Module dialect 

What differs between one SQL database and another.

The query builder, the schema builder and the migrator are written once; a Dialect supplies the handful of things the databases genuinely disagree about — how an identifier is quoted, what a bound parameter looks like, what a column type is called, and how a generated key is read back.

Everything a dialect answers is pure string generation, so all three are tested without a database anywhere near them.

Structs

MySql

Postgres

SqlServer

Enums

ColumnType

A column type as the schema builder thinks of it, before any database has had an opinion.

ReturningStyle

How a database hands back the key it generated for an inserted row.

Traits

Dialect

The differences between one SQL database and another.

Functions

by_name

Build a dialect from its name.

quote_qualified

Quote a possibly-qualified name one part at a time.

validate_identifier

Reject anything that is not a plain identifier.