Struct Schema 

pub struct Schema<'a> { /* private fields */ }

Emits DDL and runs it.

Implementations

impl<'a> Schema<'a>

pub fn new(db: &'a Database) -> Self

pub async fn create( &self, table: &str, define: impl FnOnce(&mut Table), ) -> Result<()>

Create a table.

pub async fn alter( &self, table: &str, define: impl FnOnce(&mut Table), ) -> Result<()>

Add or drop columns on an existing table.

pub async fn drop(&self, table: &str) -> Result<()>

pub async fn rename(&self, from: &str, to: &str) -> Result<()>

pub async fn has_table(&self, table: &str) -> Result<bool>

Whether a table exists — how the migration runner decides what to do.

pub async fn has_column(&self, table: &str, column: &str) -> Result<bool>