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SqlStatementResult::fetchOne — Get single row
Fetch one row from the result set.
本函数还未编写文档，仅有参数列表。
此函数没有参数。
The result, as an associative array. In case there is not any result, null will be returned.
Example #1 mysql_xdevapi\SqlStatementResult::fetchOne() example
<?php
$session = mysql_xdevapi\getSession("mysqlx://user:password@localhost");
$session->sql("DROP DATABASE IF EXISTS dbtest")->execute();
$session->sql("CREATE DATABASE dbtest")->execute();
$session->sql("CREATE TABLE dbtest.workers(name text, age int, job text)")->execute();
$session->sql("INSERT INTO dbtest.workers values ('John', 42, 'bricklayer'), ('Sam', 33, 'carpenter')")->execute();
$schema = $session->getSchema("dbtest");
$table = $schema->getTable("workers");
$rows = $session->sql("SELECT * FROM dbtest.workers")->execute()->fetchOne();
print_r($rows);
?>
以上例程的输出类似于：
Array
(
[name] => John
[age] => 42
[job] => bricklayer
)