database

问题 I am stuck with the installation of TPC-E EGen on Mac OS X (or Linux). I have downloaded the workload generator from TPC website : www.tpc.org/tpce/egen-download-request.asp but I failed to build it. When using the following command for building the utilities: cd Utilities/prj/GNUMake/ make I receive the following error: ../../prj/GNUMake/Makefile.EGenUtilities:136: ../../obj/DateTime.d: No such file or directory ../../prj/GNUMake/Makefile.EGenUtilities:136: ../../obj/EGenVersion.d: No such

问题 I want to notify users of changes on a site. Users are subscribed to different kinds of changes so I don't send all changes to all users. Here's what I am thinking: at t=0 (i.e. an if statement that checks that some table is empty) I basically have an SQL query that fetches the appropriate changes and mails to the appropriate users. I then populate a user_changes table which essentially stores what changes have been mailed to what users. Mailing is done with the php mail function Then at t>0

问题 I have a requirement like below. There are 70 tables and I have to build 70 queries from those 70 different tables depending on some condition. Let us say the table names are TAB_1,TAB_2,TAB_3.....,TAB_70 .The number of columns and data type of the columns are different in each table. I will get user input and I have to pass that value to an Oracle PL/SQL function or procedure GET_RESULT() and get the output in tabular format(same as we get when we run a query). Also, I have to show the

问题 Wordpress: I need to bulk change user roles in the database using the "user id". Something like: "Find users with id: 2827, 772, 234, 983, 14999 and set their rol to "custumer" I know that the roles are saved in the table "wp_usermeta" in the fields "meta_key=wp_capabilities" and "meta_value=a:1:{s:6:"editor";b:1;}". But I don't know how to create the slq query to search and replace them to change their values.See capture attached. 回答1: Easiest for me is to use phpmyadmin and edit one record.

问题 Wordpress: I need to bulk change user roles in the database using the "user id". Something like: "Find users with id: 2827, 772, 234, 983, 14999 and set their rol to "custumer" I know that the roles are saved in the table "wp_usermeta" in the fields "meta_key=wp_capabilities" and "meta_value=a:1:{s:6:"editor";b:1;}". But I don't know how to create the slq query to search and replace them to change their values.See capture attached. 回答1: Easiest for me is to use phpmyadmin and edit one record.

问题 Wordpress: I need to bulk change user roles in the database using the "user id". Something like: "Find users with id: 2827, 772, 234, 983, 14999 and set their rol to "custumer" I know that the roles are saved in the table "wp_usermeta" in the fields "meta_key=wp_capabilities" and "meta_value=a:1:{s:6:"editor";b:1;}". But I don't know how to create the slq query to search and replace them to change their values.See capture attached. 回答1: Easiest for me is to use phpmyadmin and edit one record.

问题 I want to use the session ID to identify the records in the database for anonymous user. When the user logs in, I would like to bind/relate the data to the user id. However, after logging in the session id is automatically changed by what I lose data binding with the user. How can I keep the session id after logging in order to bind the user id to the data, and then change the session id? 回答1: Upon authentication, session should be migrated, unless configured otherwise. Indeed, the session ID

问题 I want to use the session ID to identify the records in the database for anonymous user. When the user logs in, I would like to bind/relate the data to the user id. However, after logging in the session id is automatically changed by what I lose data binding with the user. How can I keep the session id after logging in order to bind the user id to the data, and then change the session id? 回答1: Upon authentication, session should be migrated, unless configured otherwise. Indeed, the session ID

问题 I want to use the session ID to identify the records in the database for anonymous user. When the user logs in, I would like to bind/relate the data to the user id. However, after logging in the session id is automatically changed by what I lose data binding with the user. How can I keep the session id after logging in order to bind the user id to the data, and then change the session id? 回答1: Upon authentication, session should be migrated, unless configured otherwise. Indeed, the session ID

问题 I am currently still learning PHP so some things I still struggle with. I have been taking it slowly and reading tutorials which has helped but I can't figure this one out. I have a database table (in mysql) with let's say, 100 urls. There is a column called 'url' and a second column 'text'. I already have the pagination code which works, so will also be using that. What I want to do is echo out the URLs (which are all in folder called blog in the root of my site), but use the text as the