feat(schema): col.defaultCurrentTimestamp(precision?) [REOPENED]

[igalklebanov]

Hey 👋

reopens #1175 by @austinwoon (was accidentally closed when the 0.28 branch was destroyed).

Closes #1162

This PR adds:

db.createTable('table')
  .addColumn(
    'created_at', 
    'timestamptz', 
    (col) => col.defaultCurrentTimestamp() // <---------- this. outputs as `default current_timestamp`
  )
  .execute()

As a shorthand of:

col.defaultTo(sql`current_timestamp`)

You can also:

col.defaultCurrentTimestamp(6) // outputs as `default current_timestamp(6)`

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Name	Status	Preview	Comments	Updated (UTC)
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commit: 3479909

[Copilot]

Pull Request Overview

This PR introduces a shorthand method, defaultCurrentTimestamp, to simplify setting a column’s default value to the current timestamp with optional precision.

• Adds a defaultCurrentTimestamp method to column-definition builders.
• Updates tests to use defaultCurrentTimestamp instead of defaultTo(sqlcurrent_timestamp).
• Introduces a new date-parser utility with a TimestampPrecision type and corresponding parsing function.

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

File	Description
test/node/src/schema.test.ts	Replaces previous defaultTo usage with defaultCurrentTimestamp.
src/schema/column-definition-builder.ts	Adds the defaultCurrentTimestamp method and updates documentation.
src/parser/date-parser.ts	Implements parseCurrentTimestamp and defines TimestampPrecision.
src/index.ts	Exports TimestampPrecision from the date-parser.