Question

Greetings All,

I have a SQLite database that I’m trying to add a new column to an existing table. My current structure is:

ID_NO, integer
GUIDE, integer
MATERIAL, text

I would like to add a new column which is the first letter of MATERIAL
KEY, text

Here is what I tried, but I get an error that MATERIAL doesn’t exist

INSERT INTO ERG_DATA (KEY) VALUES ( SUBSTR(MATERIAL,1,1))

Is INSERT the right command? Any help would be appreciated. Thanks in advanced!

Answer 1

From the top of my head, you want something like this (two commands)

ALTER TABLE erg_data ADD COLUMN key CHAR(1);
UPDATE erg_data SET key = SUBSTR(material, 1, 1);