This article illustrates the CURD operation of the Laravel Framework Query Constructor. Share it for your reference, as follows:

Add

// Insert 1 Bar data
public function insert(){
  $rs = DB::table('student')->insert([
    'name' => 'Kit',
    'age' => 12
  ]);
  dd($rs);  //true
}

// Insert 1 Bar data and return self-increment ID
public function insert(){
  $id = DB::table('student')->insertGetId([
    'name'=>'Tom',
    'age'=>11
  ]);
  dd($id);  //1004
}

// Insert multiple pieces of data
public function insert(){
  $rs = DB::table('student')->insert([
    ['name'=>'Ben','age'=>22],
    ['name'=>'Jean','age'=>23]
  ]);
  dd($rs);//true
}

Update

// Update 1 Bar data
public function update(){
  $rs = DB::table('student')
    ->where('id',1003)
    ->update(['age'=>10]);
  dd($rs);//1 Returns the number of rows affected
}

// Self-updating
public function update(){
  // All ages plus 1
  $rs = DB::table('student')->increment('age');
  dd($rs);//5 Returns the number of rows affected
  //ID For 1001 Age of plus 3
  $rs = DB::table('student')
    ->where('id',1001)
    ->increment('age',3);
  dd($rs);//1 Returns the number of rows affected
}

// Self-subtracting renewal
public function update(){
  // All ages plus 1
  $rs = DB::table('student')->decrement('age');
  dd($rs);//5 Returns the number of rows affected
  //ID For 1001 Age of plus 3
  $rs = DB::table('student')
    ->where('id',1001)
    ->decrement('age',3);
  dd($rs);//1 Returns the number of rows affected
}

//1001 Age plus 3 And the gender should be changed to 11
public function update(){
  $rs = DB::table('student')
    ->where('id',1001)
    ->increment('age',3,['sex'=>11]);
  dd($rs);//1 Returns the number of rows affected
}

Delete

// Delete ID For 1006 Data of
public function delete(){
  $rs = DB::table('student')
    ->where('id',1006)
    ->delete();
  dd($rs);//1 Returns the number of rows affected
}

// Delete ID Greater than 1003 Data of
public function delete(){
  $rs = DB::table('student')
    ->where('id','>',1003)
    ->delete();
  dd($rs);//2 Returns the number of rows affected
}

// Empty the data table and return nothing
DB::table('student')->truncate();

Query

get first pluck select

// Insert 1 Bar data and return self-increment ID
public function insert(){
  $id = DB::table('student')->insertGetId([
    'name'=>'Tom',
    'age'=>11
  ]);
  dd($id);  //1004
}

0

// Insert 1 Bar data and return self-increment ID
public function insert(){
  $id = DB::table('student')->insertGetId([
    'name'=>'Tom',
    'age'=>11
  ]);
  dd($id);  //1004
}

1

// Insert 1 Bar data and return self-increment ID
public function insert(){
  $id = DB::table('student')->insertGetId([
    'name'=>'Tom',
    'age'=>11
  ]);
  dd($id);  //1004
}

2

// Query name , age , sex Field
$rs = DB::table('student')->select('name','age','sex')->get();

Aggregate function

// Insert 1 Bar data and return self-increment ID
public function insert(){
  $id = DB::table('student')->insertGetId([
    'name'=>'Tom',
    'age'=>11
  ]);
  dd($id);  //1004
}

4

For more readers interested in Laravel related content, please check the topics on this site: “Introduction and Advanced Tutorial of Laravel Framework”, “Summary of Excellent Development Framework of php”, “Introduction Tutorial of php Object-Oriented Programming”, “Introduction Tutorial of php+mysql Database Operation” and “Summary of Common Database Operation Skills of php”

I hope this article is helpful to the PHP programming based on Laravel framework.