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
votes
2answers
171 views

SQL Profiler - Insert values?

I setup an SQL profiler to run, but I am not seeing any values for updates/inserts. Is there a way to see them? All I see is stuff like this: insert into some_tbl(id, col1, col2, col3) values ( @P0 ...
2
votes
3answers
4k views

How to JOIN two table to get missing rows in the second table

In a simple voting system as CREATE TABLE elections ( election_id int(11) NOT NULL AUTO_INCREMENT, title varchar(255), CREATE TABLE votes ( election_id int(11), user_id int(11), FOREIGN KEYs for ...
1
vote
1answer
4 views

Not able to update MySQL table using Oracle: Unknown column in 'where clause' {42S22,NativeErr = 1054}

I have the following tables: MySQL table: jti_member_interact CREATE TABLE `jti_member_interact` ( `INT_MEMBER_ID` int(11) NOT NULL, `INT_ID` int(11) NOT NULL AUTO_INCREMENT, `INT_SOURCE` ...
0
votes
0answers
9 views

Outer Apply vs Left Join Performance

I just came across APPLY in SQL and loved how it solves query problems for so many cases, Many of the tables I was using 2 left join to get the result, I was able to get in 1 outer apply. I have ...
4
votes
5answers
10k views

T SQL Table Valued Function to Split a Column on commas

I wrote a Table Valued Function in Microsoft SQL Server 2008 to take a comma delimited column in a database to spit out separate rows for each value. Ex: "one,two,three,four" would return a new table ...
0
votes
1answer
20 views

The materialized view is already optimal and cannot be tuned any further

I have tried DBMS_ADVISOR.TUNE_MVIEW to verify some materialized views created locally. One of the result returns an error: Error report: ORA-13600: error encountered in Advisor QSM-03116: The ...
0
votes
0answers
4 views

Users Characteristics

I'm really battling an issue where I have a Users table that has a growing number of user characteristics (regligion, smoking preferences, etc). The strategy I've used thus far has been to add a ...
0
votes
1answer
96 views

Is it possible to speed up this PARTITION BY query?

I've got a timeserie table. Each datapoint has also a statut field which indicates its providing source. I'd like to request last available datapoint as of date T but there could be several results, ...
0
votes
2answers
21 views

How to implement a dynamic string into a (prepared) sql statement?

I have some spatial datasets which are available in a open source metadata catalog software GeoNetwork and in a PostGIS database. The problem is that the student who created the database used ...
0
votes
2answers
11 views

Is there a PostgreSQL query command that returns the field types of a query,table or view?

Is there a PostgreSQL query or command that returns the field names and field types of a query,table or view?
0
votes
0answers
21 views

Relational or non-relational database for a system to pass objects on?

hopefully this is the right place to ask this kind of question. I am working on a system that focuses on helping people give away things that they don't use anymore. So, an object typically has the ...
0
votes
0answers
23 views

Double subquery is very slow, but independently they are fine

I have this query: SELECT mac, pid, node_category.name, status, computername, user_agent, detect_date, regdate, unregdate, last_dhcp, node.notes, (SELECT ip FROM iplog WHERE iplog.mac = node.mac ...
1
vote
1answer
67 views

DB2 LUW Query Optimization - IXSCAN timerons greater than total timerons

Sorry - I feel like this is a newb question, but I can't find anything on it. In optimizing a query, I was able to apparently reduce the total timerons from 3,700 to 38. However, on closer examination ...
1
vote
1answer
25 views

Break AG Cluster

I have a 2 node cluster setup and we use AlwaysOn HA with it. Currently we have two AG's and each one has three separate databases in each AG. We want to break the cluster and have three databases ...
0
votes
1answer
45 views

Replication in mysql with many servers

There are 3 shops. In each of these is a mysql server. I want all servers to synchronize their date if at least one server changes the date. I read a bit of literature and realized that I need ...
1
vote
1answer
676 views

Why does Oracle SQL*Plus consider two queries executed together on the command line as a syntax error?

Consider: SQL> select sysdate from dual; SYSDATE ----------- 22-Aug-13 0 SQL> select sysdate from dual; select sysdate from dual; select sysdate from dual; select sysdate from dual ...
2
votes
2answers
541 views

Loop through all databases and remove all users

We are doing a conversion from one system to another which is requiring backup/restores. I am trying to create a process that will remove all users after the restore on the new servers as no user ...
2
votes
1answer
30 views

Fastest way to change column type from varchar2 to number on large table in Oracle

I have a table which contains a VARCHAR2 column that must me changed into NUMBER. The table contains more than 30 millions rows. The table definition : CREATE TABLE EFF ( MOD ...
-3
votes
0answers
14 views

what is inventory cleansing and data cleaning? [on hold]

Can anyone tell me the complete process of inventory cleansing and data cleansing in a data base?
2
votes
2answers
69 views

GROUP BY one column, while sorting by another in PostgreSQL

How can I GROUP BY one column, while sorting only by another. I'm trying to do the following: SELECT dbId,retreivalTime FROM FileItems WHERE sourceSite='something' GROUP BY seriesName ...
0
votes
1answer
34 views

Frustrating SQL Server and VS Express 2013 Issue

I recently reinstalled Windows and am trying to set up SQL Server again with an existing database. I've tried installing SQL Server 2012 and 2014, and continuously get the same error. The error says ...
2
votes
3answers
4k views

SQL Server 2008 Database Restore Error - Cannot open backup device 15105

I am trying to restore from a backup and getting the following error Msg 3201, Level 16, State 2, Line 1 Cannot open backup device 'Z:\FULL_BACKUP.bak'. Operating system error 3(failed to ...
0
votes
2answers
25 views

Adding DATETIME() and Status column with xp_FileExist result

I'm trying to add a two columns in addition to the results of xp_FileExist. Here's my T-SQL: DECLARE @path varchar (100) DECLARE @file varchar (100) SET @file = '<location>\*.txt' SET @path = ...
0
votes
1answer
44 views

Update table from different table

UPDATE RBI.RBI_OV_F_DETAIL A SET (BRANCH_ID, BRANCH_NUMBER) = ( SELECT PRICE_BRANCH_ID, PRICE_BRANCH FROM RSE.RSE_SO_F_ORDERS B WHERE A.SOURCE_ID = ...
5
votes
5answers
5k views

SQL Query Formatter

Are there any (Linux based) SQL Query Formatting programs/plugins/extensions? I use PostgreSQL and MySQL but other DB's are welcome as well. I can use a VM to test with but would prefer a Linux ...
1
vote
1answer
21 views

mysqldump - select table in database only if it contains a specific string

(I'm new to Database Administrators, and am not a Database Administrator. However I originally asked this question on Stack Overflow (here) but didn't get any answers. Sorry if this is not the right ...
0
votes
1answer
49 views

CROSS APPLY versus INNER JOIN

I was reading a lot about cross apply versus inner join recently. I tried writing some query and they both work kinda same, execution seem to be same aswell. Maybe someone with a deeper knowledge ...
1
vote
0answers
53 views

SQL select top X rows having sum limit

I am using SQL Server 2012, I have a table with a format such as : MyOrders : ID -> PK int Cost -> float Category -> int I want to get the following : Input : category (lets say 2). ...
0
votes
0answers
56 views

Stored Procedure's Commented line causing issues [on hold]

We have a stored procedure which works as the sample mentioned below: CREATE PROCEDURE [dbo].[sdp_Test_Update] ( @ID int OUTPUT, @File_ID int, ...
0
votes
2answers
175 views

How can I optimize this query and support multiple SKUs?

My current query only can select one SKU at a time. I can leave salesite_id constant. If there is a way to also have varying salesite_ids that would be good too, but not necessary. Also any ...
3
votes
2answers
4k views

Selecting data from multiple rows into a single row

I have a table that has columns like following. Batch number is a database design thing like row number demand_id batch_number debit status customer 34 1 ...
1
vote
0answers
28 views

How to add SQL Server in networks list?

After changing my PC name and workgroup, I am no longer able to connect to SQL Server. Currently in my servers list I have only Home & localhost. Anybody know how to add server to networks list? ...
0
votes
3answers
49 views

Excel - How can I use a SQL query to retrieve data on a database sever?

I have connected to a SQL server in Excel . I want to be able to import data from a table located on the server. However this table is too big to import into Excel, I'm talking millions of rows. I ...
3
votes
2answers
158 views

How to optimize a log process in MySQL?

In my project, I have about 100.000 users and can't control their behavior. Now, what I would like to do is log their activity in a certain task. Every activity, is one record which includes columns ...
1
vote
4answers
4k views

Recursive self joins

I have a comments table, which can be simplified down to this: comments ======= id user_id text parent_id where parent_id is nullable, but might be a key for its parent comment. Now, how can I ...
1
vote
2answers
25 views

sp_publication_validation procedure doesn't seem to work properly

I am trying to use sp_publication_validation stored procedure to validate that my replication setup is working correctly. This procedure is pretty straightforward and is described here. I am running ...
1
vote
3answers
40 views

Can set unique constraint in table have data not unique SQL Server? [duplicate]

I have a table with has many rows, I want to set unique constraint for this table, but the column that must be unique, has data is not unique. Is any way to set unique constraint for this table for ...
1
vote
3answers
98 views

Why MAX() of SUM() giving wrong output?

I have a table employee id name salary city 1 ram 50000 c1 2 sham 20000 c2 3 jadu 80000 c1 4 madhu 90000 c4 5 hari 10000 c2 6 gopal 34000 c3 7 ...
-1
votes
2answers
25 views

My database is missing and disappeared after detaching it

I have detached my database from SQL Server 2008 and unfortunately I do not know its path and by my connection string I extract its exact name and searched it but it is disappeared from my computer. ...
2
votes
1answer
798 views

“No row was updated error” in SQL 2012 - worked fine in SQL 2005 and 2008

I have a database that currently lives in SQL Server 2005. We are currently looking at upgrading to SQL 2012. I installed 2012 in a test environment (Windows Server 2012 virtual machine). Backed ...
0
votes
1answer
19 views

Row-level subquery caching?

I have a query that uses a CTE which contains millions of rows. I plan to call this query many times, and the CTE returned each time will have most of the same rows. Is it possible for me to cache the ...
0
votes
0answers
5 views

Using range types (with GiST index)

Say I have 2 tables with a PostgreSQL range column: CREATE TABLE events ( id serial, during tsrange ); and CREATE TABLE storms ( id serial, during ...
1
vote
1answer
17 views

Index on integer column not helping. Help? (EXPLAIN ANALYZE output inside)

The table market_trades has an integer column market_id which takes values from 1 to 5. This seems like a pretty straightforward query to get the number of trades on each market: WITH markets AS ( ...
1
vote
1answer
36 views

Optimizing a query on a large table (EXPLAIN ANALYZE result inside)

I have a table market_trades with a timestamp column: api_production=# \d market_trades; Table "public.market_trades" Column | Type ...
2
votes
3answers
71 views

Make IN clause behave like AND clause

I've asked the same question on stackoverlow, but got no answer, so that's why I'm asking it here (I've read that simple sql questions should be asked at SO, but I have no choice). Suppose I have 3 ...
0
votes
0answers
21 views

Combining 2queries: One filtered Users on Role, One Select users with only one specific role

First query: Selects All users with specific rid ( 3 or 4 or 19 or ...). SELECT u.uid AS uid, u.name AS name, fn.field_full_name_value AS field_full_name_value FROM users u LEFT OUTER ...
-3
votes
0answers
70 views

SQL Query Consuming lot of CPU Usage:

Following SQL Query is Consuming lot of CPU Usage: SELECT * FROM (SELECT REQ.* FROM provisioningrequest REQ, unique_id_mapping UN WHERE ( instance_name IS NULL ...
-7
votes
0answers
53 views

What's new in SQL Server 2014 T-SQL since SQL Server 2008 R2? [on hold]

I want to upgrade my sql server from 2008 to 2014 and I wanna know what's new in programmability T-SQL enhancements.Now I'm installing 2014 to make few T-SQL tests. Thanks
0
votes
2answers
411 views

SQL Server 2012 linked server to SQL Server 2000

I am trying to select through an linked server from SQL Server 2012 to SQL Server 2000. The linked server has been setup and I can browser the target database through the linked server which ...
1
vote
0answers
47 views

How to handle many columns / variable schema?

I apologize in advance in case this question has been asked already. I'm working on revamping a reporting application used within my company. The requirements are: Support addition of new fields ...