Setting optimization and use of MySQL and SQL Server

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mysql

Some settings of the database

1. Open remote login

   grant all privileges on *.* to 'root'@'%' identified by 'wangshiyi';by And then there's the code 
   flush privileges; // Refresh the permissions 
   

   This command cannot be used in high-level databases. It should be executed step by step

   create user 'root'@'%' identified by 'wangshiyi'
   grant all privileges on *.* to 'root'@'%' with grant option;
   flush privileges; Refresh the permissions 
   

2. MySQL GROUP BY Error setting

	sql_mode = STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_ENGINE_SUBSTITUTION

restart mysql service

If there is still a problem with the stored procedure , Just modify it and save the stored procedure again ( For example, add a space after )
Remember that the configuration file needs to be changed in the future , Then transfer the database data

About database optimization

1. Add... Before the statement EXPLAIN
   After execution, it will tell you where the index is missing , The speed of execution

Some queries

1. The character set of the field does not match

$query->whereRaw("BINARY ".$v['field']." ".$v['condition']." BINARY '".$v['parameter'] . "'");

sql server

Some queries and usage

1. sql server Time sequence , Empty time in front

$query->orderByRaw("sort desc,case when status_date is null then 1 else 0 end desc,status_date desc")

2. laravel seqserver Stored procedure query error
   Report errors ：The active result for the query contains no fields.
   Add
   set nocount on
   for example

   ALTER PROCEDURE TESTPROC  
   @N INT  
   AS  
   BEGIN   
       SET NOCOUNT ON;   
       IF @N=1    
         RETURN 0;   
       SET NOCOUNT OFF;   
       PRINT '2';  
   END

php Query multiple result sets

3. Without reference

$dbh = DB::connection()->getPdo();
$stmt = $dbh->prepare("exec SP_ORDERSEC_GETORDERID");
$stmt->execute();
$stmt->nextRowset();// Next result set 
$rowset_2 = $stmt->fetch();
// It cannot be used without closing DB
$stmt = null;// close pdo Transaction connection 
$order_id = trim($rowset_2['ORDER_ID']);// The second result set 

2. With parameters

$dbh = DB::connection()->getPdo();
$stmt = $dbh->prepare("exec sp_demo_get ?,?,?,?");
$nReturnValue = " Parameters 1";
$strReturnValue = " Parameters 2";
$strSearchValue = " Parameters 3";
$strSearchValues = " Parameters 4";
$stmt->bindParam(1, $nReturnValue, \PDO::PARAM_STR);
$stmt->bindParam(2, $strReturnValue, \PDO::PARAM_STR);
$stmt->bindParam(3, $strSearchValue , \PDO::PARAM_STR);
$stmt->bindParam(4, $strSearchValues , \PDO::PARAM_STR);
$stmt->execute();
$stmt->nextRowset();
$rowset_2 = $stmt->fetch();
$stmt = null;// close pdo Transaction connection 
$order_id = trim($rowset_2['k_wage']);// Work order ID, The second result set