0
votes
0answers
2 views

How to troubleshoot, find and fix query Percona 5.6 with error “SQLSTATE[HY000]: General error: 1785 When @@GLOBAL.ENFORCE_GTID_CONSISTENCY = 1”

i'm running Magento CMS, and underneath there are 2 physical servers both with Percona Server version: 5.6.23-72.1-log Percona Server (GPL), Release 72.1, Revision 0503478 in Master/Slave with GTID ...
0
votes
3answers
6k views

MySQL - Autoincrement does not increment sequentally if last row was deleted

I have a table which contains an auto incremented primary key id. If I delete the last row (highest id, for exampe id = 6) and insert a new row, the new id starts at 7. Which paramater I have to ...
0
votes
0answers
25 views

Slow “CREATE TABLE” and “TRUNCATE” on MySQL / MariaDB

I am fighting with performance issues on a local MariaDB instance. Fun thing: I previously had problems with all my INSERT and UPDATE and DELETE queries. This got signigicantly faster (~40ms -> less ...
2
votes
1answer
14 views

Why is it truncate table, and not simply truncate?

Upon reviewing some of our code a colleague posited that he was annoyed at always having to write TRUNCATE TABLE when there is no real other usage for TRUNCATE. Googling this, I indeed can not find a ...
0
votes
0answers
7 views

Is below table is in 3NF, if not why?

buyer_id int(11) No fb_id varchar(250) No gmail_id varchar(250) No buyer_name varchar(50) No buyer_email varchar(50) No buyer_password varchar(100) ...
0
votes
0answers
34 views

How can I calculate the difference between my time column in seconds? [on hold]

I have got a large database, one of the columns is the time with this format "08:27:22" and I am looking to find out the difference of seconds between the "open doors" and "close door" events. The ...
0
votes
0answers
4 views

How to convert to 3nf table

project_id int(11) No project_name varchar(100) No category_id int(11) No builder_id int(11) No city_id int(11) No locality_id ...
0
votes
0answers
2 views

Use cases of Key-Value NoSQL databases

What systems are using Key-Value (KV) NoSQL databases ? I need some examples of systems, where this type of DBs is used. Do you know any of them ? (by systems I mean systems like eBay, facebook...) ...
-1
votes
0answers
25 views

Looking for 3Nf conversion of table [on hold]

project_id int(11) No project_name varchar(100) No category_id int(11) No builder_id int(11) No city_id int(11) No locality_id ...
0
votes
2answers
25 views

insert into select with union needs derived table

Why do I need to do another select when I am trying to insert distinct values into a table? Also: is there a better way to do this? WORKS: INSERT INTO phppos_categories (name) SELECT category FROM ...
2
votes
2answers
28 views

XML vs. Relational databases?

I feel like this isn't the best question to ask on a programming site like this, but I haven't really found a satisfying answer online and I would really like to get a different perspective on this. ...
2
votes
1answer
615 views

Primary key type change not reflected in foreign keys with MySQL Workbench

I have a problem with MySQL Workbench and primary/foreign keys. I have some tables with PKs involved in relationship with other tables. If I modify the type of the PK, the type of the FK doesn't ...
1
vote
3answers
42 views

SQL actually executed as planned in ORACLE?

I wonder if SQL is definitely executed as execution plan. I mean.. is the actual SQL execution process always consistent with execution plan, i.e. does the same SQL always give the same plan?
1
vote
0answers
7 views

Does schema normalization enhances query efficiency

I understand the importance of normalization in reducing data redundancy and various anomalies but I am wondering if it can also enhance the performance of your query?
0
votes
1answer
308 views

MySql - Reorder primary key with auto-increment

I have two tables in MySQL as follows: CREATE TABLE UserMst ( UserID mediumint(8) unsigned NOT NULL AUTO_INCREMENT, UserName varchar(20) NOT NULL, CreatedOn timestamp NOT NULL DEFAULT ...
0
votes
1answer
15 views

Configuring Listener on Oracle Server

I am very much new to Oracle environment. I was trying to connect to my Oracle server from another machine on the same network. I found out that I need to configure Oracle Listener on the server that ...
0
votes
0answers
13 views

SQL 2008 R2 Agent stopping sp_who2 running and can't view database or Agent properties

We're experiencing an unusual issue with SQL 2008 R2 SP2 (10.50.4297) where the SQL Agent had stopped but would not restart (this has been fine for months). After investigating the issue we had to ...
1
vote
1answer
240 views

I need advice on these queries

could you help me optimize these queries? here are queries, please note that you see something like OR 1=1 OR those are values I pass via php and may change. query#1: SELECT posts.status, ...
0
votes
0answers
13 views

Does MySQL InnoDB locks multiple rows with READ_COMMITTED isolation level?

I am in trouble while resolving LOCK WAIT TIMEOUT EXCEED error with MySQL InnoDB. I have gone through this article and it says if we use isolation level READ_COMMITTED then my update query should ...
0
votes
0answers
19 views

Arithmetic operations on a table

can anyone give me some advice on the following situation: I have two basic tables: Then a view created by the two: select product.IDPRODUCT, sum(quantity) as totalOut, PRODUCTSTORAGE.DATAINPUT, ...
1
vote
2answers
2k views

Use domain username on SQL server reporting services installed in a server which is part of a Workgroup

I have installed SQL Server 2012 on Windows Server 2008. This system is configured to be part of a Workgroup and all the users in our organisation are part of a domain. I am trying to use the ...
0
votes
1answer
2k views

Access 2010 After Insert data macro to update another table

I have an Access DB with 3 tables. Table 1 Appointments Fields with Data that is not used anywhere else, but some of the information is inserted into 3 with a after insert Script. Table 2 Usage Data ...
-3
votes
1answer
33 views

how to insert into tables in sql server? [on hold]

I have a query to create "governorate table" like this: CREATE TABLE governorate ( ID int IDENTITY(1,1) PRIMARY KEY not null , name varchar(50) UNIQUE , ); then I want to insert data in ...
2
votes
2answers
2k views

Can't drop UNDO TABLESPACE

We have Oracle 11gR1 RAC two instances on two different servers, new undo tablespace UNDOTBS20140508 created 30G, I want to remove the old one UNDOTBSX02, I did the following: CREATE UNDO TABLESPACE ...
-1
votes
0answers
38 views

Connect to different databases on the same server

I currently have two databases (SQL) on the same server, and I can connect to both of them locally. However, I cannot connect to one of them remotely, but the other works just fine. There's no SQL ...
1
vote
1answer
28 views

MS SQL Server 2014 has vulnerabilities

I have some vulnerabilities in my MS SQL Server 2014: List of RC4 cipher suites supported by the remote server : High Strength Ciphers (>= 112-bit key) TLSv1 RC4-MD5 ...
9
votes
3answers
119 views

Combining separate ranges into largest possible contiguous ranges

I'm trying to combine multiple date ranges that may or may not overlap into the largest possible contiguous date ranges. For example: Data: CREATE TABLE test ( id SERIAL PRIMARY KEY NOT NULL, ...
1
vote
4answers
11k views

Xampp 3.2.1 error: MySQL shut down unexpectedly

I logged into Xampp today and it wouldn't launch MySQL. It said there was an error and it shut down unexpectedly. Here are the errors from the error log. Hoping someone has seen this before, ...
0
votes
0answers
13 views

MySQL Pivot table

I have a MySQL table with following columns ZipCode PartNo Price DateCaptured Example data rows 50070 |P1234 |57.90 |2015-05-05 05:05:05 50070 |P1235 |58.90 |2015-05-05 05:05:05 ...
74
votes
9answers
13k views

Where are some useful SQL puzzles to teach SQL in a workplace?

I'm looking for beginner and intermediate level SQL puzzles, that I can point trainees at for practice. I'm aware of http://sqlzoo.net/ which is a great resource - is there anything else out there ...
1
vote
2answers
38 views

Which method is better to drop all user connections before a restore Change to single user mode or Take offline the database?

When we restore a database from prod to dev which method is better to disconnect other connection accessing the database? I am on SQL Server 2008r2 1. Change to Single user mode use master Go ...
2
votes
1answer
179 views

Chunk Size is shown as 1 KB in mongo db logs even it is set to 300 MB

I am running a mongo cluster. Chunk size set is 300 MB but for today morning it is showing me in logs taht chunk size is 1024 Byte. I checked in current op there also it is showing chunks of 1024 ...
2
votes
1answer
125 views

Mongodb replica sets: why does my master server occupy more disk space than my slave?

I have two servers on my replica set. Let's call it the master and the slave, for the purpose of this discussion. The master was the original one, and the slave was replicated from that master. At ...
0
votes
0answers
17 views

Mysql trigger on insert on another table

I have three tables all three have [product_id] column, what all i want to do is when there is new entry of quantity of respective [product_id] in table A and table B i want show the sum of the ...
1
vote
1answer
12 views

Dividing values from a single column into 2 based on a rule

I am trying to create an SQL query to divide into 2 separate columns based on a rule. My table is as follows Name | Item ID | Parent ID ----- | -------- | ---------- A | 1 | Null B ...
0
votes
1answer
27 views

Backup a huge database 200gb+

i have a mysql database where i need to take a backup of the log database. the problem is the log database i over 200gb and contains over 280 millions of rows, i need right now to remove a kind of ...
0
votes
1answer
18 views

How to insert UNIQUE IDs values from several tables into events table

I have a table called events defined as follow: rep_id, hcp_id, brand_id, email_id and content_id is the IDs in other tables. event_type should be kind of array containing this values: [ ...
0
votes
1answer
322 views

How to update a field in sharded environment in mongodb using C# driver

I have successfully done loading in sharded environment. It is working fine. But when I do update in sharded environment, I am getting the error as : WriteConcern detected an error 'update { q: { ...
0
votes
2answers
1k views

Improve MySQL Query Performance - Too many records

I am using MySQL RDMS for a contact management system. Now a days my database grew in size and contains more than 1 million records. Checking duplicate phone numbers became a big issue during ...
1
vote
1answer
3k views

MongoVUE connect to mongodb with authencation failed!

I had a mongodb ,and a database named genbank ,genbank has a user whose role is "read" and "readAnyDatabase",it is very strange that I cannot connect genbank through this role by MongoVUE ,but I can ...
0
votes
0answers
6 views

Removing per column and table collation and charset

I recently completed a transition of a database from CHARSET=utf8 COLLATE=latin1 to CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci. During the process tables were migrated one at a time by altering their ...
0
votes
1answer
18 views

Database Role seemingly lost permission

I have a windows application that accesses a SQLServer database. Sometime within the last week or so it stopped working on other peoples machines with an exception thrown indicating they did not have ...
0
votes
2answers
568 views

Netezza Error Record size 120000 exceeds internal limit of 65535 bytes

I have a column PARAM that has JSON data that looks like this: JSON:{"Name":"RES_InformationalIssues","StepName":"Page_1","StepData":"f601e9fe-d68a-4ed7-bbaa-f40c9cbc4d12=General Product ...
1
vote
0answers
14 views

How can I setup a Login which can run an automated Database Refresh without giving away too much priv?

I would like to re-ask and extend the question posed in this thread if I may: SQL Server permissions to create, restore, delete only some databases I am also attempting to setup an 'isolated' ...
-3
votes
0answers
15 views

sharepoint DBA. [on hold]

What exactly makes a 'Sharepoint DBA' different from a normal SQL DBA. What are the differences in competency and responsibility? What are the differences is daily database support?
0
votes
2answers
168 views

Idea for manking tables for a pharmacy

OK I'm not into Database management, but I got this problem, also not sure if I'm posting it at the right place or not. So, my Dad works in a pharmacy and all the work there is on paper and is done ...
0
votes
1answer
24 views

What is wrong with the following Python code — trying to insert into a database?

This works in MySQL Workbench: insert into nametest (name,surname) values('John''Krailling'); I am trying a get similar result with Pycharm with the following code: import MySQLdb db = ...
0
votes
1answer
19 views

how to store mp3 files in mysql database by using phpmyadmin?

first of all i am new to database, but i want a database for my site to store mp3 files in it so later i play them on my site by using jplayer. little though i know about database they said there are ...
1
vote
0answers
15 views

Installing instances of older versions of SQL Server

Are there any issues to be aware of when installing an instance of previous version of SQL Server AFTER installation of a newer version? e.g. Installing 2008 to a server with an existing 2012 ...
2
votes
1answer
62 views

How to write a query, with multiple foreign key in mysql

I am working on a simple PHP and MySQL college level clinic management system. There 4 main table which relation with foreign key. I'm little bit confusing multiple foreign key in table .. what would ...

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