Interface SchemaDiff

Result of diffing source schema against existing table.

interface SchemaDiff {
    AddedColumns: TargetColumnConfig[];
    ModifiedColumns: ColumnModification[];
    RemovedColumns: string[];
    Warnings: string[];
}

Properties

Columns that exist in source but not in target — need ALTER TABLE ADD.

ModifiedColumns: ColumnModification[]

Columns that exist in both but with different types — need ALTER TABLE ALTER.

RemovedColumns: string[]

Columns that exist in target but not in source — deprecated (no physical drop).

Warnings: string[]

Warnings about skipped changes (PK type changes, etc.) — reported but not executed.