Plan A: If $somecondition can be done in SQL, then do the whole process in a single multi-table UPDATE statement. Plan B: Fetch the stuff you need from mytable, put it into a PHP array of arrays, then do the update loop. Plan C: Walk thru mytable 100 rows at a time. That...
Use aWHILELoop in a Stored Procedure to Loop Through All Rows of a MySQL Table TheWHILEloop is a control flow construct in MySQL that allows a block of code to be executed repeatedly as long as a specified condition is true. This loop is particularly useful when the exact number of itera...
what i'd like to do is limit the loop to 10 results, and the reason i'm not using LIMIT in my mysql query, is because i need to get both all the results, as well as reduce the results in my loop. if i were to use LIMIT in my mysql query then i'd need to query the data...
In this case, it is necessary to create a new index file. Do so as follows: Move the data file to a safe place. Use the table description file to create new (empty) data and index files: $> mysql db_name mysql> SET autocommit=1; mysql> TRUNCATE TABLE tbl_name; mysql> quit ...
Use the mysql client to query HAProxy. root@haproxy# mysql -h 127.0.0.1 -u haproxy_root -p -e"SHOW DATABASES" The "-h" option has to be present with the loopback IP address. Omitting it or usinglocalhostwill make the MySQL client connect to themysql.sockfile which will fail. ...
InnoDB: page_cleaner: 1000ms intended loop took 4013ms. The settings might not be optimal. (flushed=1438 and evicted=0, during the time.) The problem is typical of a MySQL instance where you have a high rate of changes to the database. By running your 5GB import, you're creating dirt...
Class.forName("com.mysql.jdbc.Driver"); To register a JDBC driver in your Java program, you can use the Class.forName() method from the java.lang.Class class. This method loads the JDBC driver class and registers it with the DriverManager, allowing you to establish a connection to the M...
Binary log file position-based replication is viable for many use cases, but this method can become clunky in more complex setups. This led to the development of MySQL’s newer native replication method, which is sometimes referred to astransaction-based replication. This method involves creating...
ADD Root Node to XML in C# add string data to IList collection Add strings to list and expiry each item in certain period of time add text file data into arraylist Add Text to a Textbox without removing previous text Add Two Large Numbers Using Strings - Without Use of BigInt Add user...
I want to use a cursor in stored procedure as nested stored procedure call as below code. Is it possible? Could you correct me how to write code? --- declare cursor cursor for SELECT proc_sample_recordset('param'); DECLARE CONTINUE HANDLER FOR NOT FOUND SET quitLoop = TRUE; OPEN...