diff --git a/buildConstants.js b/buildConstants.js
index c8061cf..ce81025 100644
--- a/buildConstants.js
+++ b/buildConstants.js
@@ -23,6 +23,7 @@ const EXCLUDED_FILES = [
 	'node_modules',
 	'lint-staged.config.js',
 	'scripts',
+	'test',
 ];
 
 module.exports = {
diff --git a/forward_engineering/ddlProvider/ddlHelpers/columnDefinition/getColumnConstraints.js b/forward_engineering/ddlProvider/ddlHelpers/columnDefinition/getColumnConstraints.js
index ffafc2e..76dce71 100644
--- a/forward_engineering/ddlProvider/ddlHelpers/columnDefinition/getColumnConstraints.js
+++ b/forward_engineering/ddlProvider/ddlHelpers/columnDefinition/getColumnConstraints.js
@@ -46,23 +46,31 @@ const getConstraintName = ({ unique, primaryKey, primaryKeyOptions, uniqueKeyOpt
 	return trim(options.constraintName) || getDefaultConstraintName({ entityName, postfix });
 };
 
+/**
+ * Build the column nullability clause.
+ *
+ * @param {{ nullable?: boolean }} params Column nullability.
+ * @returns {string} Nullability DDL fragment.
+ */
+const getColumnNullability = ({ nullable }) => (nullable ? '' : ' NOT NULL');
+
 /**
  * Build column constraint clauses.
  *
  * @param {ColumnConstraintParams} params Column constraint flags.
  * @returns {string} Constraints DDL fragment.
  */
-const getColumnConstraints = ({ nullable, unique, primaryKey, primaryKeyOptions, uniqueKeyOptions, entityName }) => {
+const getColumnConstraints = ({ unique, primaryKey, primaryKeyOptions, uniqueKeyOptions, entityName }) => {
 	const { constraintString, statement } = getOptionsString({
 		...getOptions({ primaryKey, unique, primaryKeyOptions, uniqueKeyOptions }),
 		constraintName: getConstraintName({ unique, primaryKey, primaryKeyOptions, uniqueKeyOptions, entityName }),
 	});
 	const primaryKeyString = primaryKey ? ` PRIMARY KEY` : '';
 	const uniqueKeyString = unique ? ` UNIQUE` : '';
-	const nullableString = nullable ? '' : ' NOT NULL';
-	return `${nullableString}${constraintString}${primaryKeyString}${uniqueKeyString}${statement}`;
+	return `${constraintString}${primaryKeyString}${uniqueKeyString}${statement}`;
 };
 
 module.exports = {
+	getColumnNullability,
 	getColumnConstraints,
 };
diff --git a/forward_engineering/ddlProvider/ddlProvider.js b/forward_engineering/ddlProvider/ddlProvider.js
index 45455d0..e828925 100644
--- a/forward_engineering/ddlProvider/ddlProvider.js
+++ b/forward_engineering/ddlProvider/ddlProvider.js
@@ -44,7 +44,7 @@ const { assignTemplates } = require('../utils/assignTemplates');
 const keyHelper = require('./ddlHelpers/key/keyHelper.js');
 const { getColumnType } = require('./ddlHelpers/columnDefinition/getColumnType.js');
 const { getColumnDefault } = require('./ddlHelpers/columnDefinition/getColumnDefault.js');
-const { getColumnConstraints } = require('./ddlHelpers/columnDefinition/getColumnConstraints.js');
+const { getColumnNullability, getColumnConstraints } = require('./ddlHelpers/columnDefinition/getColumnConstraints.js');
 const {
 	getTableCommentStatement,
 	getColumnComments,
@@ -282,6 +282,7 @@ const convertColumnDefinition = (columnDefinition, template = templates.columnDe
 		templateData: {
 			name: wrapInQuotes(columnDefinition.name),
 			type: getColumnType(columnDefinition),
+			nullability: getColumnNullability(columnDefinition),
 			default: getColumnDefault(columnDefinition),
 			constraints: getColumnConstraints(columnDefinition),
 		},
diff --git a/forward_engineering/ddlProvider/templates.js b/forward_engineering/ddlProvider/templates.js
index e92a4f3..2719940 100644
--- a/forward_engineering/ddlProvider/templates.js
+++ b/forward_engineering/ddlProvider/templates.js
@@ -27,7 +27,7 @@ module.exports = {
 
 	createTableProps: '${columns}${keyConstraints}${checkConstraints}${foreignKeyConstraints}',
 
-	columnDefinition: '${name}${type}${default}${constraints}',
+	columnDefinition: '${name}${type}${nullability}${default}${constraints}',
 
 	createForeignKey:
 		'ALTER TABLE ${foreignTable} ADD CONSTRAINT ${name} FOREIGN KEY (${foreignKey}) REFERENCES ${primaryTable} (${primaryKey})${onDelete};',
diff --git a/package.json b/package.json
index 52e01b2..3e88de2 100644
--- a/package.json
+++ b/package.json
@@ -66,7 +66,8 @@
 		"pre-push": "npm run check"
 	},
 	"scripts": {
-		"check": "npm run format:check && npm run lint && npm run types:check && npm run bundle:check",
+		"check": "npm run format:check && npm run lint && npm run types:check && npm test && npm run bundle:check",
+		"test": "node --test test/*.test.js",
 		"types:check": "tsc --noEmit",
 		"lint": "oxlint --type-aware --deny-warnings .",
 		"bundle:check": "node esbuild.package.js --write=false",
diff --git a/test/columnDefinition.test.js b/test/columnDefinition.test.js
new file mode 100644
index 0000000..5f8ec4e
--- /dev/null
+++ b/test/columnDefinition.test.js
@@ -0,0 +1,54 @@
+const assert = require('node:assert/strict');
+const { test } = require('node:test');
+const createDdlProvider = require('../forward_engineering/ddlProvider/ddlProvider');
+
+const ddlProvider = createDdlProvider(null, null, null);
+
+void test('places NOT NULL before the ROWID generated clause', () => {
+	const columnDefinition = ddlProvider.convertColumnDefinition({
+		name: 'row_id',
+		type: 'ROWID',
+		primaryKey: false,
+		unique: false,
+		nullable: false,
+		generated: 'ALWAYS',
+		isActivated: true,
+	});
+
+	assert.equal(columnDefinition, '"row_id" ROWID NOT NULL GENERATED ALWAYS');
+});
+
+void test('places NOT NULL before a column default', () => {
+	const columnDefinition = ddlProvider.convertColumnDefinition({
+		name: 'count',
+		type: 'INTEGER',
+		primaryKey: false,
+		unique: false,
+		nullable: false,
+		default: 0,
+		isActivated: true,
+	});
+
+	assert.equal(columnDefinition, '"count" INTEGER NOT NULL WITH DEFAULT 0');
+});
+
+void test('keeps inline key constraints after identity generation', () => {
+	const columnDefinition = ddlProvider.convertColumnDefinition({
+		name: 'id',
+		entityName: 'sample',
+		type: 'INTEGER',
+		primaryKey: true,
+		unique: false,
+		nullable: false,
+		isActivated: true,
+		identity: {
+			generated: 'ALWAYS',
+			start: 1,
+		},
+	});
+
+	assert.equal(
+		columnDefinition,
+		'"id" INTEGER NOT NULL GENERATED ALWAYS AS IDENTITY (START WITH 1) CONSTRAINT "sample_pk" PRIMARY KEY',
+	);
+});