sql批量更新如何提升执行效率代码优化

 

// 批量更新

try {

$tableName = self::CUSTOMER_PRIVILEGE_CONFIG; // 表名
$firstRow = current($multipleData);

$updateColumn = array_keys($firstRow);
// 默认以id为条件更新，如果没有ID则以第一个字段为条件
$referenceColumn = isset($firstRow['id']) ? 'id' : current($updateColumn);
unset($updateColumn[0]);
// 拼接sql语句
$updateSql = "UPDATE " . $tableName . " SET ";
$sets = [];
$bindings = [];
foreach ($updateColumn as $uColumn) {
$setSql = "`" . $uColumn . "` = CASE ";
foreach ($multipleData as $vo) {
$setSql .= "WHEN `" . $referenceColumn . "` = ? THEN ? ";
$bindings[] = $vo[$referenceColumn];
$bindings[] = $vo[$uColumn];
}
$setSql .= "ELSE `" . $uColumn . "` END ";
$sets[] = $setSql;
}
$updateSql .= implode(', ', $sets);
$whereIn = collect($multipleData)->pluck($referenceColumn)->values()->all();
$bindings = array_merge($bindings, $whereIn);
$whereIn = rtrim(str_repeat('?,', count($whereIn)), ',');
$updateSql = rtrim($updateSql, ", ") . " WHERE `" . $referenceColumn . "` IN (" . $whereIn . ")";
// 传入预处理sql语句和对应绑定数据
DB::update($updateSql, $bindings);
// 存入redis缓存
array_map(function ($items){
Redis::hset(self::CUSTOMER_PRIVILEGE_CONFIG, $items['customer_config_key'], $items['user_ids']);
},$multipleData);
} catch (\Exception $e) {
return false;
}
}