Function extract_table_factor_name_alias

nodedb-sql/src/planner/merge.rs:320–333

(
    factor: &ast::TableFactor,
)

// ── Helpers ────────────────────────────────────────────────────────────────

pub(super) fn extract_table_factor_name_alias(
    factor: &ast::TableFactor,
) -> Result<(String, Option<String>)> {
    match factor {
        ast::TableFactor::Table { name, alias, .. } => {
            let table_name = normalize_object_name_checked(name)?;
            let alias_str = alias.as_ref().map(|a| normalize_ident(&a.name));
            Ok((table_name, alias_str))
        }
        other => Err(SqlError::Unsupported {
            detail: format!("MERGE target must be a plain table name, not: {other}"),
        }),
    }
}