Structured Query Language (SQL). For questions about the language, not Microsoft SQL Server (tag sql-server).

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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 ...
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1answer
120 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 ...
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1answer
206 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 ...
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1answer
231 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, ...
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1answer
99 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 ------------------------- --------------------------- ...
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3answers
3k 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 ...
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2answers
356 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
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2answers
795 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 ...
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2answers
226 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 ...
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1answer
3k 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
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1answer
658 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 int,...
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0answers
300 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 ...
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0answers
2k 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 [ServerA].<...
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1answer
1k 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
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1answer
69 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 ...
4
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4answers
17k 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 [dbo].[...
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1answer
64 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
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1answer
47 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
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1answer
469 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. ...
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1answer
6k 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. ...
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1answer
739 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 be ...
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0answers
41 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 ...
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2answers
248 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 ...
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1answer
6k 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 ...
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3answers
142 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 ('bar'),...
2
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2answers
153 views

Tables names in a supertype/subtype schema [closed]

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 ...
2
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1answer
307 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 ...
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0answers
632 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
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1answer
56 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 ...
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1answer
34 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.
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1answer
8k 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 ...
3
votes
0answers
706 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 ...
1
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1answer
57 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(), ...
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1answer
10k 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, RIGHT(a....
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0answers
382 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 ...
3
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2answers
248 views

Build Restore History table

We restore a database daily that we download from an FTP site. I would like to build a history table that tracks when the database is restored on our SQL Server. This is easy. My issue is sometime ...
1
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1answer
680 views

Populate one table with data from another one on selected cells

I have a problem with filling empty cells in one table with data from another one. I got a table with user emails - some of the fields are empty, some are already containing emails. I gathered the ...
7
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1answer
514 views

T-SQL - OPTION (FAST x) and trace flag 8722

I have searched a long time and still haven't found the answer to my problem. Our Dynamics AX is generating queries with the query hint OPTION (FAST x), which sometimes forces a bad execution plan to ...
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2answers
3k views

How to split one big table that has 100 million data to multiple tables? [closed]

I have one database in SQL Server 2012. In it there is one table that has more than 100 million rows. I want to split that table to multiple similar table with 1 million rows in each table. What is ...
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1answer
157 views

When you type an SQL query in interpreter, what does happen? [closed]

Actully this question is asked in an interview from me . When you type an SQL query in interpreter, what does happen? How is the query processed?
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1answer
63 views

Checking for multiple identical values in a Posgresql array

I have a simple table in Postgresql: CREATE TABLE data (id integer, values integer[]); INSERT INTO data VALUES (1, '{1,2,3,4,5}'); INSERT INTO data VALUES (2, '{1,1,2,3,4,5}'); INSERT INTO data ...
1
vote
1answer
55 views

How can I log the way in which a job was started?

Using SQL Server Agent, I've created a Job that runs some SQL. This SQL does some work on one database, then adds a row to a logging table on a separate database. The Job is run on a couple of ...
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1answer
362 views

how to group data against more than one conditions

I have a table named Employees with below two columns. ================== Employees 1- EmpId (auto incremental id) 2- EmpName (varchar) There is another table named 'LateDays' with below five ...
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0answers
312 views

Update Duplicate record in select query of access

I have a select query (test) in access with below mentioned column ID 2561 2562 2563 2343 2561 2563 2563 Now in ID, i have duplicate records , for example here 2561 , 2562 , 2563 are ...
1
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1answer
5k views

Database design for an online babyShop ,Toy shop

Hi i'm designing a database for a toy shop this shop offer many products with different categories. boystoys,girlstoys,puzzles,beds,stroller, etc i designed my database as it is consists of 5 tables ...
0
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2answers
815 views

ORA-00838 error after increasing MEMORY_TARGET

I've increased MEMORY_TARGET in pfile and then create spfile. I'm getting the same problem as before: ORA-00838: Specified value of MEMORY_TARGET is too small, needs to be at least 3084M The ...
2
votes
2answers
187 views

Find all users who rated all the movies rated by a specific user

So we have the following relational schema: users(user_id, ..) movies(movie_id, ..) ratings(user_id, movie_id, rate) So, we want to find all the users who have rated all the movies which are rated ...
2
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1answer
177 views

Supertyping Inventory Transactions

I am trying to wrap all interactions with inventory items into one transactional table. Currently I calculate QoH by querying multiple fact tables (production, acquisition, shipment, return order, and ...
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2answers
392 views

PostgreSQL - summing arrays by index

I have an array of doubles column (double precision[]) in PostgreSQL that keeps half hour values for a day. So each array holds 48 values. I need an efficient query that is summing all this array ...
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0answers
82 views

MYSQL Tables Join Filtering For Favorites

I am in need of some help figuring out the best way to join separate tables I am using. I am essentially trying to output a list of schools (first table in MYSQL) where one column is an empty star ...