Crate sql_type

source ·
Expand description

Crate for typing SQL statements.

use sql_type::{schema::parse_schemas, type_statement, TypeOptions,
    SQLDialect, SQLArguments, StatementType};
let schemas = "
    CREATE TABLE `events` (
      `id` bigint(20) NOT NULL,
      `user` int(11) NOT NULL,
      `message` text NOT NULL
    );";

let mut issues = Vec::new();

// Compute terse representation of the schemas
let schemas = parse_schemas(schemas,
    &mut issues,
    &TypeOptions::new().dialect(SQLDialect::MariaDB));
assert!(issues.is_empty());

let sql = "SELECT `id`, `user`, `message` FROM `events` WHERE `id` = ?";
let stmt = type_statement(&schemas, sql, &mut issues,
    &TypeOptions::new().dialect(SQLDialect::MariaDB).arguments(SQLArguments::QuestionMark));
assert!(issues.is_empty());

let stmt = match stmt {
    StatementType::Select{columns, arguments} => {
        assert_eq!(columns.len(), 3);
        assert_eq!(arguments.len(), 1);
    }
    _ => panic!("Expected select statement")
};

Modules§

  • schema
    Facility for parsing SQL schemas into a terse format that can be used for typing statements.

Structs§

  • FullType
    Represent a type with not_null information
  • Issue
    An issue encountered during parsing, or later stages
  • SelectTypeColumn
    A column in select
  • TypeOptions
    Options used when typing sql or parsing a schema

Enums§

Functions§