How to delete content in table?

[Shunshine07]

I have multiple tables lets sat A, B and C.
There is no relation between them. I want to delete all the content of table A but table B and table C should be remain as it is.
Delete all content meaning the table should be empty with holding its schema.

I tried below code but it is not working,
Inside Modal of Table A
@writer async markThisDeleted() { await this.destroyPermanently() }

and that calling it explicitly in other file
const deleted = allContents.map(async (content: any) => await content.markThisDeleted()) database.batch(...deleted);

But this gives error that database,batch should be inside the writer.

If I write above code inside writer:
const deleted = allContents.map(async (content: any) => await content.markThisDeleted()) database.writer(writer => writer.batch(...deleted))

It gives waring that there are two writers in queue.

Moreover, there is not change in database. I can see all the content there.
Can anyone help me with this issue?

Versions:
Watermelon db : 0.24.0
React Native: 0.67.2

[skam22]

batch only works for prepare statements.

database.writer(async writer => {
  const batchedTasks = allContents.map(content => content.prepareMarkAsDeleted());
  await writer.batch(…batchedTasks);
})

if you wanted to call multiple writers without batching:

database.writer(async writer => {
  for (const content of allContents) {
    await writer.callWriter(() => content.markThisDeleted());
  }
})