surrealdb-sql 3.3.2

A scalable, distributed, collaborative, document-graph database, for the realtime web
Documentation 
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use surrealdb_types::{SqlFormat, ToSql, write_sql};

use crate::statements::alter::AlterKind;
use crate::{CoverStmts, Expr, Literal};

#[derive(Clone, Debug, Eq, PartialEq)]
pub struct AlterIndexStatement {
	pub name: Expr,
	pub table: Expr,
	pub if_exists: bool,
	pub prepare_remove: bool,
	pub comment: AlterKind<String>,
}

impl Default for AlterIndexStatement {
	fn default() -> Self {
		Self {
			name: Expr::Literal(Literal::None),
			table: Expr::Literal(Literal::None),
			if_exists: false,
			prepare_remove: false,
			comment: AlterKind::None,
		}
	}
}

impl ToSql for AlterIndexStatement {
	fn fmt_sql(&self, f: &mut String, fmt: SqlFormat) {
		write_sql!(f, fmt, "ALTER INDEX");
		if self.if_exists {
			write_sql!(f, fmt, " IF EXISTS");
		}
		write_sql!(f, fmt, " {} ON {}", CoverStmts(&self.name), CoverStmts(&self.table));

		if self.prepare_remove {
			write_sql!(f, fmt, " PREPARE REMOVE");
		}
		match self.comment {
			AlterKind::Set(ref x) => {
				use common::fmt::QuoteStr;
				write_sql!(f, fmt, " COMMENT {}", QuoteStr(x))
			}
			AlterKind::Drop => write_sql!(f, fmt, " DROP COMMENT"),
			AlterKind::None => {}
		}
	}
}