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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1answer
65 views

Query output conditional upon values in dataset

If the number column contains values 5 AND 6, AND the value X exists in the chr column, I would like to exclude rows with 10 in the test column. But, if the number column contains values 4 AND 5, AND ...
2
votes
1answer
164 views

PostgreSQL return second 'Group' as an array

I have some tables that include websites and visitors and I am trying to write a query that produces a 'top 10' for each site, the tables look something like this... websites ------- website_id (pk) ...
5
votes
2answers
91 views

Is the runtime of checking for duplicate primary keys in SQL Server O(n)?

I was curious and I couldn't find too much info on this. Is it also O(n) for checking for duplicates among primary keys? Is it the same for most other SQL databases? Is there a place that lists this ...
5
votes
1answer
234 views

SQL Server stuck in single_user with auto_update_statistics_async on [closed]

Books online states Before you set the database to SINGLE_USER, verify the AUTO_UPDATE_STATISTICS_ASYNC option is set to OFF. When set to ON, the background thread used to update statistics ...
1
vote
1answer
148 views

Linking first and second level composite primary keys

I am trying to create a new database with a hierarchical structure of two many-to-many tables using composite keys. Unfortunately the creation of tables fails stating that the foreign keys do not ...
0
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1answer
23 views

Retrieve index column

I have this index schema: CREATE index comments_idx ON comments (books) How can I retrieve column name ("books") through SQL query?
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2answers
72 views

Get player count per match on a matchmaking server [closed]

This is my current structure of my matches table: id, title, description, max_players, host_username, host_ip and there's another table called matches_players: match_id, player_username ...
0
votes
1answer
100 views

How to order by Levenshtein distance?

I want to order a table according to a char field using Levenshtein distance or similar because some entries may contain underscores or grammar errors. It is a table with all the books I plan to read ...
0
votes
1answer
66 views

Complex query on big table

I have a big user table (3M), of structure: age (int) country (FK) city (text) gender (text) active (bool) My objective is to run a search finding 15 users of given age area, gender, city and ...
0
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1answer
68 views

SQL - Add column if match else, on aggregate data

I have an order table that roughly looks like this |Customer id |Date | revGBP |orderID |GiftOrder | --------------------------------------------------------------------- |1 ...
2
votes
1answer
456 views

Can you put a SQL DB on a NAS? [closed]

Can you put a SQL DB on a NAS drive? For example can I put the PostgreSQL DB "files" on a Sinology NAS or am I better to leave everything on a "real" PC? (like, say, a regular PC server running Linux) ...
1
vote
1answer
126 views

What's the term that describes filtering query that makes use of indexes

I am looking for a technical term that describes the type of query in SQL that makes use of indexes. I completely forgot the name and can not look it up anymore (there's even a Wikipedia article about ...
0
votes
2answers
37 views

How to use relationships to extract data via select

Disclaimer: Novice in SQL I have 3 tables. There is one "major" table (labeled used_for_lookup below) used to do look-ups on and the other two (labeled fid_table and did_table below) are foreign keys ...
1
vote
1answer
88 views

Question about the workflow/design process/tools used by professional database designers

I hope this in the right place, as it's really more a question about database design software than the philosophy and practise of database administration. I'm a masters student doing an "introduction ...
1
vote
1answer
105 views

SQL : get rows from two tables relatively

I've two tables named categories and products. Simple structure is given below. categories cat_id cat_name 1 c1 2 c2 3 c3 products prod_id ...
2
votes
1answer
155 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, ...
3
votes
1answer
68 views

How to join by most recent preceding date?

Imagine I have a database with historic price data and a second table with dates Item | Price | Date Customer | Item | date ------------------------- --------------------------- ...
3
votes
3answers
1k views

How to run sql agent jobs in a sequence order.with T-sql

My requirement is to run the SQL Agent jobs (EX: job1 to job10) with T-sql in a sequence order. That means job2 starts automatically when job1 completes. This process should continue until job10 ...
2
votes
2answers
311 views

Updating every cell of of a table?

I have a table with m columns and n rows. The ETL tools I was using wrote an empty ('') to every cell without a value and I would like them to be NULL instead. This got me thinking if it would be ...
4
votes
2answers
621 views

Restored Database is different from the original

I have recently performed a restore of our data-warehouse staging database onto a separate instance in our dev environment. After the restore I did a comparison and it looks like the database sizes ...
0
votes
2answers
160 views

how to select top ID from join operation and staging tables

I have this inner join from staging and operations table jobsCode I want to select the top surrogate key ID and get the Start_Date from this join my problem is my Query rerunning 2 records original ...
0
votes
1answer
1k views

Use if exists in postgresql [closed]

I know about the exists feature, but that does not help me with the given situation. What I want is: Check if some row exists, and if exists then check for an another row if row exists. Here's ...
0
votes
1answer
339 views

Generate All days in moth report using PIVOT of SQL server

My table, tblEmployeeScan(EMPLOYEE_ID varchar(7), ScannedTime) Everyday each employee scans 2 times, 1 time or 0 time Now I want to create store procedure Create proc spMonthScanReport @MONTH ...
0
votes
0answers
124 views

Accidentally deleted records in MS SQL Server 2014

I have a very big problem with SQL Server data lost. Recently, i have performed SQL replication. and i found out that all exising records/rows in the subscriber was totally erased and replaced by the ...
0
votes
0answers
1k views

Querying system tables from Linked Server

I am trying to query the syspublications table on Linked Server A from Server B. Both servers are running SQL Server 2012. Using this simple query on Server B: SELECT a.dest_table FROM ...
0
votes
1answer
398 views

Getting the entire records from Two tables for Count purposes SQL [closed]

I'm just wondering if anyone could help on how to bring two columns from two tables together in one table. These table have id's but they are not linked although they have other columns that I can ...
0
votes
1answer
47 views

Using count() and sum() in a calculation in a select

I am trying to do the following in a single select. We have a SAAS that has Company records and User records. A User is a member of a Company (Company.CompanyId = User.CompanyId). In the User record ...
1
vote
4answers
7k views

Execute permission denied on object sp_start_job

I need to allow a user to kick of a specific agent job without having any ability to start other ones. To accomplish this, I've created the following procedure (simplified): ALTER PROCEDURE ...
0
votes
0answers
20 views

PostgreSQL SELECT and JOIN question [duplicate]

Trying to fix the previous post text formatting issue there was and I did not recognize: I'm using PostgreSQL under ubuntu 14.04. I have two tables as below: create table material_base_name ( ...
0
votes
1answer
54 views

Help with optimising a sql query on two partitioned tables

I have a SQL query that I am running on two very large tables in SQL Server 2012 Enterprise The two tables are ACKs and Logs. Both are partitioned on their time by day column with the appropriate ...
1
vote
1answer
46 views

joins with “could be blank” conditions

Question is most probably stupid but I am stuck on this and cant think anymore(Pissed Off). I have these tables-> employee(has a column foreign to location),location and location_flag. And I need ...
2
votes
1answer
313 views

How to include concatenated values in a dynamic pivot column value?

I am extending a dynamic pivot query. The original query works fine. In the second query, instead of displaying the date as a value for the pivot column, I would like to display a concatenated column. ...
0
votes
1answer
3k views

How to add a default null row if no results from the dynamic pivot query [closed]

I execute this procedure and display results in my application. If my query does not return any results, I still need to print out the column headers and since its a dynamic query I cannot hard code. ...
0
votes
1answer
397 views

sql or hql query to find all parents of a particular record

I need a sql or hql query to find all parents of a particular record, that should work in oracle as well as mysql, for eg if I have the id: 201, the parents would be: 188, 187, 1. any help would ...
0
votes
0answers
35 views

mysql advanced query

I'm sorry for my English. I have a problem with db mysql. I have a table like this id|rat|time 1 |2 |12:00 2 |0 |12:55 3 |0 |13:05 4 |6 |13:45 5 |0 |14:00 6 |8 |15:00 7 |0 |16:30 8 |9 |17:00 ...
1
vote
2answers
146 views

How to configure Standby database in oracle for read/write

I have configured a physical standby database in Oracle 11gR2, and the standby database it's working fine. All the changes in the principal database are replicating to the standby database, the ...
0
votes
1answer
2k views

Procedure with Insert Data From One Table to Another Table

I have two tables Person with PersonId, Name,Address,Mobile and PersonLog with Id,Name,Address,Mobile,FK_PersonId. I am trying store the old data in PersonLog and Person to be updated. This is my ...
1
vote
3answers
122 views

Longest matching suffix while using aggregate functions

Background Looking to find the longest matching string suffix. Setup Consider the following fiddle: CREATE TABLE noun ("label" varchar(10)) ; INSERT INTO noun ("label") VALUES ...
1
vote
1answer
93 views

Tables names in a supertype/subtype schema

I have 3 types of users in my app. The users share some common attributes, but they also have quite a bit of stuff that pertains uniquely to each user type. I have a person table that contains limited ...
1
vote
1answer
181 views

Why does my MySql Savel replicate changes that are neither in binlog_do_db nor replicate_do_db?

I have a standard simple master slave replication that usually runs fine. But sometimes, all of a sudden, I get replication errors on the "phpmyadmin" table. I have explicitly only specified one ...
0
votes
0answers
408 views

SQL Mirroring synchronize logins and agent jobs

We have just started using SQL Server mirroring for several clients on SQL Server 2008 R2 Standard. We've got the SQL Server mirroring working fine however now we run into the issue of replicating ...
0
votes
1answer
54 views

Check for blocked queries periodically and cancel them

I have series of update queries which are executed every 5-10 seconds. Sometimes it happens that one of these will block all the pending update queries as for some reason it just freezes. Since I can ...
0
votes
1answer
28 views

View permissions on specific Oracle object

I want to be able to see what permissions have been granted on a specific object in my Oracle geodatabase. What would my syntax look like in SQL Plus? Thank you.
0
votes
0answers
33 views

Merge colums from two different databases using phpMyAdmin

Is there a way to: Replace all the data from database1 > table1 > column2 With Data from Database2 > table1 > column2 ONLY under the condition that the ID value in database1 > table1 > column1 ...
0
votes
1answer
2k views

How can I get all orphan records in a single query?

I just noticed few tables that has orphan records (foreign keys) that no longer point to any primary key. How can I query the tables to get a list of all such rows? When these parent records got ...
1
vote
0answers
316 views

How to represent directed graph with multiple parents?

http://dirtsimple.org/2010/11/simplest-way-to-do-tree-based-queries.html provides an algorithm for inserting and deleting from a Closure Table. I'd like to model a similar data structure, except that ...
0
votes
0answers
192 views

Column encryption/decryption using encryptbykey

Working on a project where I need to encrypt a few sensitive columns in a table but make the data available through a procedure that a user can execute through either a report or excel. In looking ...
1
vote
1answer
52 views

Choice of clustered key when almost all columns would be part of a unique index anyway

I am creating the following table CREATE TABLE dbo.COMM_SHELF_BLOCK_ACCESS ( KeyId uniqueidentifier NOT NULL ROWGUIDCOL CONSTRAINT DF_COMM_SHELF_BLOCK_ACCESS_KeyId default NEWSEQUENTIALID(), ...
0
votes
1answer
6k views

Conversion failed when converting the varchar value to data type int in SQL Server

While getting some data input, for below query, encountered Convertion failed error:- SELECT a.ProcessInstanceAppianID, a.ProcessInstanceDescription, CONVERT (INT, ...
0
votes
0answers
225 views

Please anybody help me with oracle db importing?

I try to import .DMP file with impd comand. root@HP:~# impdp SYSTEM/xxxxxxxxx log=4.log file=as.DMP and i get this ;;; Import: Release 11.2.0.2.0 - Production on Thu Oct 2 12:21:14 2014 ...