Altering a column: null to not null
Altering a column: null to not null
Altering a column: null to not null
Re: Altering a column: null to not null
First, make all current `NULL` values disappear:
```
UPDATE [Table] SET [Column]=0 WHERE [Column] IS NULL
```
Then, update the table definition to disallow "NULLs":
```
ALTER TABLE [Table] ALTER COLUMN [Column] INTEGER NOT NULL
```
```
UPDATE [Table] SET [Column]=0 WHERE [Column] IS NULL
```
Then, update the table definition to disallow "NULLs":
```
ALTER TABLE [Table] ALTER COLUMN [Column] INTEGER NOT NULL
```