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mdl_course_completions
MIGRATECourse completion history · 7 columnsProposed target
course_completions
Migration rule
Preserve completion status, timecompleted and reaggregate flags
Verification required
Compare source completion reports before/after; do not recompute away historical state.
Tracking
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| Column | Type | Null | Default | Target mapping | Risk |
|---|---|---|---|---|---|
| id | bigint | Not null | Preserve as legacy source ID; generate target PK unless target accepts stable legacy key. | High: verify semantics/relationship/security | |
| userid | bigint | Not null | '0' | Resolve to target foreign key via source-ID crosswalk; do not assume numeric IDs match target IDs. | High: verify semantics/relationship/security |
| course | bigint | Not null | '0' | Resolve to target foreign key via source-ID crosswalk; do not assume numeric IDs match target IDs. | High: verify semantics/relationship/security |
| timeenrolled | bigint | Not null | '0' | Map same-named field where semantics match; confirm target type, nullability, defaults and business meaning. | Schema-only inference |
| timestarted | bigint | Not null | '0' | Convert Unix epoch to UTC timestamp; verify 0/null sentinel and date semantics. | Schema-only inference |
| timecompleted | bigint | Nullable | Convert Unix epoch to UTC timestamp; verify 0/null sentinel and date semantics. | Schema-only inference | |
| reaggregate | bigint | Not null | '0' | Map same-named field where semantics match; confirm target type, nullability, defaults and business meaning. | Schema-only inference |