Question

我想基于数组过滤数据，类似于＆＃34; in＆＃34;查询中的关键字：

SELECT count(*) as number_of_records, 
       count(CASE WHEN result = 'SUCCESS' THEN 1 END) as successful_builds_no,
       min(CASE WHEN result = 'FAILURE' THEN 0 ELSE 1 END) as is_success,
       min(duration) as best_duration,
       max(build_date) as build_date     
FROM   mdl_selenium_results
WHERE build_date in ('2014-03-13', '2014-03-12')
GROUP BY build_date

如何使用Moodle DB api实现这一目标？

Answer 1

如果要在Moodle中创建一个SQL查询，可以使用IN关键字，就像在示例中一样。

或者，为了使它更具交叉数据库兼容性，并且当列表中只有一个项目时使查询运行得更快，您可以写：

list($dsql, $dparam) = $DB->get_in_or_equal(array('2014-03-13', '2014-03-12'), SQL_PARAMS_NAMED);

$sql = "SELECT count(*) as number_of_records, 
       count(CASE WHEN result = 'SUCCESS' THEN 1 END) as successful_builds_no,
       min(CASE WHEN result = 'FAILURE' THEN 0 ELSE 1 END) as is_success,
       min(duration) as best_duration,
       max(build_date) as build_date     
FROM   {selenium_results}
WHERE build_date $dsql
GROUP BY build_date";

$result = $DB->get_records_sql($sql, $dparams);

或者，如果您只想获取给定表中的所有匹配记录（然后担心在PHP中进行计算），您可以写：

$result = $DB->get_records_list('selenium_results', 'build_date', array('2014-03-13', '2014-03-12'));

（我没有运行上面的任何代码，所以对任何拼写错误道歉）

如何使用Moodle DB API调用在Where子句中指定数组？

1 个答案: