As I recall sqlite probably doesn't case about string types included in the CREATE TABLE field list, so TEXT, VARCHAR, VARCHAR(200) are identical from its point of view. Today I needed to increase the number of chars in VARCHAR statement since the library that uses sqlite actually does care about the value. So I did it with writable_schema pragma temporary change. Everything worked but just wondering, what kind of changes are safe if it is absolutely necessary? I suppose the order of fields and the presence of every one of them is absolutely necessary, but what about types changes like moving from INTEGER to TEXT? Also is it possible to add to sqlite a limited ALTER TABLE .. MODIFY support that could wrap all known "safe" changes and invoking errors on all "unsafe" ones?
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