decimal[ (38,2)

[zezo2021]

if I create a field with this size decimal[ (38,2)

is this affect the performance?

maybe I will use a small number or not use the all 38 number

 

[Minty]

It will affect the amount of storage used:

Storage considerations with Decimal Data Type in SQL Server​

Data type SQL Decimal requires the following storage bytes for the specified precision as provided by Microsoft below:

Precision	Storage (Bytes)
1 – 9	5
10 – 19	9
20 – 28	13
29 – 38	17

 

[tvanstiphout]

I would stay away from the Decimal data type if you can. It is poorly supported in VBA.
Would Currency work for you? It is not just for monetary values.

 

[zezo2021]

It will affect the amount of storage used:

Storage considerations with Decimal Data Type in SQL Server​

Data type SQL Decimal requires the following storage bytes for the specified precision as provided by Microsoft below:

Precision	Storage (Bytes)
1 – 9	5
10 – 19	9
20 – 28	13
29 – 38	17

if I use the max 38 and store 1-9 examples for the number 100052.22
is the storage become 17

 

[zezo2021]

It will affect the amount of storage used:

Storage considerations with Decimal Data Type in SQL Server​

Data type SQL Decimal requires the following storage bytes for the specified precision as provided by Microsoft below:

Precision	Storage (Bytes)
1 – 9	5
10 – 19	9
20 – 28	13
29 – 38	17

based on this table
this is not dynamic storage (variable)
1-9 storage 5 bytes not affected by increasing or decreasing the number

is this correct?
@Minty

 

[Minty]

No. The storage requirement is set by the precision set in the data type.

If you specify Decimal(38,2) in the table design any value stored will take 17 bytes.
If you specify (9,2) it will take 5 bytes.

 

[zezo2021]

No. The storage requirement is set by the precision set in the data type.

If you specify Decimal(38,2) in the table design any value stored will take 17 bytes.
If you specify (9,2) it will take 5 bytes.

Is this the correct input
Decimal (4,2) = storage will be 5 bytes

 

[Minty]

Correct, regardless of what you store in it.
The maximum values would be -99.99 to 99.99

You can test this in SSMS quite easily.

 

[zezo2021]

Correct, regardless of what you store in it.
The maximum values would be -99.99 to 99.99

You can test this in SSMS quite easily.