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mdl_messages
INVESTIGATEUnclassified Moodle core/plugin table · 11 columnsProposed target
Owner decision: migrate, transform, archive or exclude
Migration rule
No safe target inferred from schema name alone
Verification required
Inspect columns, row counts, code references, reports and retention requirements
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 | |
| useridfrom | bigint | Not null | Resolve to target foreign key via source-ID crosswalk; do not assume numeric IDs match target IDs. | Schema-only inference | |
| conversationid | bigint | Not null | Resolve to target foreign key via source-ID crosswalk; do not assume numeric IDs match target IDs. | High: verify semantics/relationship/security | |
| subject | longtext | Nullable | Map same-named field where semantics match; confirm target type, nullability, defaults and business meaning. | Schema-only inference | |
| fullmessage | longtext | Nullable | Map same-named field where semantics match; confirm target type, nullability, defaults and business meaning. | Schema-only inference | |
| fullmessageformat | tinyint(1) | Not null | '0' | Map same-named field where semantics match; confirm target type, nullability, defaults and business meaning. | Schema-only inference |
| fullmessagehtml | longtext | Nullable | Transform text/JSON/HTML as appropriate; sanitize and rewrite embedded Moodle URLs/file references. | Schema-only inference | |
| smallmessage | longtext | Nullable | Map same-named field where semantics match; confirm target type, nullability, defaults and business meaning. | Schema-only inference | |
| timecreated | bigint | Not null | Convert Unix epoch to UTC timestamp; verify 0/null sentinel and date semantics. | Schema-only inference | |
| fullmessagetrust | tinyint | Not null | '0' | Map same-named field where semantics match; confirm target type, nullability, defaults and business meaning. | Schema-only inference |
| customdata | longtext | Nullable | Transform text/JSON/HTML as appropriate; sanitize and rewrite embedded Moodle URLs/file references. | High: verify semantics/relationship/security |