feat: initial kysely migration file (#17678)

server/test/sql-tools/index-with-expression.ts

@@ -0,0 +1,47 @@
+import { Column, DatabaseSchema, Index, Table } from 'src/sql-tools';
+
+@Table()
+@Index({ expression: '"id" IS NOT NULL' })
+export class Table1 {
+  @Column({ nullable: true })
+  column1!: string;
+}
+
+export const description = 'should create an index based off of an expression';
+export const schema: DatabaseSchema = {
+  name: 'postgres',
+  schemaName: 'public',
+  functions: [],
+  enums: [],
+  extensions: [],
+  parameters: [],
+  tables: [
+    {
+      name: 'table1',
+      columns: [
+        {
+          name: 'column1',
+          tableName: 'table1',
+          type: 'character varying',
+          nullable: true,
+          isArray: false,
+          primary: false,
+          synchronize: true,
+        },
+      ],
+      indexes: [
+        {
+          name: 'IDX_376788d186160c4faa5aaaef63',
+          tableName: 'table1',
+          unique: false,
+          expression: '"id" IS NOT NULL',
+          synchronize: true,
+        },
+      ],
+      triggers: [],
+      constraints: [],
+      synchronize: true,
+    },
+  ],
+  warnings: [],
+};