sql - SQLite: Inserting values from table in database1 to table in database2 without overwriting -


i can't wrap head around this. we're 2 dudes manually writing textbits in conflicting databases (i know, it's not cool), , need integrate our work. sorry if it's duplicate, don't other answers. please patient, need here.

two different databases needs merge 1 column, , if possible, avoid overwriting. 

his database:         database:     result:  database 1            database 2        database 2 table1                table1            table1 column              column          column  blah                  null              blah null                  bla               bla bla                   bla               bla bla

i'm guessing inner join mixed insert into?

we're working in gui named valentina studio sql editor.

try like

insert tab3 (col1)  select col1 tab1 col1 not null union  select col1 tab2 col1 not null

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