问题
I have some query that I need to pass to another query using query builder
$query = DB::table('table')->whereIn('some_field', [1,2,30])->toSql();
Model::join(DB::raw("({$query}) as table"), function($join) {
$join->on('model.id', '=', 'table.id');
})
which should results with
Select * from model join (select * from table where some_field in (1,2,30)) as table on model.id = table.id
but the bindings are not passed, which force me to do
$query = DB::table('table')->whereRaw('some_field in ('. join(',', [1,2,30]) .')')->toSql();
what can be unsafe at times. How can I get the query with bindings?
回答1:
Check out the getBindings() method on the Builder class
getBindings()
$query = DB::table('table')->whereIn('some_field', [1,2,30]);
$sql = $query->toSql();
$bindings = $query->getBindings();
回答2:
public static function getQueries(Builder $builder)
{
$addSlashes = str_replace('?', "'?'", $builder->toSql());
return vsprintf(str_replace('?', '%s', $addSlashes), $builder->getBindings());
}
回答3:
Laravel now offers debugging directly on your Builder!!!
https://laravel.com/docs/queries#debugging
\App\User::where('age', '18')->dump();
\App\User::where('age', '18')->dd();
Outputs
"select * from `users` where `age` = ?"
[
0 => "18"
]
回答4:
You can define below code block as helper function and use wherever required. It will bind numeric as well as string value with quotations.
public static function getSqlWithBindings($query)
{
return vsprintf(str_replace('?', '%s', $query->toSql()), collect($query->getBindings())->map(function ($binding) {
return is_numeric($binding) ? $binding : "'{$binding}'";
})->toArray());
}
Example:
$query = Document::where('model', 'contact')->where('model_id', '1');
dd(Document::getSqlWithBindings($query));
Output:
"select * from `document` where `model` = 'contact' and `model_id` = 1"
回答5:
If you want to get an executed query including bindings from the query log:
\DB::enableQueryLog();
\DB::table('table')->get();
dd(str_replace_array('?', \DB::getQueryLog()[0]['bindings'],
\DB::getQueryLog()[0]['query']));
回答6:
Since the other answers do not properly quote the expressions, here is my approach. It uses the escaping function, that belongs to the current database connection.
It replaces the question marks one by one with the corresponding binding, which is retrieved from $bindings via array_shift(), consuming the array in the process. Note, that $bindings has to be passed by reference for this to work.
function getSql($query)
{
$bindings = $query->getBindings();
return preg_replace_callback('/\?/', function ($match) use (&$bindings, $query) {
return $query->getConnection()->getPdo()->quote(array_shift($bindings));
}, $query->toSql());
}
回答7:
The following function ensures the resulting SQL doesn't confuse bindings with columns by enclosing the ? to be '?'
public static function getFinalSql($query)
{
$sql_str = $query->toSql();
$bindings = $query->getBindings();
$wrapped_str = str_replace('?', "'?'", $sql_str);
return str_replace_array('?', $bindings, $wrapped_str);
}
回答8:
You can do something like this:
$escapedBindings = array();
foreach($query->getBindings() as $item) {$escapedBindings[] = '"'.$item.'"';}
$sql_with_bindings = Str::replaceArray('?', $escapedBindings, $query->toSql());
回答9:
This is a very old question (2015), but since this is the first Google result I got I think it's worth to give my solution as well, in case it's useful for the next person.
Eloquent (5.7 onwards I think, I haven't tested more recent or earlier versions) has a method to change a Builder's from to wrap a subquery:
# Taken from Illuminate/Database/Query/Builder.php - Line 272
public function fromSub($query, $as) {
[$query, $bindings] = $this->createSub($query);
return $this->fromRaw('('.$query.') as '.$this->grammar->wrapTable($as), $bindings);
}
This however requires an already existing instance of \Illuminate\Database\Query\Builder. In order to make an empty one, you can do:
use Illuminate\Database\Capsule\Manager as DB;
$fancy = DB::table("videogames")->where("uses_sdl2", 1);
$empty = DB::table(null);
# Wrap the fancy query and set it as the "from" clause for the empty one
# NOTE: the alias is required
$empty = $empty->fromSub($fancy, "performant_games");
This will warranty that bindings are treated correctly, since they'll be handled by Eloquent itself.
回答10:
I created this function. It is partial, might be parameters which are not covered, for me it was enough.
More than welcomed to add your improvements in a comment!
function getFullSql($query) {
$sqlStr = $query->toSql();
foreach ($query->getBindings() as $iter=>$binding) {
$type = gettype($binding);
switch ($type) {
case "integer":
case "double":
$bindingStr = "$binding";
break;
case "string":
$bindingStr = "'$binding'";
break;
case "object":
$class = get_class($binding);
switch ($class) {
case "DateTime":
$bindingStr = "'" . $binding->format('Y-m-d H:i:s') . "'";
break;
default:
throw new \Exception("Unexpected binding argument class ($class)");
}
break;
default:
throw new \Exception("Unexpected binding argument type ($type)");
}
$currentPos = strpos($sqlStr, '?');
if ($currentPos === false) {
throw new \Exception("Cannot find binding location in Sql String for bundung parameter $binding ($iter)");
}
$sqlStr = substr($sqlStr, 0, $currentPos) . $bindingStr . substr($sqlStr, $currentPos + 1);
}
$search = ["select", "distinct", "from", "where", "and", "order by", "asc", "desc", "inner join", "join"];
$replace = ["SELECT", "DISTINCT", "\n FROM", "\n WHERE", "\n AND", "\n ORDER BY", "ASC", "DESC", "\n INNER JOIN", "\n JOIN"];
$sqlStr = str_replace($search, $replace, $sqlStr);
return $sqlStr;
}
回答11:
Output to the log all queries with inserted bindings sorted from the slowest query to the fastest:
\DB::enableQueryLog();
// Put here your queries
$query = DB::table('table')->whereIn('some_field', [1,2,30]);
$query2 = DB::table('table2')->where('some_field', '=', 10);
$logQueries = \DB::getQueryLog();
usort($logQueries, function($a, $b) {
return $b['time'] <=> $a['time'];
});
foreach ($logQueries as $item) {
\Log::info(str_replace_array('?', $item['bindings'], $item['query']));
\Log::info($item['time']. ' ms');
}
回答12:
It is all explained here..... https://ajcastro29.blogspot.com/2017/11/laravel-join-derived-tables-properly.html
I created a scope query for that thing. I think it can also be in macros..
public function scopeJoinDerived($query, $derivedQuery, $table, $one, $operator = null, $two = null, $type = 'inner', $where = false)
{
$query->join(DB::raw("({$derivedQuery->toSql()}) as `{$table}`"), $one, $operator, $two, $type, $where);
$join = last($query->getQuery()->joins);
$join->bindings = array_merge($derivedQuery->getBindings(), $join->bindings);
return $query;
}
来源：https://stackoverflow.com/questions/27314506/laravel-how-to-get-query-with-bindings