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HashBytes Computed Column: Exclude Column

How to create a Hash Computed Column for Many Columns?Choosing the right algorithm in HashBytes functionComputed Column Index Not UsedWhen are computed columns computed?Use a scalar hashing function in a computed column - non-deterministic?Changing primary key from IDENTITY to being persisted Computed column using COALESCEReferencing another table from a computed columnAdd computed column with “IN” syntaxSQL Server 2016 concurrency limitations? Tuning for db concurrencyDatatype for a Persisted Computed Column? Should I Convert/Cast When Creating It?How to create a Hash Computed Column for Many Columns?

0

We want to create Hashbytes computed column Non-Persisted. Table has twenty columns, and would like to exclude IdentityId column. How could I do this in computed column? Is there a SQL library function to exclude certain column? Purpose is for easy maintenance and as columns get added, don't want developers to forget adding extra columns. So hashbyte should always take all columns, exclude identity.

This is manual way typing all the columns:

CREATE TABLE [dbo].[CustomerTransactiont]

(

    CustomerTransactionId int primary key identity(1,1),

    CustomerName varchar(255),

    Price decimal(10,2),

    Quantity int,...

    .....

    RowHash as hashbytes('SHA2_512', CONCAT(CustomerName,'|'

                                                ,Price), '|'

                                                ,Quantity), '|'...

                                                )) 

) 

Reference:
How to create a Hash Computed Column for Many Columns?

sql-server database-design sql-server-2016 computed-column hashing

share

asked 3 mins ago

GregThomas582GregThomas582

374

add a comment | 

0

We want to create Hashbytes computed column Non-Persisted. Table has twenty columns, and would like to exclude IdentityId column. How could I do this in computed column? Is there a SQL library function to exclude certain column? Purpose is for easy maintenance and as columns get added, don't want developers to forget adding extra columns. So hashbyte should always take all columns, exclude identity.

This is manual way typing all the columns:

CREATE TABLE [dbo].[CustomerTransactiont]

(

    CustomerTransactionId int primary key identity(1,1),

    CustomerName varchar(255),

    Price decimal(10,2),

    Quantity int,...

    .....

    RowHash as hashbytes('SHA2_512', CONCAT(CustomerName,'|'

                                                ,Price), '|'

                                                ,Quantity), '|'...

                                                )) 

) 

Reference:
How to create a Hash Computed Column for Many Columns?

sql-server database-design sql-server-2016 computed-column hashing

share

asked 3 mins ago

GregThomas582GregThomas582

374

add a comment | 

We want to create Hashbytes computed column Non-Persisted. Table has twenty columns, and would like to exclude IdentityId column. How could I do this in computed column? Is there a SQL library function to exclude certain column? Purpose is for easy maintenance and as columns get added, don't want developers to forget adding extra columns. So hashbyte should always take all columns, exclude identity.

This is manual way typing all the columns:

CREATE TABLE [dbo].[CustomerTransactiont]

(

    CustomerTransactionId int primary key identity(1,1),

    CustomerName varchar(255),

    Price decimal(10,2),

    Quantity int,...

    .....

    RowHash as hashbytes('SHA2_512', CONCAT(CustomerName,'|'

                                                ,Price), '|'

                                                ,Quantity), '|'...

                                                )) 

) 

Reference:
How to create a Hash Computed Column for Many Columns?

sql-server database-design sql-server-2016 computed-column hashing

share

asked 3 mins ago

GregThomas582GregThomas582

374

CREATE TABLE [dbo].[CustomerTransactiont]

(

    CustomerTransactionId int primary key identity(1,1),

    CustomerName varchar(255),

    Price decimal(10,2),

    Quantity int,...

    .....

    RowHash as hashbytes('SHA2_512', CONCAT(CustomerName,'|'

                                                ,Price), '|'

                                                ,Quantity), '|'...

                                                )) 

) 

share

asked 3 mins ago

GregThomas582GregThomas582

374

share

asked 3 mins ago

GregThomas582GregThomas582

374

asked 3 mins ago

GregThomas582GregThomas582

374

asked 3 mins ago

GregThomas582GregThomas582

374