Interface: ColumnDeclaration

Defined in: src/integrity/column-types/types.ts:52

The object spelling of one column's declaration.

Properties

nullable?

readonly optional nullable?: boolean

Defined in: src/integrity/column-types/types.ts:75

true — a row of this column may legitimately carry NO VALUE (null, undefined, or the key simply not set on that row), and such a row is never a type violation.

Default false, and the default is the strict one ON PURPOSE. The field failure this check is built from was a value that went missing and left an empty string behind; had the same code left a null behind, the defect would have been identical and a lenient default would have waved it through. One word turns it off, and every finding names that word — so a legitimate null column costs a one-word edit, while a silent default would cost the bug.

nullable is a promise about VALUES. It is NOT a promise about the column's existence: a declared column that appears in no row at all is a missing-column finding whether or not it is nullable, because the declaration named a column and the result has no such column. The valve for "this column may or may not be there" is to not declare it — unlisted columns are allowed and unjudged.

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type

readonly type: ColumnType

Defined in: src/integrity/column-types/types.ts:54

What the column holds.