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 ...

learn more… | top users | synonyms (1)

0
votes
0answers
5 views

Query plan reads vs statistics io reads

I have a very strange problem. When I run a query with SET STATISTICS IO ON, it shows that I had a total of 183 reads. But when I look at the query plan dmv it shows I did 555,132 reads. I cleared the ...
1
vote
1answer
41 views

Recursive CTE to find unique slug

I have an article table where I want the slug to be unique. CREATE TABLE article ( title char(50) NOT NULL, slug char(50) NOT NULL ); When the user enters a title e.g. News on Apple, I want ...
1
vote
0answers
6 views

INSERT INTO SELECT OPENQUERY() failing with PK conflict

I'm trying to pull rows from a View in MySQL (via a Linked Server) into a local SQL Server table which is basically a local table with a table structure that "mirrors" the view. The following code is ...
0
votes
0answers
5 views

storing query results in a variable in mysql and using it in another query

I have a following query which runs perfectly fine: SELECT count(*) as total,l.state as state FROM db1.table1 cd inner join db2.table2 l ON ...
0
votes
1answer
11 views

How can I create a bool column for a view based on the result of a statement?

I'm using PostgreSQL as my database. CREATE TABLE groups ( id SERIAL NOT NULL, name TEXT NOT NULL, PRIMARY KEY (id), UNIQUE (name) ); CREATE TABLE users ( id ...
0
votes
1answer
19 views

Merging 2 queries together

I have 2 query results that need merged together where periods are alike, adding a the column 'seats', using a '0' the period doesn't exist. Before: tdate period staff ...
0
votes
0answers
5 views

Can MySQL Index Merge an Composite index with a single column index?

I am tuning a query and currently have an index as following : Index 1 : (col1, col2) An example query would be : SELECT * FROM t1 WHERE col1 = '1' AND col3 = '2'; I have created an index on ...
3
votes
3answers
1k views

SQL Server dates - can I get date and hour?

In SQL Server, can I do the equivalent of to_char(date_field, 'YYYY-MM-DD:HH24') in Oracle to get 2012-01-30:23?
1
vote
1answer
50 views

Identify unattached File Size in SQL Server

From a similar post on this forum, I have modified the below code as per comments and able to get the orphaned files in the drives. The code is : EXEC sp_configure 'show advanced options', 1; ...
0
votes
0answers
7 views

Get products of category plus all child categories till leave nodes

We have a hierarchy which looks this: Now the problem is that most products are only connected with 1 category, which is most of the time the lowest level. I am trying to get ALL products below a ...
2
votes
0answers
19 views

Can I convert SQL Server 2008 full db to SQL Server 2005?

Recently I converted my SQL Server 2005 database to SQL Server 2008. Now I can't attach that db to SQL Server 2005. I do not have any backup of that db file as well. I have tried to generate scripts ...
2
votes
0answers
13 views

How to store a 64-digit key of alpha numerical values into MySQL Database

I am student studying in Database Administration (first year), one of our task requires a to design a login form for corporate and regular users. Below are the requirements for the username and ...
3
votes
3answers
64 views

Help with SQL Query to XML output

I have the following query: SELECT [ID] AS [NewID] , ( CASE WHEN LEN([MiddleName]) > 0 THEN [LastName] + ', ' + [FirstName] + ' ' + LEFT([MiddleName],1) + '.' ...
0
votes
0answers
22 views

How do I get the count for time periods?

I have a table with the following columns. [ComputerGroupid], [Computerid], [Userid], [loginTime], [logoffTime] And my requirement is to get the table with the below information ...
0
votes
1answer
23 views

Suspended query causing high CPU usage

Environment detail: SQL Server 2008 R2. I have applications running on JBoss that access the DB using JDBC driver. Issue: My online DB server was experiencing high CPU usage. Using the ...
2
votes
1answer
84 views

SELECT query with DISTINCT on a table-structure for graphs is very slow

I have 2 tables where nodes contains about 60m rows and edges about 500m rows (both growing fast). These two tables represent a directed graph. CREATE TABLE edges ( node_from bigint NOT NULL, ...
0
votes
1answer
15 views

Need help in putting the single quote and constant timestamp in plsql

Please help me in appending the Single quotes and constant timestamp to my query output. Given below is the expected output from my param file. Note: Query is executed through sqlplus Expected ...
2
votes
1answer
32 views

How do I create a partition using a bit field in SQL Server 2014

I have a table where data is archived. I need to keep this data as it is rarely viewed. Instead of moving archived data to a separate table, I wanted to create a partition on the Archived field. When ...
0
votes
1answer
21 views

join on just the next closest date?

I want to get a table of [file], [folder], [DateAdded], [DateRemoved] I have a log table of changes that has [file], [ChangeDate], [OldFolder], [NewFolder] Files have moved in and out of ...
0
votes
0answers
12 views

Slow Query Performance - Can't Debug

I have a MySQL query that I am trying to debug the performance issue but cannot. I know that the majority of the query is reading/processing rows (Sending Data state). However, in the explain output, ...
0
votes
1answer
11 views

Select Count on Big table take 15 minutes

I try to run select Count on table with like 16M rows, with MySql 5.5 and workbench 6.2. The query running almost 1000sec . Is it normal? The query : SELECT COUNT(1) FROM My_Table when I run ...
-1
votes
2answers
23 views

How to Shift a column up in a ring buffer? [on hold]

I am amazed this question doesn't seem to have been asked before, but if so, my pretty exhaustive searches have not discovered it. I have a simple ring buffer of temperatures in a column from which I ...
0
votes
1answer
14 views

DELETE from OPENQUERY alias not working

I'm trying to use the following code to execute a DELETE statement on a linked server. I'm trying to delete all records from the remote server where there is a match on a certain ID field in both the ...
0
votes
2answers
106 views

SQL Server 2012: Full Text Catalog taking up all the disk space

We have created full text catalog and index for a pretty large table. The column on which the index is being created has a datatype of varchar(max). The problem started as soon as we started ...
0
votes
1answer
23 views

SQL Server Chain Permission

We have the 2 databases. Reporting HR There are some users who want to extract data from HR database. But we don't want to give direct access to that HR database. So, we created the special ...
1
vote
2answers
32 views

Filling in date holes in grouped-by-date SQL data

The actual problem involves far more data and joins, but I've created a small sample to demonstrate the issue: -- create example table DROP TABLE dbo.EventRecords GO CREATE TABLE dbo.EventRecords ...
0
votes
1answer
16 views

can I use many-to-many relation with weak entity

I have an entity, for example employee(key employee ID), and every employee can have multiple responsibilities. Every responsibility can be tasked to multiple employees. I have 3 options: 1) Create ...
2
votes
1answer
14 views

Suspect (Torn) Pages recorded in TEMPDB? (SQL Server 2005 SP3)

I have a virtualised SQL Server 2005 (SP3) server that reported the following msg: Database_Name, Database_Id, File_Id, Event_Type, Event_Type_Desc, Error_Count, Last_Update_Date tempdb, 2, 1, 3, ...
3
votes
1answer
25 views

the <set clause>'s <multiple column assignment>

I just know a little sql basics and need to write a plain sql syntax highlighter/checker So I'm fighting through the standard... I stumbled over somthing I'm not sure I understand it right, as I never ...
0
votes
3answers
35 views

Prevent auto commit of DROP without SET AUTOCOMMIT OFF

I dropped my table and I lost my data and I can't roll it back because DROP statement automatically commits. How can I prevent auto commit action of DROP without using SET AUTOCOMMIT OFF?
0
votes
2answers
20 views

ASPStateTempApplications and ASPStateTempSessions tables creation in tempdb after sql server restart

I have a implemented SQL server session state management. So created ASPState database and ASPStateTempApplications and ASPStateTempSessions tables in TEMPDB database. When I restart SQL Service, ...
0
votes
0answers
9 views

How is it called when a DB supports FOR XML and XQUERY?

I have my SQL Express 2008 R2 database, on which I heavily rely on two features: Generating XML from relational tables (using FOR XML) Generating relational data from XML (using XQuery) I wonder ...
0
votes
0answers
20 views

How to compare between two values in one field depending on another field in SQL* / Oracle Reports?

I have three fields in a table named table_family. One is "relation" it has 3 kinds of values 1 for person, 2 for parents, 3 for son. Other field is "age" and it contains the ages of all the ...
0
votes
0answers
13 views

How to copy architecture of an existing database to a new database in SQL Server

I'm using Microsoft SQL Server 2012 (SP1) - 11.0.3153.0 (X64) Express Edition (64-bit) on Windows NT 6.1 (Build 7601: Service Pack 1) (Hypervisor) and I need to copy the database ...
0
votes
3answers
59 views

I do not understand SQL Server Transaction Logs

I understand that a Microsoft SQL Server Database has two components: A database file A transaction log file Whenever I make a change to a table, does it get written to both the database file AND ...
-1
votes
1answer
19 views

Sorting a table based on nullable Position field that has to match the position on the result set

I'm using SQL Server 2012 I have a simple table that has a Nullable (int) Position and a (datetime) Created field. I would like to do a select * from this table order by created desc but ...if a ...
0
votes
1answer
8 views

Trigger syntax on phpmyadmin

I can't make this work. I want to create a trigger that deletes the child foreign keys before I delete the parent primary key. This is the code that I am using on phpmyadmin: delimiter // CREATE ...
1
vote
0answers
39 views

I can't divide 2 count(*) values without returning zero

The statement I'm using is for a KPI in Maximo and I currently have this statement: select (select count(*) from incident where incident.slanum = 'USERADMIN' and incident.actualfinish > ...
1
vote
1answer
44 views

Delete back ups more than 2 weeks in sql server

I am not a DBA, I need to delete the USER_DATABASE backups older than 2 weeks. Is this below stmt work for this scenario? EXECUTE dbo.DatabaseBackup @Databases = 'USER_DATABASE', @Directory = ...
0
votes
1answer
48 views

Secondary File Group is not online in SQL Server

In my database there are two file groups PRIMARY and SECONDARY. The .ndf file is in SECONDARY file group. I just wanted to backup only the secondary file group. So ran following T-SQL... BACKUP ...
2
votes
1answer
637 views

SQL Server 2008 R2 cluster installation error

I was trying to install SQL Server Cluster (Launch wiard to install single node SQL Server 2008 R2 faliover cluster) .. The setup checks displayed no error and the installation started after all the ...
1
vote
1answer
16 views

Create a log file for check which time import has been done and to split the import files

How to create a log table for when does the last import has been done and also for Query for split the records in to 1000 while importing. to avoid the bulk insert For example : If the data ...
2
votes
2answers
26 views

Get all (non repeated) distribuidores with their paises given a producto_solicitud

I have this schema: And as title says I need to get all records from fabricante_distribuidor by given producto_solicitud.id value. I'm doing in this way: SELECT ...
1
vote
1answer
141 views

Sql Server sys.Traces log

Working with traces on production server I found some mysterious entries to me in sys.Traces, When I run below query it shows me status of all traces as ‘Paused’ along with entries in ...
2
votes
1answer
129 views

Alter table and update in sql server transactions

I'm trying to do an alter table to add a new column on a table, then I would like to do some update on the existing rows in the table to add a value to the recently new added column and finally do a ...
0
votes
2answers
172 views

mysql need help optimizing query

I have a table containing servers logs, and another table containing rules to match certain and drop them. The logs tables contains around 1 million rows, and there are about 20-30 rules. The ...
-1
votes
3answers
66 views

Should tables with very large records quantities be split into multiple tables

I'm working on an application (asp.net) that deals with a very high record count -- let's estimate about 75 million events per year coming in fairly evenly throughout the year, and each of these ...
0
votes
1answer
49 views

SQL command to copy over 8,000 table entries [on hold]

I have an SQL Server 2008 database, I want to copy the items from one table (about 8000 entries) to a new table, an this be done with the parent ID to link it to the correct record. I'm using a ...
0
votes
1answer
89 views

Text Storage and Database Design Optimization in a SQL Server Database

Given a database with a number of columns (c), where some of these columns contain text that is one of multiple values due to a set CONSTRAINT on the columns, what is the most efficient way to ...
0
votes
1answer
44 views

GROUP BY Returning Different Totals

I have two very similar queries that are returning different totals. The first query, where the total [of subscription_payment.price] is calculated with PHP (and verified in Excel), is the same query ...