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Search found 140 results on 6 pages for 'tinyint'.

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• IsNumeric() Broken? Only up to a point.

  - by Phil Factor

  In SQL Server, probably the best-known 'broken' function is poor ISNUMERIC() . The documentation says 'ISNUMERIC returns 1 when the input expression evaluates to a valid numeric data type; otherwise it returns 0. ISNUMERIC returns 1 for some characters that are not numbers, such as plus (+), minus (-), and valid currency symbols such as the…

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• System.Data.SQLite parameter issue

  - by CasperT

  I have the following code: try { //Create connection SQLiteConnection conn = DBConnection.OpenDB(); //Verify user input, normally you give dbType a size, but Text is an exception var uNavnParam = new SQLiteParameter("@uNavnParam", SqlDbType.Text) { Value = uNavn }; var bNavnParam = new SQLiteParameter("@bNavnParam",…

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• sql: Group by x,y,z; return grouped by x,y with lowest f(z)

  - by Sai Emrys

  This is for http://cssfingerprint.com I collect timing stats about how fast the different methods I use perform on different browsers, etc., so that I can optimize the scraping speed. Separately, I have a report about what each method returns for a handful of URLs with known-correct values, so that I can tell which methods are bogus on…

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• java.sql.SQLException: Parameter number X is not an OUT parameter

  - by Frederik

  Hi guys, I'm struggling with getting the result OUT variable from a MySQL stored procedure. I get the following error: java.sql.SQLException: Parameter number 3 is not an OUT parameter The stored procedure looks like this: CREATE DEFINER=`cv_admin`@`localhost` PROCEDURE `CheckGameEligibility`( IN gID INT(10), IN uID INT(10), …

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• mysql enum performance: is enum slower than INT

  - by JP19

  Hi, Is it better to have a field status enum('active', 'hidden', 'deleted') OR status tinyint(3) with a lookup table. Assume that status can take only one value at a time. In particular, I am interested in knowing, are operations on enum significantly slower than or as fast as operations on int ? There is a related question on SO…

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• Under what circumstances would a LINQ-to-SQL Entity "lose" a changed field?

  - by John Rudy

  I'm going nuts over what should be a very simple situation. In an ASP.NET MVC 2 app (not that I think this matters), I have an edit action which takes a very small entity and makes a few changes. The key portion (outside of error handling/security) looks like this: Todo t = Repository.GetTodoByID(todoID); UpdateModel(t);…

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• For databases, does choosing the correct data type affect performance?

  - by Citizen

  And if so, why? I mean, is a tinyint faster to search than int? If so, what are the practical differences in performance?

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• Byte to Integer in c#

  - by jtb

  I am reading a row from a SQL Server table. One of the columns is of type tinyint. I want to get the value into an int or int32 variable. rdr.GetByte(j) (byte) rdr.GetValue(j) ...seems to be the only way to retrieve the value. But I can't figure out how to get the result into an int var.

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• Are there drawbacks to altering MySQL table data types?

  - by Tower

  Hi, I'm wondering that how much worried I should be about data types. I can easily jump from TINYINT to SMALLINT and from SMALLINT to INT, but are there any drawbacks to this? Obviously situations like from text to int will have consequences, but I'm talking about situations like INT-BIGINT, TINYTEXT-TEXT, etc.

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• 4 table query / join. getting duplicate rows

  - by Horse

  So I have written a query that will grab an order (this is for an ecommerce type site), and from that order id it will get all order items (ecom_order_items), print options (c_print_options) and images (images). The eoi_p_id is currently a foreign key from the images table. This works fine and the query is: SELECT…

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• MySQL: SUM in WHERE clause

  - by checcco

  Hi guys, I've got this table CREATE TABLE `subevents` ( `id` int(11) NOT NULL AUTO_INCREMENT, `title` varchar(150) DEFAULT NULL, `content` text, `class` tinyint(4) NOT NULL DEFAULT '1', PRIMARY KEY (`id`) ) ENGINE=MyISAM Each row can have a different value in the 'class' field. I'd like to select any…

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• Should I use BIT(1) or BOOL?

  - by Malfist

  Mysql has two types that can hold boolean data, bit and bool. Bit(1) seems more logical, because that has to be 1 or 0, bool is, according to the specs, the same as saying tinyint(1)

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• Simple UPDATE query with (sometime) long query times

  - by Eric

  I run a dedicated MySQL server (2 cores, 16GB RAM) serving 100-200 requests per second. It is getting sluggish during peak traffic and I have a hard time optimizing the server. So I'm looking for some ideas now that I have done lots of Innodb fine-tuning with the "TUNING PRIMER" The query that now generates most…

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• SQL Authority News – Download SQL Server Data Type Conversion Chart

  - by pinaldave

  Datatypes are very important concepts of SQL Server and there are quite often need to convert them from one datatypes to another datatype. I have seen that deveoper often get confused when they have to convert the datatype. There are two important concept when it is about datatype conversion. Implicit Conversion:…

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• Grouping a comma separated value on common data [closed]

  - by Ankit

  I have a table with col1 id int, col2 as varchar (comma separated values) and column 3 for assigning group to them. Table looks like col1 col2 group .............................. 1 2,3,4 2 5,6 3 1,2,5 4 7,8 5 …

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• MySQL: Creating table with FK error (errno 150)

  - by Peter Bailey

  I've tried searching on this error and nothing I've found helps me, so I apologize in advance if this is a duplicate and I'm just too dumb to find it. I've created a model with MySQL Workbench and am now attempting to install it to a mysql server. Using File Export Forward Engineer SQL CREATE Script... it…

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• How can I optimize this subqueried and Joined MySQL Query?

  - by kevzettler

  I'm pretty green on mysql and I need some tips on cleaning up a query. It is used in several variations through out a site. Its got some subquerys derived tables and fun going on. Heres the query: # Query_time: 2 Lock_time: 0 Rows_sent: 0 Rows_examined: 0 SELECT * FROM ( SELECT products . *,…

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• How can i clear a SQLite database each time i start my app

  - by AndroidUser99

  Hi, i want that each time i start my app my SQLite database get's cleaned for this, i need to make a method on my class MyDBAdapter.java code examples are welcome, i have no idea how to do it this is the dbadapter/helper i'm using: public class MyDbAdapter { private static final String TAG…

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• Declaring data types in SQLite

  - by dan04

  I'm familiar with how type affinity works in SQLite: You can declare column types as anything you want, and all that matters is whether the type name contains "INT", "CHAR", "FLOA", etc. But is there a commonly-used convention on what type names to use? For example, if you have an integer column,…

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• What's the difference between !col and col=false in MySQL?

  - by Mask

  The two statements have totally different performance: mysql> explain select * from jobs where createIndexed=false; +----+-------------+-------+------+----------------------+----------------------+---------+-------+------+-------+ | id | select_type | table | type | possible_keys | key …

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• Is it possible to a db constraint in for this rule?

  - by Pure.Krome

  Hi folks, I wish to make sure that my data has a constraint the following check (constraint?) in place This table can only have one BorderColour per hub/category. (eg. #FFAABB) But it can have multiple nulls. (all the other rows are nulls, for this field) Table Schema ArticleId INT PRIMARY…

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• ALTER TABLE on dependant column

  - by Sharmi

  I am trying to alter column datatype of a primary key to tinyint from int.This column is a foreign key in other tables.So,I get the following error: Msg 5074, Level 16, State 1, Line 1 The object 'PK_User_tbl' is dependent on column 'appId'. Msg 5074, Level 16, State 1, Line 1 The …

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• sql-server: how to select from dupilcate rows from table?

  - by RedsDevils

  Hi All, I have the following table. CREATE TABLE TEST(ID TINYINT NULL, COL1 CHAR(1)) INSERT INTO TEST(ID,COL1) VALUES (1,'A') INSERT INTO TEST(ID,COL1) VALUES (2,'B') INSERT INTO TEST(ID,COL1) VALUES (1,'A') INSERT INTO TEST(ID,COL1) VALUES (1,'B') INSERT INTO TEST(ID,COL1) VALUES…

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• Help with complex sql query

  - by eugeneK

  To make story short, i'm building self-learning banner management system. Users will be able to insert these banners to their site when banners will be shown based on sales/impressions ratio. I have 4 tables Banners bannerID int bannerImage varchar.... SmartBanners…

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• What's wrong with this SQL UPDATE query?

  - by Tommo

  I wouldn't ask if i wasn't sure that i have 100% no idea why this isn't working, so, in PHP i'm simply trying to update a value in the MySQL database: The field im updating - Name: read - Type: tinyint - Length: 1 Here is the PHP code: do_SQL("UPDATE messages SET…

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