Referred to as the MySQLi extension or MySQL improved extension. Allows access to additional features provided in MySQL 4.1.3 and newer. It is included with PHP version 5 and later.

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1answer
15 views

Select last record from my table [closed]

I am new to SQL and PHP. I'm having a problem with selecting the last record from my table. I run the following query: SELECT * FROM 2521118 ORDER BY id DESC LIMIT 1 My table name is 2521118 and ...
0
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1answer
24 views

What is the best way to update a Production database with Test instance changes

I have deployed a Mysql database into Production. As I work on the next release of software I am making changes to a test database. I now need to update our Production system without losing the data ...
1
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1answer
71 views

Delete rows where matched value is twice as much

I'm trying to match two tables with two columns, table1 and table2. Each has id and price columns. I want the query to match each id and compare the price, then delete the row if the price in the ...
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1answer
23 views

How can I connect my other table using the mysqli_insert_id?

I've got a problem like this , I cannot get the id of the parent table . table_name : transaction_tbl - transaction_id -file_name -file_path -description table_name : transaction_details ...
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1answer
55 views

How to insert multiple values in a specific field in a table using mysqli?

I am working on a project and I I have a scenario like this: I have many field in my table : table_name : transaction_tbl -id -name -description -ref_number : text(datatype) In my inserting here is ...
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1answer
561 views

Warning: mysqli_connect(): (HY000/1045): Access denied for user 'root'@'localhost' (using password: NO)

On my local WAMP stack things are working perfectly. When I upload the database on GOdaddy.com, this error shows up. Warning: mysqli_connect(): (HY000/1045): Access denied for user ...
0
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1answer
48 views

How can I use join in MySQLi?

I am using MySQLi to connect to my database and my problem is that I want to insert in the database but I get this error: Error: Cannot add or update a child row: a foreign key constraint fails ...
0
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1answer
98 views

Calculate total attendance for each workshop

I want to get overall attendance in each workshop. NumberOFWeeks column holds the number of weeks the workshop runs. for example Workshop 101 runs for 6 weeks meaning 6 days. So far I have done ...
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1answer
74 views

Error: Incorrect usage of UNION and ORDER BY

I have this query: SELECT DISTINCT CONCAT (MONTH(`Date`),'-',YEAR(`Date`)) from wp_result_plugin WHERE Bet=2 AND month(`Date`) = EXTRACT(month FROM (NOW())) ORDER BY MONTH(`Date`) ASC UNION ...
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1answer
30 views

Returning auto-generated primary key after SQL insertion

I am trying to submit data to a database and then have it return the value of the user_id (primary key) created by the insertion, but I can't get it to return the value. I use the same query in ...
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0answers
36 views

How to group two query that have already been grouped

I am creating a chat system and i have two queries: The first query selects the Max(id) meaning the last message that has been received or sent by the member that is connected and that has not yet ...
0
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1answer
25 views

Update multiple meta_value with single query

Here is a similar structure of a table that I am working on. |--ID--|--user_id--|--meta_key---|--meta_value--| |--1 --|--444444---|--first_name-|------NULL----| |--2 ...
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vote
1answer
359 views

Can't insert arabic text into mysql database using mysql prompt

I had a local table with arabic values.when exported i got the following query. DROP TABLE IF EXISTS `type`; CREATE TABLE IF NOT EXISTS `type` ( `bs_id` int(11) NOT NULL AUTO_INCREMENT, `types` ...
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0answers
53 views

Receiving duplicate results in one condition of JOINED query

I always end up here when Googling for solutions, so I thought I'd cut out the middleman since I'm unable to fix this via searching/forums. It's my first time posting, so please forgive any faux pas ...
2
votes
2answers
3k views

Get table name from union query?

This is my query SELECT Id, productName, Largeimagepath, Discount, Price, Image FROM tablename1 where Active =1 union SELECT Id, productName, Largeimagepath, Discount, Price, Image FROM tablename2 ...
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0answers
31 views

Packet and N-SubPacket Msql query ( same as catgeory and N sub catgeory )

First of i am PHP Developer , and working on huge project alone .i think i have made many mistake in creating table. and below is one of those. I am making packet type system when in my Packet Table ...
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0answers
423 views

Mysql Insert taking too long. Table need optimzation

I have around 60 tables and a video table with over 600,000 rows. with 4 Btree and 2 FULLText Indexes and have around 30 Columns. Server Specs are high, over 30G of Ram, Intel Xeon Processor. Mysql ...
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votes
1answer
60 views

Database update rather than cycle through? [closed]

I'm new when it comes to MySQLi and databases so I'm not sure how exactly to title this question. I have a PHP script setup to where it inserts data into the database. Pretty self explanatory. ...
1
vote
1answer
506 views

Cannot change root access in MySQL to %

This is a new MySQL Server install. I created my root password as part of the setup (on Centos 6.4). When I connect to the server through a terminal, I can connect to MySQL and issue commands, using ...
2
votes
0answers
145 views

Changing Charset to utf8 for all the fields and tables in mysql

How should I use the mysql and awk to change the charset for all the fields and tables for a specific database? I did not include username or password, so for sure it will not work. Should I run it ...
1
vote
1answer
898 views

MySqli - select from db based on time difference with CURTIME() or SUBTIME()

I have a db with some customers data. There I store their last login time as datetime. I want to run a cron php script every min which will query mysqli for their last login datetime and if that was ...
3
votes
2answers
581 views

Should I use select count(*) for counting records or having a field like comments_no for tables like post, comments?

In my recent project which is about social networking for an Asian country, I'm in doubt whether I use the below SQL statement for counting records: SELECT COUNT(id) shareLikeNo FROM ...
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2answers
358 views

how to get count(*) from table which either has column or not?

I have a post table as below: CREATE TABLE `post` ( `p_id` smallint(5) unsigned NOT NULL AUTO_INCREMENT, `user_id` smallint(5) unsigned NOT NULL, `cat_id` tinyint(3) unsigned NOT NULL, ...