Trying to add a new column into pre-existing table with the following command:
ALTER TABLE randomquestions
ADD Total AS R1_Number + R2_Number + R3_Number + R4_Number PERSISTED
I get this error:
#1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'AS R1_Number + R2_Number + R3_Number + R4_Number PERSISTED' at line 2
Can anyone tell me where I went wrong with the syntax?
If MySQL 5.7.6+
Generated Columns :
ALTER TABLE randomquestions
ADD Total INT AS (R1_Number + R2_Number + R3_Number + R4_Number) STORED;
Note that you may need to change datatype depending of datatype of Rx_Number
.
Alter looks good missing parenthesis and column type.
ALTER TABLE randomquestions
ADD Total int AS (R1_Number + R2_Number + R3_Number + R4_Number) PERSISTED
I tried a similar statement with the parenthesis and it worked:
use test
alter table [dbo].[tablename]
Add total2 as (price * 2) persisted
(so I guess it's the parenthesis, it's not finding your table, or just a syntax error with the field names.)
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