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

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1answer
55 views

VARCHAR2 should perhaps be DT_WSTR when working with SSIS against a Oracle Database?

When using SSIS with Oracle database, it seems to always assume that a VARCHAR2 maps to a DT_STR. However, if my Oracle encoding is set to AL32UTF8, I should be able to store any unicode character in ...
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1answer
59 views

Is there a data type in MySQL similar to varchar(n) that not allow numbers or special characters in it?

Is there a data type in MySQL similar to varchar(n) that not allow numbers or special characters in it?
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2answers
154 views

Find and return items based on matching strings across 17 tables

I must start by saying that I am at best a sql novice. I am doing some data analysis and consolidation for my company and need to find if items match across any of the tables. The info in the tables ...
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1answer
235 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', ...
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1answer
202 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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1answer
100 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 ...
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1answer
24 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 ...
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1answer
278 views

Spliting Datetime into 2 Columns for Restaurant Reservation Schema?

Using PostgreSQL. The primary driver of this is that while no reservation will exist without a date and time, a user can search for and monitor reservations using a time or date or both. With a ...
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1answer
557 views

Column of generic/variable type?

In SQL, I would like to create a table which can contain generic data types. This types can change from every row. The solution I could come up to is: CREATE TABLE TagValue ( tag VARCHAR(64), ...
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1answer
175 views

Changing TEXT to VARCHAR

In a MySQL database (InnoDB) we have a table containing roughly 60.000.000 rows. One of the columns is of type text. Currently the longest entry has length 360 (found using SELECT MAX(LENGTH(value)) ...
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2answers
6k views

In MySQL, how to manually edit values of a BLOB column in few tuples?

In MySQL, how to manually edit values of a BLOB column in few tuples? For convenience of manual curation of database like this, should the column be created as BLOB or TEXT, or something else at the ...
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0answers
30 views

Do relational databases typically understand '1' and '0' as booleans?

I'm working on a code library that helps users build database searches from form inputs (a layer on top of an ORM). I want it to be compatible with most relational databases. I currently have a ...
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0answers
32 views

MATLAB® export double numbers into PostgreSQL by `datainsert` (of Database Toolbox)

How is it possible to pass double numers into numeric postgreSQL columns from MATLAB? Here the list of matlab data: var1 197x1 cell var2 197x1 double var3 197x2 double var4 197x2 double ...
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1answer
214 views

Grant execute on specific type in Oracle

I have created a package and defined a type for collections as follows: create or replace package <schema>.<package> as ------------------------------------- type <type> is ...
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0answers
24 views

Uninitialized values: ignore or set?

From the implementation point of view for a database, is it preferable to handle optional form fields by setting to some default value (e.g. false, 0, "", etc.) or just ignore such fields (do nothing ...
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1answer
99 views

Overwhelmed with Sensor Data - Excel to SQL fails

I'm managing a lot of sensor data and need to do charting, smoothing, stats over time on the data. Currently I import the data from flat files using VBA to do ETL into Excel. The format of the data ...
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1answer
53 views

Warehouse Database Design Question

Apologies if this has been answered previously but I have been unable to get a specific model to work. I have a database table that needs to store some very basic info for a reporting system. The ...
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1answer
66 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?
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0answers
163 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) ...
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0answers
584 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 ...
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5answers
210 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 ...
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3answers
4k 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 ...
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1answer
77 views

PostgreSQL column for year

I want to save the year in a PostgreSQL database - just the year. How should I create this field? There is a lot of information out there how I can extract the year from a date field, but not on how I ...
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2answers
108 views

Query that was working on MySQL is not working on PostgreSQL

I had the following query (with bin_number being a string) which was working on MySQL 5.5: Postgres - was working on MySQL and doesn't work on PostgreSQL SELECT "menu_items".* FROM "menu_items" ...
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2answers
95 views

Adding a bool column; tracking untouched vs. false

[backstory] I have a simple database of our current Widget inventory. It averages just dozen columns across five or six tables, but has a huge number of records already. Some Widgets came with ...
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1answer
168 views

Oracle NVARCHAR2(4000) with AL32UTF8 possible?

I thought, through reading items here and elsewhere, that if my Oracle database NLS_CHARACTERSET is set to AL32UTF8, I can have a column of type NVARCHAR2(4000), but when I try to create it, I get SQL ...
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2answers
200 views

change column type from string to numeric

so I have a table with 5.2 million records. 3 columns in this table are for salaries. Those column are currently stored as string and I'd like to change the data type to numeric (I understood while ...
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2answers
154 views

Why is Oracle's number datatype so HUGE? and why do I seem to have no alternatives?

Oracle has a favorite numerical class called NUMBER. It is a 22 byte value that just seems ludicrous in an index. I have some values that would easily fit in a 6 byte integer and would therefore fit ...
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2answers
121 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 ...
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2answers
335 views

SQL Server BigInt vs Decimal

I need to choose a data type for SQL Server( BigInt vs Decimal) on the basis of performance and querying (10 digit number)
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1answer
249 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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2answers
166 views

looping through a table type variable

I have a function that has one parameter of a table type, i want to loop through all the fields and return the column that has a null or empty value. CREATE OR REPLACE FUNCTION ...
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1answer
31 views

Working with PostgreSQL information_schema and tables (with same names, in different schemas) whose names start with a number

I'm needing to work with tables whose names start with numbers. For example, in the crs_1973 schema there is a table called 2015_04_21. I know that when the table name is made up of numbers, I must ...
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1answer
2k views

Storing latitude and longitude

I know there are similar questions on here that have been answered but unfortunately none of them work for me. I am hacking my way through creating a page which will display multiple locations on a ...
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1answer
52 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 ...
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5answers
873 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 ...
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1answer
1k views

Why does Oracle store time in DATE column?

I have a table with a date column. I used JDBC to save a java.util.Date object into the table. When I run following query I get date aswell as a time value: select To_CHAR(departure_date,'DD-MM-YYYY ...
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4answers
831 views

Writing SQL statement in sqlcmd to hide the milliseconds for column type of time

I have a table called testtable that have a column named expire_time of type [time] The problem is that when I type the following in sqlcmd: select * from testtable It will return the following: ...
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2answers
7k 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 ...
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1answer
48 views

DECIMAL and NUMERIC datatype in Postgres [closed]

what is the use of decimal and numeric datatype in postgreSQL. As per the reference the following is the explanation given to these datatypes. decimal,numeric --> It is a user specified ...
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1answer
58 views

Teradata sql syntax from date to quarter

Need a Teradata sql syntax to extract quarter from a date. Given below is the expected output Date: (YYYY-MM-DD) 2015-09-12 2015-05-22 2014-12-15 Output 3Q15 2Q15 4Q14 Query which I have ...
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1answer
151 views

Storing variable length arrays of doubles in MySQL without loss of information

I am trying to store variable length arrays of C++ doubles into a MySQL database. I was initially storing each value in the array as a row of the form: `pv_name` varchar(60) NOT NULL, `time_stamp` ...
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1answer
37 views

Array of strings when updating a field

Unintentionally discovered that following query works in PostgreSQL: UPDATE "sometable" SET "somefield" = ('string1', 'string2') WHERE "id" = 1; I'm passing an array of strings to field and the ...
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1answer
31 views

SQLite Data Types In Context of Disk Space

I would like to better understand which data types in SQLite take up more disk space. I've looked through official documentation but could not find anything in context of storage space. Any guide ...
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1answer
412 views

Do I lose data if I change from INT to TINYINT

I have a database (Engine InnoDB) that was setup by someone else. I noticed that one column contains data between 1 and 107 at this moment, and it is highly unlikely to further increase much. As it ...
0
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1answer
69 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
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1answer
141 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> ...
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1answer
180 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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1answer
297 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 ...
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1answer
346 views

Initializing values to a custom data type

I have defined a custom data type which I need to use in my procedure. Give below is my data type. CREATE or REPLACE TYPE CUSTOM_DATATYPE AS object( chkinvpre VARCHAR2(100), orderid ...