Hello i have a database which users make groups or send messages to other registered, in our project, users. So you have messages as M,users as U, groups as G. So you want to show all updates that happen in these tables WHERE (uid - thats the user id column on U table.). All tables have CREATED as datetime column. Users yable is uid on messages is uid_fk and to groups uid_fk. Can i do that with a single statement or do i need to do anything else?

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Hello i am getting an error on a CASE WHEN THEN syntax on my mySql SELECT DISTINCT u.uid,c.c_id,u.name,u.profile_pic,u.username,u.email,c.time FROM conversation c, users u, conversation_reply r CASE WHEN c.user_one = '99' THEN c.user_two = u.uid WHEN c.user_two = '99' THEN c.user_one= u.uid END AND ( c.user_one ='99' OR c.user_two ='99' ) AND u.status='1' AND c.c_id=r.c_id_fk AND u.uid<>'1'ORDER BY c.time DESC LIMIT 15 #1064 - You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'CASE WHEN c.user_one = '99' THEN c.user_two = u.uid WHEN c.user_t' at …

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Hi guys, This is my first post and so glad to start sharing the knowledge. I am using Mysql database with VB.NET and I have this code : Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click Dim str As String = "Server=localhost;Port=3306;Database=testdb;Uid=root;Pwd=password" Using con As New MySqlConnection(str) Dim query As String = "select * from testdata where rfid_tag='" & TextBox3.Text & "' and Date_serve<= '" & Date.Now.ToString("yyyy-MM-dd ") & "' and Start_Time<= '" & Date.Now.ToString("HH:mm:ss ") & "' and End_Time>= '" & Date.Now.ToString("HH:mm:ss ") & "' or amount_serve='' " Dim cm As New MySqlCommand(query, con) con.Open() Dim rd …

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What's the difference between LCASE() and LOWER() in MySQL? I found places on the web that said they're similar but not a synonym for each other, so I'm not sure what the differences are?

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Previously used winXP operating system running normally (very good) when switching to win7 operating system, this error, read errors from the SQL Server data, what is the error ? http://www.mediafire.com/view/4q5ux6e66ds4avb/ErrorOpenSQL.jpg/file

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I need help with implementing MySQL transactions with PHP. Specifically, I'm confused between the flags `WITH CONSISTENT SNAPSHOT`, `READ WRITE`, and `READ ONLY`, what their differences are, and how they relate to table locking. I already read the MySQL reference manual but I'm still confused.

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If a bulk MySQL insert takes 5 minutes to complete, and one of the columns in the table is a TIMESTAMP column with a default value of CURRENT TIMESTAMP, will the timestamps of the rows that were inserted be reflective of the entire 5 minutes, or will they all default to the same timestamp from beginning or the end of the query? The bulk insert exists within a transaction.

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Hi, I have installed Oracle 11g (latest version 11.2.0.1.0) on my system. During the installation it didnt ask me to set username or any password. I'm unable to start sql plus because i dont have the username and password. Can anyone tell me what is the default username and password or what is the default password for SYS or SYSTEM? Thanks, VC

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I want to create a php function that i can use to get a particular user details and display the info gotten in my ProfileActivity when a user profile is been clicked in my app. so i wrote this php code to get user details from my database but when i run the code nothing is returned in my browser. please what could be causing this? <?php require("config.php"); function getdetails($id) { $array = array(); $q = mysql_query("SELECT * FROM 'users' WHERE 'id'=".$id); while($r = mysql_fetch_assoc($q)) { $array['id'] = $r['id']; $array['name'] = $r['name']; } return $array; } function getId($name) { $q …

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hello everyone im taking database course this year and it's my first time to take it so i need help how to draw a ERD for following busniess case AND IF there many to many relation how i can establish a new relation ! Entity (Artist ) Attribute : death , DOB, the nationality. ---------------- Entity (museum ) Attribute: location , specialty . --------------- Entity: (paintings) Attribute: size of canvas, year of painted, tittle , style ----------------- Relation between Artist and paintings : Paint Relation between paintings and museum : Display An art researcher has asked you to design a …

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Hello! I have a problem with a MySQL database that I haven’t been able to solve no matter how much I tried, either with internet guides or with free tools. I really don’t want to pay hundreds of dollars to a company so please, if anyone knows of a solution, help me because I’m desperate. I was running XAMPP 7.1.22 where I had said database and I decided to install XAMPP 7.2.10 without backing up the database. After that, the site wasn’t working so I figured the problem was the database. And indeed PHPMyAdmin wouldn’t recognize it. I reinstalled the …

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I read several forums questions related to SQL database corruption. As we all know, backup is the best way to repair SQL database. What a user will do when backup copy is also corrupted or updated bacjup is not available? Is DBCC CHECKDB Repair option (Repair_Allow_Data_Loss) safe?

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Hi to all! I'm fairly new to using High availability group and i've been having issues with storage space from my Logs drive from my primary server.. I just want to know why is my Log file not shrinking after I do backups(Full) on the primary server.. also, another question.. can I do the backup on my secondary server before shrinking my Logs on the primary? the reason I want to do this because my primary server has a database primarily used for Production(MES) and I don't want any downtime on their part.. Thanks in Advance.

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Hi Guys! I have a website but we don't host in GoDaddy or any hosting website, because we use SQL database. And we have a large database that we are using , the website is for productions. We store a lot of data. We use the IP address because we port forward it so that we can use it anywhere. Now, we are worried because we are exposing our IP address outside, and it might be the reason for hackers or any attacks to come to us. Can you help me or give me an Idea how can I change …

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Hello i have a project that uses firebase but i want to make connect to my MySql database on xampp. Any idea what to do?

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Hi there, i'm trying to create a class schedule for subjects where students can view what's available and later on book a position in a class. Here are the images of what i'm trying to achieve: https://imgur.com/a/Ie4XO I want to retrieve the table name and ID of students that have booked a place in a class from the subject table and show them in the main table in the correct time slot. Is there any online resouces which can help me achieve this? i have already created the tables in my database, the tables but having issues on how to …

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When i run the statement below i am getting a number of xxx.xxxx can anyone help me change this to two DP? (SELECT sum(oht_net) FROM order_header_total JOIN order_header ON oh_id = oht_oh_id WHERE oh_cd_id = cd_id AND oh_sot_id = 1 AND DATEPART(yyyy, oh_datetime) = (SELECT DATEPART(yyyy, GETDATE()) -1))

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The End.