SQL Decrement value - Drizzle Orm

import Section from "@mdx/Section.astro"; import IsSupportedChipGroup from "@mdx/IsSupportedChipGroup.astro"; import Prerequisites from "@mdx/Prerequisites.astro";

<Prerequisites> - Get started with [PostgreSQL](/docs/get-started-postgresql), [MySQL](/docs/get-started-mysql) and [SQLite](/docs/get-started-sqlite) - [Update statement](/docs/update) - [Filters](/docs/operators) and [sql operator](/docs/sql) </Prerequisites>

To decrement a column value you can use update().set() method like below:

<Section> ```ts copy {8} import { eq, sql } from 'drizzle-orm';

const db = drizzle(...)

await db .update(table) .set({ counter: sql${table.counter} - 1, }) .where(eq(table.id, 1));


```sql
update "table" set "counter" = "counter" - 1 where "id" = 1;

</Section>

Drizzle has simple and flexible API, which lets you easily create custom solutions. This is how you do custom decrement function:

import { AnyColumn } from 'drizzle-orm';

const decrement = (column: AnyColumn, value = 1) => {
  return sql`${column} - ${value}`;
};

await db
  .update(table)
  .set({
    counter1: decrement(table.counter1),
    counter2: decrement(table.counter2, 10),
  })
  .where(eq(table.id, 1));