Updates

src/lib/schema/build-column-definition.ts

@@ -3,8 +3,14 @@ import isVectorField from "./is-vector-field";
 import mapDataType from "./map-data-types";
 import MariaDBQuoteGen from "./mariadb-quote-gen";
 
+export type BuildColumnDefinitionOptions = {
+    /** UNIQUE is managed by syncUniqueConstraints on existing tables */
+    omitUnique?: boolean;
+};
+
 export default function buildColumnDefinition(
     field: BUN_MARIADB_FieldSchemaType,
+    options: BuildColumnDefinitionOptions = {},
 ): string {
     if (!field.fieldName) {
         throw new Error("Field name is required");
@@ -29,7 +35,12 @@ export default function buildColumnDefinition(
     }
 
     // VECTOR columns cannot be UNIQUE in the usual sense
-    if (field.unique && !field.primaryKey && !isVectorField(field)) {
+    if (
+        !options.omitUnique &&
+        field.unique &&
+        !field.primaryKey &&
+        !isVectorField(field)
+    ) {
         parts.push("UNIQUE");
     }
 
@@ -51,3 +62,12 @@ export default function buildColumnDefinition(
 
     return parts.join(" ");
 }
+
+/** Whether schema field requires NOT NULL */
+export function fieldRequiresNotNull(
+    field: BUN_MARIADB_FieldSchemaType,
+): boolean {
+    return Boolean(
+        field.notNullValue || field.primaryKey || isVectorField(field),
+    );
+}