Specifies the type of data being stored (string, date, numeric, etc).

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32 views

Equivalent data types in Oracle database for SQL Server 2008’s uniqueidentifier and timestamp

I am working on SQL Server 2008 R2, and I have data types which is specific for SQL Server, including: UniqueIdentifier Timestamp Now I want to deploy my asp.net mvc 5 web application on an ...
0
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0answers
27 views

Questions about the SET DATEFORMAT command [on hold]

How do I set the dateformat for a column, where dates exist as '2014-12-28' and '2014-23-12' in the same column? I want it set as yyyy/mm/dd format.
0
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0answers
18 views

Best data type to store Active Directory Nullable GUID

I have a table name Employees,inside Sql Server 2008 r2. the table contain the following columns:- UserID. it is the Primary key, and it is auto generated by the DB. GUID. which will store the ...
0
votes
1answer
21 views

MySQL 5.6 Datetime Range

According to MySQL 5.6 doc, the supported range for datetime data type is '1000-01-01 00:00:00' to '9999-12-31 23:59:59'. But when I tried inserting values that are earlier than '1000-01-01 00:00:00', ...
1
vote
1answer
38 views

Standard data types for email address, telephone number , first name, rixh text editor, etc

I want to build a database for our system using Sql Server 2008 R2. but i need to know what are the best data types for storing these info:- Email address Telephone number with extension, such as ...
1
vote
1answer
76 views

Storing more than 8000 bytes in a column [closed]

I have a column in one of the tables in my SQL Server database that can have more than 8000 characters. As the maximum allowed character length for a column in SQL Server is 8000, how can I store the ...
0
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2answers
54 views

Setting for default column type

Is there a setting in SQLServer 2008 and newer for default data type of date-time columns, i.e. datetime or datetime2? Actually more like something that would tell SQLServer to use datetime2 instead ...
0
votes
1answer
31 views

Blob datatype issue with log file

I am getting continuously below error message in mysqld.log [ERROR] InnoDB: The total blob data length (10152274) is greater than 10% of the redo log file size (3072). Please increase ...
1
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0answers
15 views

How to create a “match result” data type?

I'm building a football match table which contains one column "match result", which should consist of data like "3-1","0-0"... I'm wondering what kind of data type is best appropriate for it, varchar ...
1
vote
1answer
39 views

PostgeSQL 9.3: What is the difference between text and pg_catalog.text?

I have a classic 3-environments setting (dev, staging and production), each with its own RDS PostgreSQL 9.3. The client/server versions are psql (9.3.5, server 9.3.3). In order to keep the schemas ...
0
votes
1answer
46 views

In a banking organization, why would account balance be declared as varchar and not decimal?

I worked in two organizations where I found money related columns are defined as VARCHAR data type. I didn't get correct explanation from anyone. As the database team is totally isolated with our ...
0
votes
1answer
49 views

12 hour format time in SQL datatype

I can convert time datatype to 12 hour format using convert etc. But is there any option to save the time in 12 hour format in SQL tables using any settings or property or any other methods?
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7answers
6k views

Storing IP address

I have to store the IP address of all registered users in the database. I am wondering, how many characters should I declare for such a column? Should I support IPv6 as well? If so, what is the ...
4
votes
2answers
7k views

A Script to insert dummy Data in all tables of Database

I wanted a Script that can loop through all tables and their columns in the database and insert dummy data based on column type and size, so that i can start using the database for testing, and ...
0
votes
5answers
96 views

Database with only text fields

I started working on an existing SQL Server Database System in which most of the fields are stored as text. Except some IDs all fields are varchar (phone numbers, zip codes, Dates, addresses, monetary ...
0
votes
1answer
34 views

How to use timestamp/rowversion data types in Visio?

I am using Visio 2010 to create a ER diagram. When I insert the column names, I can't find timestamp or rowversion data types. Is there an alternative?
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2answers
4k views

work with json in oracle

Is there an easy way to work with JSON within Oracle? I have a stored procedure that I use to call web services quite often, JSON is a format that I am familiar with in web development context, but ...
0
votes
1answer
38 views

Best datatype to store betting odds? [closed]

I have a lot of soccer betting odds (hundreds per match and thousands of matches), for example: <_10Bet_Home_Home>8.00</_10Bet_Home_Home> ...
3
votes
1answer
2k views

Why aren't unsigned integer types available in the top database platforms?

Databases are usually very customizable with varying data types and custom lengths. It surprises me, as I try to look for the syntax to use unsigned int types that they are not available from neither ...
3
votes
2answers
64 views

How to save an interval of years in postgresql

I have to save an interval of years, like: id intervalYears 1 2014/2015 2 2015/2016 3 2016/2017 And so on. Those years are like accademic years, so the first year must be lesser then the second, ...
1
vote
1answer
32 views

Is there a data type I can use for RA & Dec in astronomy

I need to have fields in my database for the following: RA (hh:mm:ss.00) Dec (Degrees:arcseconds:arcminutes.00) I need to have the facility to search for a range within each field. Any ideas?
-1
votes
1answer
160 views

Multiple conditions in a derived column ssis

Hi I am trying fairly new to SSIS , and my task is to convert dates in string as given below to a datetime. These are my date of birth in the source file (string data type): Source date of birth ...
5
votes
1answer
119 views

For alignment optimized table is bigger than original table - why?

In another question I learned that I should optimize the layout from one of my tables to save space and have better performance. I did this, but ended up with a larger table than before and ...
3
votes
1answer
114 views

Good layout of 3d point data for spatial queries in Postgres?

Like shown in another question, I deal with a lot (>10,000,000) entries of points in a 3D space. These points are defined like this: CREATE TYPE float3d AS ( x real, y real, z real); If I am ...
3
votes
1answer
22 views

Is 'internallength' always useful in custom type definition in Postgres?

In our database we use a custom type to store 3D locations: CREATE TYPE float3d AS ( x real, y real, z real); In many examples I see INTERNALLENGTH used as a parameter with the definition of ...
0
votes
1answer
72 views

Why does mysql give different result for this summations? [duplicate]

Can someone help understand the following behavior? mysql> select (1/3 + 1/3 + 1/3); +-------------------+ | (1/3 + 1/3 + 1/3) | +-------------------+ | 1.0000 | +-------------------+ ...
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0answers
58 views

Best practice for storing image order number in a database

I am designing a social networking website(mysql with InnoDB engine + php) where I need to store image sequence in a database. The table structure is as follows:- PicId (BIGINT, AUTO INCREMENT, PK) ...
2
votes
1answer
84 views

PostgreSQL Division In Query Not Working

So I am having a really off day or something, but for the life of me I can not figure this out. I am trying to divide tier1 by total to get a percentage of the total. I thought like this: (tier1 / ...
5
votes
2answers
3k views

Designing a user authenication (Roles & Rights) module

I am trying to model a User Authentication module for a MS SQL Server database that will be the back end to a Delphi UI Application. Basically, I want to have user accounts where the user belongs to ...
19
votes
8answers
8k views

How do long columns impact performance and disk usage?

In our current project it just happens too often, that we need to extend columns by a couple of characters. From varchar(20) to varchar(30) and so on. In reality, how much does it really matter? How ...
2
votes
3answers
798 views

Query to return output column names and data types of a query, table or view

Is there a PostgreSQL query or command that returns the field names and field types of a query, table or view? E.g., a solution if applied to simple SELECT query like SELECT * from person should ...
2
votes
3answers
132 views

Constrain a postgres timestamp to “End of day”?

Given a table named bananas and a timestamp without time zone column named end_time and some psql clients have set timezone to 'UTC' and other psql clients have set timezone to 'US/Eastern' and the ...
0
votes
3answers
742 views

Convert yymmdd to datetime using ssis derived column

Below are the strings representing date of birth (yymmdd). I want to convert it into datetime format and load into a database using ssis. How can I do it? In my derived column I have ...
2
votes
2answers
93 views

Database events that will cause deletion of index

In SQL server if we try to change a data type of a column having index ,then it deletes the indexes associated with that column and changes the data type . I was not aware of it and was faced problem ...
1
vote
5answers
233 views

What is the advantage of partition Date field into individual Year(int), Month(int), Day(int), Time(time) columns? [closed]

What is the advantage of partition Date field into individual Year(int), Month(int), Day(int), Time(time) columns? My manager said this is well known practice and query performance is good. Is this ...
1
vote
1answer
47 views

how to update the value of a period contained inside a bigger range

I have a tsrange like '[2010-01-01 14:00, 2010-01-01 15:00]',20 And want to update the 20 value to 15 in a range inside that, like '[2010-01-01 14:10, 2010-01-01 14:30]',15 My expected outcome ...
3
votes
1answer
36 views

Why does the behavior of array syntax differ from '(?,?)' syntax when updating a point field and that field is NULL?

I'm using PostgreSQL 9.3.5. Suppose I have the following table: CREATE TEMPORARY TABLE point_test ("name" varchar(255), "pt" point); I then insert a row, leaving pt NULL: INSERT INTO point_test ...
1
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0answers
145 views

MS Access 365 When selecting Lookup Wizard, datatype is changed to Number

I want to create a relationship between my Contacts table & Ref_State table. Contacts table has field called State/Region which I want to make Data Type = Lookup Wizard Ref_State has fields ID ...
2
votes
2answers
372 views

Changing data type from mediumint to int without downtime

My current table is using MEDIUMINT for ID column ‘primary key auto increment’. The current table records soon will reach the maximum value for mediumint which is 8388607. That being the case, I need ...
0
votes
1answer
114 views

Inheritance discriminator column better int or varchar or enum?

What is the best practice for storing a discriminator column ? Does it make any difference ? Any pros/cons of using one over the other ? I am using MySql with Entity Framework but the question goes ...
1
vote
1answer
21 views

Datatype for different categories in a database

I have got the following categories for accounting and cash flow purposes: Equity Contribution Distribution Valuation Debt Issuance Payment Valuation Allowance Interest ...
0
votes
1answer
32 views

What kind of data type to use for numbering in the Harmonized System?

The harmonized system uses a numbering that shows the hierarchy between different items. Similar to bookkeeping ledger numbers. Here is an example: 01 LIVE ANIMALS 0103 swine, live 010310 Purebred ...
5
votes
2answers
3k views

Data type for storing an array of flags (a bitmap/bit array)

I need to store a bit array for each record of a table, supporting the following operations: Testing if a bit is set, and setting a bit (using SQL) Querying and setting the value using ADO 2.8 (not ...
1
vote
1answer
515 views

What datatypes can cause “String or binary data would be truncated”?

What kind of datatypes can cause the "String or binary data would be truncated" error? Varchars and other strings are obvious, but what about the "binary data"? Can this include integers or datetimes? ...
0
votes
5answers
140 views

define rating column in table?

Hi I am creating database for rating the items in my list but I want to ask what this if I have five stars rating how can I do it in database "rating" column should I use Int with check constraint or ...
8
votes
2answers
9k views

How to combine date and time to datetime2 in SQL Server?

Given the following components DECLARE @D DATE = '2013-10-13' DECLARE @T TIME(7) = '23:59:59.9999999' What is the best way of combining them to produce a DATETIME2(7) result with value '2013-10-13 ...
4
votes
1answer
486 views

How do I decompose ctid into page and row numbers?

Each row in a table has a system column ctid of type tid that represents the physical location of the row: begin; create table t(id serial); insert into t default values; insert into t default ...
0
votes
0answers
245 views

Suppressing the removal of trailing zeros in numeric data type in sql server

I initially declared the data type of the columns for some of the tables i am working on as "NUMERIC". cause of that, trailing zeros are being removed. Is there anyway to suppress this behavior? i ...
1
vote
1answer
138 views

Alternatives to NULL for missing data [duplicate]

I am using PostgreSQL and trying to write value constraints. Is it possible to record missing data as distinct from NULL values in a numeric field without using an arbitrary numeric value? For many ...
3
votes
1answer
2k views

query to identify all data types used in postgresql database tables

I don't want to know all data types, just all data types used in my database. Can this information be queried? PostgreSQL 8.4 and 9.x versions I currently need to know all data types for over 200 ...