A data structure that organizes information into rows and columns.

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20 views

Two tables with same field

QUESTION: I have QUOTATION table and SOA table quotation - table is for pending and not approve quotation. SOA- table for approve quotation. i will just transfer the data from quotation table to ...
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6 views

Need advice on storing pincode system (Zip code) and Shipping company Service Details

I am in the process of creating a system that could identify shipping companies (Fedex, UPS, etc.) from a given pincode (zip code) for a e-commerce platform. The shipping companies will provide a ...
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0answers
29 views

Cardinality of an index in a MySQL table is equal to table's row size

I have just included an index to a MyISAM table and the cardinality appears to be 1 million something which is exactly the number of rows in the table. In fact it needed to be 315 because distinct ...
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11 views

Question on comparing two fields in Access

I'm not sure if the title is fitting as I am not 100% sure if what I am doing is correct but here goes. Here is my enrolment table, I have added a field called pass/fail as you can see which is ...
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1answer
34 views

Query that compares dates

I'm trying to create a query that shows if students are mature or not, based on their date of birth. However when the query is executed it returns all students as not mature. Any students that are ...
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24 views

MYISAM can't create table: Row size too large

We are having database in MySQL 5.1, we have taken the DB backup from MySQL 5.1 and trying to restore in MySQL 5.6. We are getting below error: ERROR 1118 (42000) at line 603: Row size too large. ...
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4answers
87 views

In a one-to-one relationship, where should the foreign key be placed?

I am currently designing an ERD for a project management system. I am unable to choose between two workable solutions as the best solution as I wish to embrace the best standards. The two entities ...
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2answers
151 views

novice-design: Are FOREIGN KEYs always necessary? Joins on columns which are not PK

I've been wondering if following approach is bad or really very bad:). Question#1: can we use indicator_id to combine data from indicator_values and indicator_details tables (without using FOREIGN ...
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22 views

MySQL Table Structure for Group User Permissions

I could use some assistance in restructuring the schema on mysql for more granular permissions. We have a website where for example there is data for site 1, 2, and 3. There are users A, B, and C. ...
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3answers
111 views

SQL - Many-to-Many relationship with same table and with relationship constraint

I have a SellerProduct table. Each row within the table represents product information as offered by a seller. The SellerProduct table has the following columns: id (serial, pk) productName ...
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2answers
29 views

List all articles with their amounts at a certain date+time

I've got a table with articles, and their stock amount changes: TABLE stock_history: +------------+---------------------+--------+ | article_id | amount_at | amount | ...
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26 views

DB table design for attributes with multiple entries (eg: Person -> Social Media)

I am trying to decide the structure of a DB table to store Employee data. I am bit confused on how to design attributes such as Address, Social Media etc. There should be provision for multiple Social ...
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0answers
61 views

How to check wether a DB2 source table and their MySQL MyISAM duplicate are identical?

I want to compare two big tables if they are identical. If I update/insert one table into the other the process takes about 11 hours. What I am looking for is like a sum function which sum ups a key ...
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2answers
54 views

Table design: how to store denormalized Excel data

I have following data stored in Excel which I would like to transfer to SQL DB. There will be a new value every year for every indicator. Indicator | 2001 | 2002 | 2003 ...
2
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1answer
81 views

Fill Database With Recursive Factorial Function

I want to calculate table's all of the rows's factorials value. And then i want to insert to each row's factorial value in table. so that i create table like as below: TABLE:FACTORIALS ...
0
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1answer
25 views

MySQL conditional trigger delete

I have a few tables (6 to be exact) and I want to make a trigger that will delete a row from a table based on a value from the main table. To elaborate, Let's say I have a main table called "main" ...
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2answers
142 views

mysql won't start, it says Table mysql.plugin doesn't exist

I've had this problem for several hours, and now I'm just tired.. When I try to start MySql from terminal (mac), i get ERROR! The server quit without updating PID file ...
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1answer
49 views

T-SQL Check another table rows if match delete them

I am creating a script in SSIS where I want table A to check if rows exist in table B. If they exist, they must be deleted. Table A is an archive table named Customer_archive Table B is a table that ...
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1answer
35 views

How move MySql table to another disk?

According to this it is impossible to use alter table for moving tables. So if I understand correctlly - to move table it is neccessary to do: Create new table Copy all row from old one drop old ...
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1answer
46 views

counting the number of a specific word in one SQL column

I'm trying to make a survey like a referundum to know if my neighboors in my small building are for or against a colectif compost to reduce the organics wastes. For this tool vote I'm using PHP and ...
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0answers
33 views

Generate N x M random sample table from normal distribution in MySQL

Is there an easy way to produce a table of, say 10000 (rows) by 500 (columns) of numbers from normal distribution with parameters mu = 1, std.dev = 5 ?
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1answer
49 views

How can I select records which are between 2 dates based on a date in a field in PostgresSQL?

I have two tables: 1 with an Unique ID with the first time they visited (in date format) and a historical addresses table with the same Unique ID, a start field (date field), an end field (date ...
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1answer
62 views

Update all rows from a table with random foreign key from another table

I have four tables: (show on image below) Topic whit columns: ID primary key int CategoryID references to table Category int UserID references to table User nvarchar(128) User with ...
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2answers
45 views

SQL data deletion alert

I want to know if some data has just been deleted from my database and receive an e-mail alert with the table names which have been affected by the deletion . I have set up SQL SERVER to send ...
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1answer
25 views

i am not able to create the last table in my database,Help? [closed]

CREATE DATABASE DIVIGN; USE DIVIGN; CREATE TABLE CUSTOMER (CUSTOMER_ID INTEGER (10) PRIMARY KEY, FIRST_NAME VARCHAR (32), LAST_NAME VARCHAR (32), PASSWORD VARCHAR (16), ADDRESS VARCHAR ...
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1answer
40 views

table design for display content

In my previous work station, I saw them have a table design across all website they have worked on displaying editor content like this: column|page_id| title |content_1|... |content_n| lang ...
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2answers
69 views

How do I create a table whose values are based on queries of same table?

This is something that interests me, but I can't seem to find an answer as to how to do it. Basically, if I have a table and I want a column of that table to be based on a query, particularly when ...
3
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1answer
62 views

Designing Contacts

I've to create a DB structure which involves users, contacts, organizations and vendors. To break it down: We have a system with users (employees who use the the system). then these users add ...
0
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1answer
21 views

Filter Data to different data files on SQL server

I'm sure this is possible but I have no idea how or where to find the information on how to do it. Scenario: I have a reporting database (on SQL2008R2) which is split up into multiple file groups ...
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1answer
24 views

Foreign key: in which table?

I made the tables blood_types and persons. Should the foreign key be created in the blood_types or in the persons table like I did? A person can have 1 blood type. A blood type can be assigned to ...
1
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1answer
61 views

Search all columns in list of tables for particular string [duplicate]

I have a list of market data tables in one of our environments and need to search every column in the list for a certain string. Can anyone point me in the right direction. 1> select @@version ...
3
votes
2answers
86 views

How to read an excel file from a network machine using SQL?

I am trying to import some excel file data into a SQL table. I thought of using OPENROWSET for this. The issue is that the csv file is location in a different machine in the same network. How do I ...
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0answers
13 views

Organizing Educational Material

I worked with MC Access almost 10 years ago and not once since. Right now, I teach English and don't know any database lingo. I need some help in plain English. I've read some Q&A's here and it is ...
1
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1answer
65 views

UPDATE id table on the columns with the same name

I may be a newbie question but I don't know how to resolve this. I have a table like: name | id | value A 1286487 1286333 B 1286489 1286403 C 1286495 1286455 C ...
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0answers
147 views

Quotation and invoice mysql table

I am trying to develop a small business web application for my friends business. I do have some php,html experience so I have done the interface and all. Now I am trying to work on the database. The ...
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0answers
22 views

Table metadata auto_increment value for table modification

if table X is modified(DELETE, INSERT, UPDATE) then table X's metadata value should get incremented. I can write trigger for the same. But inbuilt solution will be better. This way I can stop ...
1
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3answers
64 views

Is it safe to run optimze on mutliple tables in parallel in mysql (percona)

I have a slave on which no query is coming. Lot of data has been archived and deleted from almost all tables. Size of tables vary from 80Gb to few Mbs. And there are around 130 such tables. Mysql ...
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1answer
53 views

Adding restaurants in database

I wanna store some vendors (like McDonald ,etc) and it's branches in a table. a vendor may,or may not have branches. I have created two tables: 1- A vendors table which have name,logo, etc. 2-A ...
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3answers
63 views

How to design a Table in which its fields varies on its categories?

I am trying to design a database to post free ads. Eg http://www.gumtree.com.au/p-post-ad.html Scenario: Every ad will have different categories and some categories will have further sub categories. ...
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1answer
78 views

Best way to store data in tables

I've been thinking on how to store data efficiently in database tables, I'll give the examples in visual look. See pictures below. I've come to think to store data in database using compressed values ...
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2answers
782 views

MySQL LOAD DATA INFILE Error Code 1366. Incorrect integer value: ' '

I've been trying to upload a CSV table into my remote server database but I find an error. I use MySQL in a RedHat Linux distrib. My mycsv.csv file looks like this: ...
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0answers
80 views

mysqld stops right after starting because of corrupted tables (disk full + hardware reboot) - how to fix it?

I'm dumb, I did the stupidest thing I could. On one of my servers, the SSD was full and I wasn't aware of it. The high-traffic website became working really slow, then started displaying errors, ...
2
votes
1answer
107 views

How to fix DB2 Unsupported functionality: GENERATED BY DEFAULT

On IBM DB2 I try the following direct SQL: CREATE TABLE users ( user_id INT NOT NULL GENERATED BY DEFAULT AS IDENTITY (START WITH 1), user_name VARCHAR(16) NOT NULL, email_address ...
8
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2answers
1k views

Why can't I see my table (PostgreSQL) when I use \dt(+) inside psql?

I have created the table donor in the schema reference as per: CREATE TABLE reference.donor ( donor_code smallint PRIMARY KEY, donor_name character varying NOT NULL, donor_type smallint ...
1
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1answer
153 views

Update Table Query: Automatically handle “Enter Parameter Value” prompts?

EDIT: Here are two database Files that demonstrate an applied example of the problem: Example_DBs.zip (Zipped due to 2 link limitation.) Note: The missing Field in "Not Working.mdb" is ...
1
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1answer
8k views

ERROR 1146 (42S02): Table 'db.tablename' doesn't exist [closed]

I have a two databases, when I prompt SHOW DATABASES I can see a list of the databases, including mysql, performance_schema and informations_schema. I can prompt 'SELECT DATABASE_NAME' on both of ...
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0answers
44 views

SQLite table design for PK and/or UNIQUE

I'm trying to design a table in SQLite3, where I can perform these 2 actions. INSERT new row where a unique primary key is created. And INSERT new row with an given primary key Think of a ...
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0answers
33 views

Design optimization

I'm designing a database for a crm like software. Actually it's my first project so i'm learning on the run on this one. I have customer and employee tables. I also have a history table for tracking ...
3
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3answers
144 views

Redesigning a table that has a lot of columns (not always related)

I'm new to database stuff so I apologize if I say anything ridiculous.. I work for a company that runs a website for a certain industry. We're not very large at the moment but our parent company ...
0
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0answers
43 views

Refactoring 80 GB table that stores massive amount of calculated results

Trying to evaluate architectural changes to improve the performance of an app that calculates a lot of individual values and stores each of these results as a row. The storage size for one of the ...