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

learn more… | top users | synonyms

1
vote
1answer
76 views

Low cardinality fields: integer or string

A Ticket has the statuses: new in_progress on_hold closed I could make ticket.status a string (on_hold) or an unique int(2). It is indexed. Int pros: smallest size in index Int con: low clarity ...
1
vote
1answer
38 views

Advantages of POINT over DOUBLE for distance queries?

I'm about to start an application that will need a simple distance query to order results. After some search I've discovered some functions that seems to do this work pretty easily without needing ...
1
vote
1answer
251 views

pg_restore warning column X has type unknown

I'm doing a dump from PostgreSQL 9.1 and restoring on PostgreSQL 9.4 and getting this warning pg_restore: WARNING: column "foobar" has type "unknown" DETAIL: Proceeding with relation creation ...
1
vote
1answer
118 views

What is the best SQL Server field type to cast to when storing a UNC path stored in a sql_variant field?

What is the best choice of field type to cast to when storing a UNC path in a sql_variant in Microsoft SQL Server 2008? It appears that I could store up to 4000 characters according to Microsoft ...
1
vote
1answer
2k views

MongoDB Keys and casting between types

This is more of a theoretical question: Let's say I have a collection of documents, my_collection: { "_id": ObjectId("52c679ac7a23e6225b62c51f"), "date": ISODate("2014-01-06T03:48:30.737Z") ...
1
vote
1answer
8k views

Table schema column data type equivalents for Netezza 6 to SQL Server 2008

I'm trying to find a data type equivalents for data types in Netezza when migrating table schema to SQL Server. Where can I find a complete list? When getting down to brass tacks, I am specifically ...
1
vote
1answer
467 views

Is it possible to fetch or update table data by table field type?

Is it possible to fetch or update table data by field type? If possible please tell me with a sample code.
1
vote
1answer
102 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 ...
1
vote
1answer
447 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 ...
1
vote
1answer
69 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?
1
vote
2answers
170 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 ...
1
vote
1answer
261 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
240 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?
1
vote
1answer
111 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 ...
1
vote
1answer
25 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 ...
1
vote
1answer
308 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 ...
1
vote
1answer
623 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), ...
1
vote
1answer
190 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)) ...
1
vote
2answers
7k 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 ...
1
vote
0answers
50 views

Is PostgreSQL text really that much faster than Oracle CLOB? [closed]

I have an oracle 10g table with 1 clob column. The clobs aren't very large mostly around 2-8 kb. However reading many rows takes an excruciating amount of time. Even with storage in row enabled. I ...
1
vote
0answers
36 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 ...
1
vote
0answers
45 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 ...
1
vote
0answers
25 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 ...
1
vote
1answer
129 views

Overwhelmed with Sensor Data - Excel to SQL Server 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 ...
1
vote
1answer
57 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 ...
1
vote
1answer
75 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
vote
0answers
180 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) ...
1
vote
0answers
632 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 ...
0
votes
3answers
5k 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 ...
0
votes
1answer
134 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 ...
0
votes
2answers
111 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" ...
0
votes
2answers
131 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
2answers
96 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 ...
0
votes
1answer
316 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 ...
0
votes
2answers
476 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)
0
votes
2answers
262 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 ...
0
votes
2answers
182 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 ...
0
votes
1answer
279 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?
0
votes
2answers
171 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 ...
0
votes
1answer
19 views

Unsigned Int datatypes

Does Microsoft SQL Server support unsigned integer data types? I am trying to learn a bit more about the data type choices and helping a friend in his database project, I know that MySQL does.
0
votes
1answer
32 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 ...
0
votes
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 ...
0
votes
1answer
54 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 ...
0
votes
1answer
2k 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 ...
0
votes
4answers
869 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: ...
0
votes
2answers
8k 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
26 views

Storing mail in database, data type

I've found pretty poor informations about mail databases. My need is to archive mail messages downloaded from a normal pop3 or imap account: I am an ordinary user and I do not own the server, but ...
0
votes
1answer
85 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 ...
0
votes
1answer
144 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 ...
0
votes
1answer
188 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` ...