DO NOT USE this for questions targeting Microsoft SQL Server, use the tag sql-server instead. "SQL" is an acronym for "Structured Query Language", it is used in relational database management systems (RDBMS) to query, update, delete, and insert data as well as modify the structure of the database. ...

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2
votes
1answer
70 views

How to go about modeling the main object of relationship?

I'm using MySQL and MyISAM tables. I have a bunch of objects that I want to group together 1 object belongs to 1 and only 1 group 1 group can have many objects 1 group has 1 required main object ...
2
votes
1answer
1k views

Need Help Executing a Remote Task from SQL Server Agent

There is a scheduled task running on a batch server via the Windows Task Scheduler that sometimes overlaps with other scheduled jobs in the SQL Server Agent causing CPU issues. We can solve this if ...
1
vote
1answer
259 views

Stored procedure to validate xml content against dtd

I have a stored procedure which creates xml content and then is stored to a xml file. Is it possible to validate the generated xml content against a dtd file? Thank you in advance!
2
votes
1answer
1k views

What is the difference between COUNT(*) and COUNT(*) OVER()

Take the following code example: SELECT MaritalStatus, COUNT(*) AS CountResult COUNT(*) OVER() AS CountOverResult FROM (schema).(table) GROUP BY Marital Status COUNT(*) ...
3
votes
1answer
6k views

Get result of joining multiple tables as one row

I have these 2 tables: table1: id | name --------- 1 | john 2 | jack table2: id | profile_id | institution ----------------------------- 1 | 1 | SFU 2 | 1 | UBC 3 | 2 ...
2
votes
2answers
656 views

Optimize simple query using ORDER BY date and text

I have a query to a table in Postgres with an order based on a date field and a number field, this table has 1000000 records The data types of the table are: fcv_id = serial fcv_fecha_comprobante = ...
2
votes
1answer
2k views

What is the difference between TABLESAMPLE(10) and TABLESAMPLE(10 PERCENT) in SQL SERVER 2012

My understanding of the use of TABLESAMPLE is that it returns the top n percent of rows in a result set where TABLESAMPLE(n) So I wrote the following queries to just check (as I'm learning T-SQL) ...
2
votes
3answers
162 views

Which of these two methods is standard when creating a 1 to many database relationship?

If I have a customer that can have many addresses, I can create an Address table with columns Street, Town etc. and CustomerId. Then I can insert multiple records to have multiple addresses per ...
1
vote
1answer
66 views

Redundant transpose. Case is not enough to solve my problem

I have db problem in transposing rows to columns. I am half way through the result but getting redundant data. My table: EMP_ID EMP_NAME SAL_PAID 01 ABC JAN 01 ABC FEB 01 ...
2
votes
4answers
14k views

Query to list all tables in a schema

I am using Rational Application Developer to run querys on a database. We are unable to locate anyone who has a list of the tables on the schema and so far the queries we have found to get a list of ...
1
vote
0answers
309 views

SET IDENTITY_INSERT equivalent in Access

In sql server i can explicitly insert value to a identity column of a table by using SET IDENTITY_INSERT ON . For an Access database i am using Autonumber column datatype. For this column i am not ...
0
votes
2answers
72 views

Difference between the given queries

I am required to retrieve the list of pno ( product_id ) for the products which were purchased by two customers. For this, I have been given two relations which are ( along with the attributes ) as ...
2
votes
2answers
2k views

SQL Server 2012 Availability Group issue

I need some assistance and some bandages for shooting myself in the foot. This is a DEV environment but I need to bring it up. I am using SQL Server 2012 Enterprise on Windows 2008 R2. Somehow our ...
1
vote
1answer
5k views

Passing column names dynamically to UNPIVOT

I have a table with following data First Second Third Fourth Fifth Sixth 2013-08-20 2013-08-21 2013-08-22 2013-08-23 2013-08-24 2013-08-25 And ...
2
votes
1answer
700 views

Distributed - across multiple databases or servers - Transactions

I have some doubts related to transactions in SQL. I perform below steps. Connection 1 open for DB1 database Begin transaction for Connection 1 Run the commands on Connection 1 Connection 2 open for ...
-1
votes
1answer
101 views

Problems working with decode function when there is more then one expression

I am using Oracle 11g. I have these two tables: Table acct: acctnbr || Name || Mailing address 000001 || Slater || 000002 || Baker || Alt 000003 || Parke || Table addruse: ...
0
votes
3answers
623 views

Dividing in SQL

can anyone explain to me why this query returns 0.000? SELECT CAST(20/1024 AS NUMERIC(10,3)) I am just trying to do a simple conversion of MB to GB Thanks
1
vote
1answer
62 views

SQL SERVER 2012 error [closed]

am trying to restore a backup, the backup is from a database in the current instance, want to restore the backup with a different name for test purposes, this was possible in 2008 R2 but in 2012 its ...
0
votes
0answers
99 views

MySQL Access Denied, tried a few things, pulling hair

I'm trying to get to know Django (my first attempts at a framework, or any backend work for that matter), and I'm seriously stumped by MySQL, and SQL in general. I'm trying to create a new database ...
0
votes
3answers
1k views

Setting up SQL Server service broker from one database to multiple databases

I would like to set a SQL broker service whereby DatabaseA sends the same data to DatabaseB and DatabaseC. In this case, all databases reside on the same instance. I have looked at the following ...
2
votes
1answer
484 views

Grouping over multiple data dimensions (pivot)

I am logging an Events table, and want an output (as seen at the bottom of this answer), the issue is that I am getting the data in rows, but want them to be displayed column-wise. The two dimensions ...
0
votes
2answers
792 views

copy package from schema B to schema C

I am in the next situation: I am using oracle 11g. I am connected to an user, lets say schema1, where are a lot of permissions. I want to create a script which will copy the Package1 (and its body) ...
0
votes
2answers
101 views

Understanding multiple indexes with MySQL (and performance)

I have a "phones" table with around 120 000 records, it contains phone_id, phone_number, phone_user_name, phone_last_contacted, etc. The phone_id is index and looks like: 1,2,3,4 ... 120 000. But I ...
0
votes
1answer
50 views

Query Optimization for added value

I have a query that's behaving a bit oddly. In my database I have a table called "records". It tells me a bunch of information about what applications a user ran on my company's machines. I'm ...
1
vote
1answer
153 views

Suppress repeated performance condition alerts

I have set SQL Server performance condition alert with details as follows: Object : SQL Server:Databases Counter : Percent Log Used Instance : My database name Alert If ...
0
votes
3answers
3k views

Can I give the same name to a table and a stored procedure?

Is it possible to name a stored procedure the same as a table? I have an existing table named 'buyers', and I'm trying to create a stored procedure named 'buyers', but I'm getting this error: ...
-1
votes
2answers
123 views

How do I avoid duplicate rows using FREETEXT?

I have the following query: SELECT cat.CategoryId,cat.CategoryName,cat.CategoryImageURL,cat.CategoryImageData, ap.AppName,ap.AppImageData,ap.AppDetails,ap.AppId FROM Category cat,App ap WHERE ...
2
votes
2answers
608 views

How to create Combination of records (Order does not matter, no repetition allowed) in mySQL tables

I've got a table that has hundreds of rows, each row is a recipe with nutritional information, for example: recipe_table: id | calories | protein| carbs | fat recipe1, 100, 20g, 10g, 2g ...
-1
votes
1answer
2k views

how to export postgresql database table into mysql

I am trying to get data from a Postgres database, but I am totally new to using Postgres. I am here to ask my question to get some ideas from the best answer on how can I can do this. If possible, I'd ...
0
votes
2answers
721 views

How to index for a query with independent range conditions?

What is the best way to index a table that I query using independent range conditions? E.g. WHERE X < ? and Y > ?
6
votes
2answers
367 views

Should I add a column or 1-1 table if property is usualy null

There's a new unique property we need to add, which is relevant only to a specific subset (less than 1%). We thought it's better to add a new table which will be 1-1, than to add a new column which ...
0
votes
1answer
59 views

strange “using where” in simple query

I have a table with this structure: mysql> describe user_groups; +----------+----------------------+------+-----+---------+----------------+ | Field | Type | Null | Key | ...
4
votes
2answers
586 views

Open source and commercial tools to build dynamic queries of fact tables in star schema [closed]

What user interfaces or tools (commercial and/or open source) can query a star schema model (Ralph Kimball dimensional model)? So for example, if we have X fact tables, and Y dimension tables, and Z ...
0
votes
1answer
1k views

How to Drop tables being a SYS user

I am not being able to drop my tables using : drop table <table_name>; command. It says "the table is referencing primary keys of some other tables as foreign keys." , and when I tried to ...
20
votes
3answers
8k views

Running total with count?

As the title suggests I need some help getting a running total in T-SQL. The problem is that the sum I need to do is the sum of a count: sum(count (distinct (customers))) Say if I ran the count ...
1
vote
2answers
143 views

Sub-query in update function

I have a really terrible set of data that I've inherited and part of my job is going through and cleaning it up to something that's actually usable. Currently, I'm trying to update a column in my ...
1
vote
1answer
83 views

DB Certificates [duplicate]

I hope this is the right place to as this question. I just earned a Bachelor's degree in Management Information Systems and I'm interested in becoming a Database Admin. However, I'm a little confused ...
1
vote
1answer
173 views

How to link a customer to a country when the city/state isn't known

We have a situation where medical systems are sold to hospital groups, but at the time of the order, we don't always know into which state and city the system will be installed. We always know the ...
2
votes
4answers
8k views

Search every column in every table in Sybase Database

I'm been taxed with the task of creating an application that pulls data from our Micros Point of Sales system. The POS is using a Sybase database running on one of our servers. The database schema is ...
0
votes
3answers
1k views

Indexing for query containing xml column

I have below queries which performs little slow.So i am planning to create index.I created primay xml index and now performance improved little bit(by looking at execution plan) .Queries are shown ...
0
votes
1answer
539 views

How to set CHECK_POLICY OFF in the sql script

While installing our software in a HP laptop, we got a SQL error stating "The password does not meet windows policy requirements because it is too short." When I checked, the local security policy in ...
1
vote
1answer
620 views

Alter table move taking long time

I'm currently trying to compress a table in Oracle with the following statements: ALTER TABLE MYTABLE COMPRESS FOR OLTP; ALTER TABLE MOVE; My question is: the MOVE operation is taking forever and ...
3
votes
3answers
770 views

Simple XML .query SELECT statement times out on 1 SQL SERVER instance

I dropped and recreated a stored procedure on a DB on a SQL Server 2012 instance (SERVER1/INSTANCE1), after which the sproc started hanging on a line. Using profiler I have reduced a recreateable ...
5
votes
5answers
6k views

How to select from a table without including repeated column values?

In a previous question How to merge data sets without including redundant rows? I asked about filtering redundant historical data during import, but @DavidSpillett correctly replied that I couldn't do ...
2
votes
2answers
212 views

how to make a particular field into seperate columns?

Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - 64bit Production. I have this table in the below format: No | User | Value 01 | Port | Funds 01 | Vip1 | Systems 02 | Port | Bank ...
1
vote
0answers
48 views

A pre-existing hierarchial table as relational

Currently the database contains something like so (these are the main fields but there's a large amount more): +----------+----------------+----------+ | Agency | parent | main_term ...
1
vote
1answer
4k views

Converting ER diagram to tables and relationships in sql

Department : Branch is 1 : M Branch : Course is 1 : M Branch : Student is 1 : M Branch : Applicant is M : N Applicant : Student is 1 : 1 These are the conditions prescribed in the ER diagram. ...
1
vote
1answer
281 views

GROUP_CONCAT with ORDER BY , but results are not ordered

The following query works fine SELECT *, (SELECT GROUP_CONCAT(url SEPARATOR '$$' ) FROM project_photos WHERE project_id = projects.id ORDER BY priority) AS images FROM projects WHERE catID = 2 LIMIT ...
3
votes
2answers
67 views

Viewing the SQL of a view from a backup set

I have a full backup of my database from 4 days ago. It is a standard SQL 2008 .bak file. What I'd like to know is if its possible to view the SQL to a View that is in the database I backed up without ...
1
vote
1answer
25 views

MySQL Grouping Error

I'm trying to run a query on a table to see how many unique users have a usage record in the system at a given point. I've been working with the following query, but I've yet to see a proper result. ...