sql array loop

PHP multi-dimensional array problem, a little difficult! Two arrays are as follows: // Registration information $ array1 = array (0 => array ('day' => '2017-3-7 ', // registration date 'data' => array (0 => array ('uid' => '123 '), 1 => array

Preface writes The for/in loop is the so-called enhanced for loop in JDK5.0, which traverses the array and the set, and uses it to make your code shorter and more refined. Here is a description of the following: Traditional for loop and enhanced

Combined arrays are previously called PLSQL tables. Union arrays cannot be used in tables. They can only be used as structures for programming. Union Arrays can only be accessed in PLSQL A union array is previously called a PL/SQL table. Union

*sql optimization based on ORACLE11GR2 reading notes * Third, cursor in OracleThe cursor in Oracle is a vector of SQL parsing and execution in an Oracle database and is a data structure for C (Oracle is written in C).There are two types of cursor in

Since PHP was produced with the 1994, its syntax was mixed with C, Java, Perl and some of his own programming syntax. So, before the Java-based students, learning will not be too laborious. 1. Android Programmer learn PHP Development (3)-loop

PHP Implementation database backup exported to SQL 1. First you have to get the tables in the database, the function mysql_list_tables (), and then you can save all the table names you get to an array. 2. Show create table name can get table

PHP_MySQL tutorial-the next day while loop and the first page of database operations while loop In this lesson, we will continue to use PHP and MySQL to write some simple and useful pages. We started to display the data in the database from the

Which one can check whether this nested loop array is incorrect? Function & nbsp; get_number_list ($ cat_id) {& nbsp; $ SQL $ GLOBALS [db]-& gt; query (select & nbsp; * & nbsp; from & nbsp ;. $ GLOBALS [db]-& gt; table (dept_category ). & nbsp;

Php array and simple tutorial on using instances (easy to understand ). Note the text in the remarks section ~ Copy the code as follows :? Php instantiate an array $ arrayarray (). The array consists of the following two parts: array (key name [key]

Chapter 2 procedural performance tuning of PL/SQL applications I. Reasons for PL/SQL Performance problems When the execution efficiency of PL/SQL-based applications is low, it is usually caused by poor SQL statements and programming methods,