An acronym for "Structured Query Language" (it's not the name of a specific DBMS product), SQL can be used in relational database management systems (RDBMS) to query, update, delete, and insert data as well as modify the structure of the database. It can also be used to manage schemas and data ...

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2
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2answers
339 views

pull records that are inactive

I need help with this query. I have records in customer table Main table - M +---------+---------+----------+ | company | Account | Active | +---------+---------+----------+ | A | A123 | ...
1
vote
2answers
328 views

MySQL Cluster Node Connections

I am a brand new user to the MySQL cluster world (literally hours). I was following a tutorial just to get a simple cluster set up (one management node on one machine, a second machine with a SQL node ...
3
votes
2answers
594 views

SQL Server consuming all my CPU

I already have a question on gis.stackexchange.com assuming it may be geoserver the problem but as I go deeper into problem I found that I have a database bottleneck. My SQL server CPU usage is almost ...
1
vote
2answers
140 views

Get Total in a single line in SQL Server

I have a very simple SQL Query which is getting results in the following way COLUMN A COL-B WINDCHILL 99.998889 WINDCHILL 96.000000 Now how i can modify my query so that I get the ...
3
votes
3answers
501 views

SQL JOIN Syntax in MS SQL

I have been taught in my MSSQL classes, this is how to join two tables select * from FirstTable A JOIN SecondTable B on A.ID= B.ID Now in my professional life, I came across JOIN queries like ...
2
votes
3answers
564 views

Identifying rows which don't match a master row

I'm comparing a bunch of tables from different databases on different servers to a Master record. I need to know which servers, identified by locationID, have the non-matching rows because they might ...
2
votes
1answer
4k views

TSQL Get minute part from time data type

With the time data type (I'm using Microsoft SQL Server 2008), is there any way to take only the minute part out of it? I tried to pass the time to datepart and datediff function but both refused to ...
1
vote
2answers
2k views

LEFT JOIN conversion to INNER JOIN, can't change FROM clause

I have 2 tables: BASE is master and is linked with CHILD via field ID: Left outer Join / 1:N relation. These 2 tables contain historised data, defined by 2 date-fields: start_date and end_date. ...
2
votes
2answers
77 views

Data Backup and Restoring the same if requried in SQL SERVER 2008

In Multi-tenancy , Shared Database Shared Schema. How to take Tenant level backup and restored the tenant data when required? Can any one guide me or point me to the right direction. Thanks!!! NB: ...
4
votes
2answers
1k views

Help with this SELECT in the same table

I have this table structure: id1 id2 1 2 1 3 1 4 2 1 2 5 I need to build a query to select id2 where id1 is not in id2. For example if id1 = 1 then only id2=3 and id2=4. I tried ...
1
vote
2answers
399 views

Managing features for a real estate agency [duplicate]

I have a database table real_estate where the basic information is held (id, status, sku, address, building_type, sales_status) and now I want to attach features to that real_estate table. The data ...
1
vote
1answer
394 views

Migrating data in SQL Server from source to target with schema change at target

We have a strange scenario. We have a source database running on SQL Server 2005 where we push data to a target database running on SQL Server 2008 R2. The source database table has 5 columns. The ...
3
votes
2answers
722 views

Select total number of records from common table expression

We are using common table expressions to temporarily save the search results. WITH Results ( ------ ) AS ( select --- ) SELECT * FROM ...
7
votes
1answer
253 views

Table order in Join Query

if i say: Table1 left join Table2 is it the same as saying Table2 right join Table1 ? In other words, should i expect to get the same results from 2 identical queries where the only thing that is ...
1
vote
0answers
214 views

Cannot Check if the Access Database Engine is Installed and Configured

All, I want to check if the Access Database Engine is installed and linked to SQL Server. On my development machine (x64-bit) the following queries both show the Access Engine to be avalible as a ...
0
votes
1answer
3k views

How can I select the latest record having one state where no later records exist with any other state?

I want to select the last record (by datetime) having a given state where no later records exist with any other state for each given "widget". widget state timestamp ------ ----- ...
1
vote
1answer
140 views

Which should be used after messing up clustered index? Update statistics, Reindex or Reorganize

If I have a clustered single column index, e.g FooId in SQL Server 2008, 2012 and I know I have messed up the order of the rows to not have sequential order of the FooId column anymore, which ...
9
votes
2answers
6k views

Subqueries' aliases same as main queries' aliases

I have an SQL query whose aliases are the same as some of its subquery's aliases. For example: select * from ROOM r where ... ( select * from ROAD r ...
2
votes
1answer
881 views

Oracle SQL Loader - load file where record is composed of “n” delimiters

How would you write a control file for Oracle SQL Loader that treats each record as being composed of 3 commas? I have read the documentation, however I cannot find how to handle this scenario, ...
5
votes
1answer
232 views

Oracle: DB *partial* constraint?

I am pretty new to Oracle and the database world. I am not sure if the title makes any sense at all, so I'll just go ahead and explain my situation. I currently have a table at hand that records ...
2
votes
3answers
176 views

Setting up database structure for Students, Managers, and Administrators

I'm trying to figure out how to set up the structure for users. Users can have multiple Managers and Managers can manage multiple Business Units. Administrators have full control of the system. I'm ...
2
votes
1answer
2k views

Is there any way to get the position of a value in a table returned by a SELECT statement?

I have the following statement: SELECT id FROM myTable WHERE aCondition == 1 ORDER BY id which returns a table like this one for example: id 1 3 4 5 But what I need is to know the position of a ...
1
vote
2answers
257 views

Join on clustered tables shows greater cost than non-clustered tables?

I have created a cluster and have two tables emp and sep on the cluster. When I do the simple query... explain plan select * from emp_cluster join dep_cluster using (dno) the cost is 26. I ...
3
votes
1answer
155 views

SQL Calculation based on 'similar' rows within table

I'm using SQL Server 2008 R2, building a fact table for SSAS. I can therefore accept solutions to this via either SQL query to SSIS task. Let's say I have a fact table that looks a little like this, ...
4
votes
3answers
2k views

PostgreSQL - Help Optimizing SQL performance - full text search

I have a big table ~15M records called entities. I want to find top 5 entities matching "hockey" in their name. I have a Full text index built for that, which is used : ...
4
votes
3answers
5k views

What does NVL stand for?

What does NVL stand for? I'm talking about the Oracle and Informix (perhaps some others too) function used to filter out non NULL values from query results (similar to COALESCE in other databases).
2
votes
0answers
260 views

Oracle faster overlap check [closed]

We've a table with two columns beginrange and endrange, which contain hex values. To this table no overlapping ranges should be inputted. We had implemented the check by having a composite functional ...
3
votes
2answers
133 views

SQL Statement Help… Ignore already existing rows

I have a table with a foreign key constraint and the command below gives me an error because it's trying to set a value that already in the provider table. How do I update this command to ignore ...
218
votes
4answers
66k views

What's the difference between a temp table and table variable in SQL Server?

This seems to be an area with quite a few myths and conflicting views. So what is the difference between a table variable and a local temporary table in SQL Server?
4
votes
3answers
1k views

How can I write a proper query to JOIN all of these tables without duplicates?

Let's say I have four tables: TABLE: players COLUMNS: id, first_name, last_name TABLE: passing_stats COLUMNS: id, year, passing_yards (several other passing columns) TABLE: rushing_stats ...
3
votes
1answer
397 views

See actual results of SQL UPDATE command

Is there a way to get the actual results of SQL UPDATE command (ie the table rows themselves), not just get the number of rows (other than by converting the UPDATE command to a SELECT)? I'm using ...
1
vote
1answer
2k views

pg_restore: [archiver] unsupported version (1.11) in file header postgresql

My server is working on Ubuntu with PostgreSQL 8.4 and the development machine I'm using has Debian Lenny with PostgreSQL 8.3. My machine can't be upgraded to PostgreSQL 8.4 and I need to restore a ...
1
vote
1answer
108 views

SQL Data type for “Reference” fields in table - SQL Server

I am learning SQL Server. I need a bit of advice regarding data type for fields that will be referred to but will not actually themselves require values. I don't know the correct term to use(edit ...
2
votes
2answers
2k views

One query two MySQL servers

I have two MySQL servers on different server computers. Is it possible to execute single query like this: INSERT INTO database1.xxxxx SELECT table1.field1, table2.field1 FROM database2.xxxxx INNER ...
1
vote
0answers
71 views

Drill down report links fall outside cell [closed]

Apologies for the vague title, not sure how to summarise the problem... I'm creating a dashboard report showing server state for a group of SQL servers, the problem is that the links for the drill ...
-5
votes
1answer
7k views

how to query multiple row data in single column in oracle?

i have a table in which the values are id value ---------------- 1 10 1 20 1 30 2 33 2 34 I want the output given below using sql: id value ...
1
vote
1answer
617 views

how to see multiple column values in new line [duplicate]

Possible Duplicate: how to query multiple row data in single column in oracle? my table structure is given bellow deptid ename ------ ------ 10 CLARK,KING,MILLER 20 ...
5
votes
1answer
2k views

Changing ANSI_NULLS setting on a table

Can we use the following query to update ANSI_NULLS option. sp_configure 'allow updates', 1 reconfigure with override update sysobjects set status = status | 0x20000000 where name = 'tblClient' ...
2
votes
1answer
91 views

Change-set SQL optimization

I'm trying to clean up a change-set query that returns rows from a table that have changed since a given time and also do not exist in a known list of already previously returned results. select ID, ...
6
votes
2answers
158 views

Optimization: One time vs Staging

I ran into a situation with two options: Use a single query with a cost of ~0.07 INSERT INTO @vals SELECT ... FROM ... JOIN ... JOIN ... WHERE a.col = 1 OR b.col IS NOT NULL Use two ...
2
votes
2answers
1k views

Trying to optimize query for performance (MySQL)

So I have this table that has a lot of foreign keys but when I will a record, I need to join all on those tables because I generally need those fields for the record to make any sense. The basic ...
2
votes
3answers
2k views

Is it normal to use many Triggers?

I have many so-called summary columns throughout my database to count number of rows in other tables. For example, counting the number of comments by a user (a column in the user table). Currently, I ...
3
votes
2answers
7k views

How Does Oracle Handle Multiple Concurrent INSERTs Against One Table

I am trying to understand Oracle 11g a little more closely. My question is simple: how does Oracle handle two sessions that are attempting to insert records into a single table at the same time. For ...
2
votes
1answer
1k views

How to create a train schedule in SQLite3?

I am interested in what a SQLite3 database schema would look like for a train timetable. Generally this is presented in table format as the final result. Sample Schedule for M to F STATION A ...
4
votes
2answers
5k views

SQL Server 2008 R2 - Set tempDB size on full disk

One of my SQL Server 2008 R2 instances had a job that went mad last night, ended up with the job auto-growing tempDB until it ran out of disk space. To compound the issue I noticed that tempDB is ...
5
votes
4answers
2k views

CTE Running in Infinite Loop

My CTE runs in an infinite loop for a specific customer and I am not able to find out why. Here is the query: ;WITH ClassTree AS (SELECT ID, NAME, Parent_ID FROM ...
1
vote
2answers
254 views

PostgreSQL Database Migration

How can I migrate data from on PostgreSQL database to another PostgreSQL database? Is there any technique to migrate data with SQL scripting?
4
votes
1answer
8k views

Unique index corrupted SQL. Select query returns single row but create unique index fails

I am not able to repair my database due to below errors, when I run dbcc checkdb(DBNAME, REPAIR_ALLOW_DATA_LOSS) I am getting the errors listed here. When I run a select query for these key values, ...
8
votes
1answer
979 views

What are the security implications of sp_executesql?

By default, in SQL Server, the [public] role has EXECUTE rights on sp_executesql. However, I've inherited a database server where the previous DBA has revoked the EXECUTE right on sp_executesql. As ...
0
votes
1answer
2k views

querying multiple values from one column [closed]

we have a table called transaction_details. when i write this query SELECT DESCRIPTION, item, cust_code, pack_description, uos, pack, total_value, total_value_vat, total_value_goods, price_indicator ...