prevent NULL contents before field change (old servers can have this wrongly defined...
commita326872b88d02ddf7cb0b6eb51f6a92aa5c323fd
authorstronk7 <stronk7>
Thu, 15 May 2008 17:02:05 +0000 (15 17:02 +0000)
committerstronk7 <stronk7>
Thu, 15 May 2008 17:02:05 +0000 (15 17:02 +0000)
tree105a965f3f96fd6cdbf0dd10c5b530fee07ba2d8
parent2ecc706b25c188a0be9bd106676e17784630d996
prevent NULL contents before field change (old servers can have this wrongly defined). MDL-14859
lib/db/upgrade.php