convert reflect.Value of type uuid.UUID (satori) back to uuid.UUID again

Go: convert reflect.Value of type uuid.UUID (satori) back to uuid.UUID again


By : Krieglied
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further Use a type assertion on the underlying value:
code :
u, ok := reflectedValue.Interface().(uuid.UUID)
Sequelize migration converting Sequelize.UUID primary key field to integer autoincrement in MYSQL

Sequelize migration converting Sequelize.UUID primary key field to integer autoincrement in MYSQL


By : siddesh Sangodkar
Date : March 29 2020, 07:55 AM
should help you out I fixed the problem by adding the id field on model with primary key property set to true.
code :
 id: {
type:DataTypes.UUID,
allowNull:false,
unique:true,
primaryKey:true
},
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