Struct RenameUserStatement 

pub struct RenameUserStatement {
    pub renames: Vec<(String, String)>,
}

RENAME USER statement builder (MySQL only)

This struct provides a fluent API for building RENAME USER statements. This is a MySQL-specific feature.

MySQL

MySQL RENAME USER supports renaming multiple users in a single statement: RENAME USER old1 TO new1, old2 TO new2

Examples

Rename a single user:

use reinhardt_query::dcl::RenameUserStatement;

let stmt = RenameUserStatement::new()
    .rename("old_user@localhost", "new_user@localhost");

Rename multiple users at once:

use reinhardt_query::dcl::RenameUserStatement;

let stmt = RenameUserStatement::new()
    .rename("user1@localhost", "renamed1@localhost")
    .rename("user2@localhost", "renamed2@localhost");

Fields

renames: Vec<(String, String)>

List of (old_name, new_name) pairs

Implementations

impl RenameUserStatement

pub fn new() -> Self

Create a new RENAME USER statement

Examples

use reinhardt_query::dcl::RenameUserStatement;

let stmt = RenameUserStatement::new();

pub fn rename( self, old_name: impl Into<String>, new_name: impl Into<String>, ) -> Self

Add a rename pair

Examples

use reinhardt_query::dcl::RenameUserStatement;

let stmt = RenameUserStatement::new()
    .rename("old_user@localhost", "new_user@localhost");

pub fn renames(self, pairs: Vec<(String, String)>) -> Self

Set all rename pairs at once

Examples

use reinhardt_query::dcl::RenameUserStatement;

let stmt = RenameUserStatement::new()
    .renames(vec![
        ("old1@localhost".to_string(), "new1@localhost".to_string()),
        ("old2@localhost".to_string(), "new2@localhost".to_string()),
    ]);

pub fn validate(&self) -> Result<(), String>

Validate the RENAME USER statement

Validation Rules

1. At least one rename pair must be specified
2. Old and new names cannot be empty

Examples

use reinhardt_query::dcl::RenameUserStatement;

let stmt = RenameUserStatement::new()
    .rename("old_user", "new_user");

assert!(stmt.validate().is_ok());

use reinhardt_query::dcl::RenameUserStatement;

let stmt = RenameUserStatement::new();
assert!(stmt.validate().is_err());

Trait Implementations

impl Clone for RenameUserStatement

fn clone(&self) -> RenameUserStatement

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for RenameUserStatement

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for RenameUserStatement

fn default() -> RenameUserStatement

Returns the “default value” for a type.