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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1
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2answers
481 views

After Restore Log_reuse_wait_desc of Replication

I'm wondering if anybody has ran into this issue before and has any suggestions on what's causing it/how to fix it. We are restoring a database into lower Dev environments and after the restore the ...
0
votes
1answer
30 views

A form including content from two tables

I am working to create a database of all the places or administrative entities of one country. Most work will be about adding new districts. I have to detail which region every district belongs to. ...
0
votes
1answer
53 views

SQL Server 2012 Exclude a value

I'm teaching myself SQL, and I ran into a scenario that I cannot seem to solve. Please any help. I have a table called tblRecord with a column called BuyerID, in this case there are two BuyerIDS, and ...
5
votes
2answers
67 views

Using Left or substring with wildcard in SQL

I am looking to retrieve information from a field, but am having troubles getting exactly what I want. The information I want has no set order and I am also looking for two different things. Here is ...
0
votes
0answers
17 views

Using pipelined order by while fetching only first ten rows

PostgreSQL 9.2 I have the table table: id user_id amount PK integer integer and I need to fetch the first 10 rows as follows: SELECT user_id, SUM(amount) s FROM table GROUP BY ...
0
votes
1answer
145 views

How to perform same DML statements on two different servers (Oracle and SQL-Server) simultaneously

I have two servers, Oracle and SQL-Server. I have same database on both the servers. I want to perform DML (insert,update,delete). How can I perform same DML statements on both the servers ...
4
votes
0answers
54 views

Find Shoe Size Selection

I'm developing a feature that allows users to input their foot dimensions and have the proper shoe size returned to them. I'm having difficulty deciding on the best way to implement this feature. The ...
0
votes
2answers
108 views

sqlite group_concat error while executing query

I have table: CREATE TABLE www ( Col_1 VARCHAR, Col_2 VARCHAR ); select count(*) from www; --1496 And I have error: "Error while executing query: aggregate function are not allowed in ...
6
votes
4answers
319 views

Store millions of rows of denomalized data or some SQL magic?

My DBA experience doesn't go much further than simple storage + retrieval of CMS style data - so this may be a silly question, I don't know! I have a problem whereby I need to lookup or calculate ...
2
votes
0answers
137 views

Sync a local MySQL database and a live server MySQL database

I want to store data in my local MySQL database and after a time interval or when system connected to internet it will update my live MySQL database remotely. Is it possible? I have an inventory ...
4
votes
1answer
73 views

Better database design

I'm using a MySQL database to store data from my java application. In java I have two classes: The VocabularyList class has a name and holds a list of vocabularies. A Vocabulary has a vocabulary ...
2
votes
1answer
103 views

SQL Server 2012 - Dropping Snapshots takes hours

We recently did a SQL Server upgrade from 2005 to 2012. We have a nightly job that drops a snapshot of an active database. The snapshots gets created again later in the day. Before upgrading, in SQL ...
5
votes
2answers
81 views

Combining data from multiple rows

I am relatively new when working with queries so let me apologize in advance. This is a MS 2012 Server that I will be working with. This data has been brought into a staging table through a nightly ...
3
votes
1answer
69 views

SQL Joins and Relationships

I am confused by joins. I want to know how to choose the join based on the relationship between tables, or do joins have no dependency on relationship? if relationship is "one-to-one" then "Inner ...
3
votes
1answer
112 views

Query looks optimal but logical reads is huge

I run the following (really simple) query in SQL Server: SELECT MAX(PK_Field1) FROM MainTable kh WHERE kh.PK_Field1 >= '2014-12-01T00:00:00' AND kh.PK_Field2 = 1572 AND ...
1
vote
1answer
25 views

Create one row for every user in a Postgres table

I have a bunch of rows of users in a users table, for example: | id | name | |----|-------| | 1 | Chris | | 2 | Max | | 3 | Steve | For each one of these users, I'd like to create a row in ...
2
votes
1answer
62 views

MySQL - Ordering 'featured' items first

I need to have the results of a query show featured items first for a given date before listing the day's other items. You can ignore the categories that are being pulled from another table. ...
0
votes
1answer
102 views

how to clean huge Dbwarden QueryHistory table

dbwarden is Comprehensive database monitoring solution for SQL Server 2005+ which i am using. i found that dba_LongRunningQueries – Runs every 5 minutes. This will run usp_LongRunningQueries to ...
1
vote
1answer
32 views

Calculate column running total

Given the following schema and dummy data: CREATE TABLE transactions ( id SERIAL PRIMARY KEY, memo VARCHAR(255) NOT NULL, amount INT NOT NULL, tx_date DATE NOT NULL ); INSERT INTO ...
1
vote
0answers
20 views

Update remote MySQL database upon changes in local SQL Server database

I have a Web store running with MySQL on the remote host. And I have inventory management software using Microsoft SQL Server on my local system. I want to update product stock in the web store when ...
1
vote
1answer
236 views

Query to get reposts from people the user is following

I have a table posts where all the posts by users are stored, the structure of this table is as follows. | post_id | post_user | post_content | post_date | The users table is as follows. | user_id ...
0
votes
1answer
348 views

How to exclude weekends and holidays in a query

I have been tasked with creating a flat file. One of the fields that I need is a date field. I need the disco date to be LAST_EVENT_PROC_DT + 12 unless that date falls on a weekend or holiday,if so ...
3
votes
1answer
67 views

4m Rows in MySQL, ~5 Minutes to Run Query

I have 2 tables, a users table and a log table which literally logs each time a user signs in. What I'm trying to do is grab a list of all users with a certain rank who have not logged in for over a ...
3
votes
1answer
1k views

SQL Server stored procedure working when run manually, not running from SQL Server Agent

I have a procedure that runs fine using the execute command in SSMS, however putting the same command in a job gives the following error. line 9, character 9, unexpected end of input The code ...
3
votes
1answer
70 views

Display non-null and null count using case statement

In total there are 10 values in my table, 5 of which are null. I need to display the count using case statement in Oracle, like output below: Sample Data: +------+ | Eid | +------+ | 1 | | 2 ...
1
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2answers
41 views

MySQL Escape Characters

I'm getting an SQL error when trying to mix a match against in a SQL statement with a specific character which is not covered by MySQL escape functions in PHP. This is an example: The name to ...
1
vote
2answers
47 views

How to optimise MySQL query that uses dependent subquery

I have a web app that has a custom feed of images. The image queried are based on whether the users have previously seen the image and ordered by a Hacker News style score. There are only 1000 rows ...
2
votes
1answer
939 views

SQL Timeout to Principle Server Error

I am seeing a timeout to the Pricincipel SQL server (2008 R2) The exact error I am seeing is this: Timeout expired. The timeout period elapsed prior to completion of the operation or the server ...
13
votes
9answers
749 views

Alternative to WHERE clause [closed]

Is there a way to only SELECT rows with certain data in a column, without using WHERE? e.g. If I had this: SELECT * FROM Users WHERE town = 'Townsville' is there a way to implement the WHERE ...
0
votes
0answers
32 views

How to make a query from a database with schemas to a database without schemas, and vice versa, with DBLINK in postgres

I have a DB (DB1) in postgres 9.4 who use DBLINK to query another DB (DB2), and vice versa, using views and functions. But now i have to add 2 schemes to DB1 (CLIENT1 And CLIENT2) and i want when i ...
58
votes
8answers
5k views

Does SQL Server read all of a COALESCE function even if the first argument is not NULL?

I'm using a T-SQL COALESCE function where the first argument will not be null on about 95% of the times it is ran. If the first argument is NULL, the second argument is quite a lengthy process: ...
4
votes
3answers
5k views

Test if any fields are NULL

I'm trying to figure out an easy query I can do to test if a large table has a list of entries that has at least ONE blank (NULL / empty) value in ANY column. I need something like SELECT * FROM ...
7
votes
1answer
93 views

sysschedules datatype choices

I am curious, why does SQL Server save the values in msdb.dbo.sysschedules for date and times as int instead of datetime. I assume the reason dates back to something in SQL Server 2000. Was it a ...
3
votes
2answers
23k views

Using Same CASE WHEN Conditions For Multiple Query Columns

Is there a "better" way to rewrite a SELECT clause where multiple columns use the same CASE WHEN conditions so that the conditions are only checked once? See the example below. SELECT CASE ...
1
vote
1answer
234 views

Resolving Cyclical Reference in Referential Relationships

I'm designing a small SQL Server Compact Edition database and am attempting to enforce referential integrity. The database is a simple backend for a small desktop application that functions as an ...
2
votes
3answers
69 views

Generate a list from columns that do not contain a zero for each row

I have a table TAB1 in an Oracle database: +----+----+----+----+----+----+ | ID | C1 | C2 | C3 | C4 | C5 | +----+----+----+----+----+----+ | 1 | 1 | 0 | 3 | 0 | 5 | | 2 | 11 | 22 | 0 | 44 | ...
0
votes
1answer
22 views

Returning rows based on time of day respective to their timezone [closed]

I also posted this on Stack Overflow. I got no answers there so I'm hoping someone here might be able to help. I have a table in which every row represents a user, I am also storing the user's ...
-1
votes
1answer
62 views

How can I generate a script to choose only top 10 items from each table in SQL database?

I know how to generate scripts that would contain insert queries of all records in all tables. But how can I limit this to top 10 records only from each table?I can select "Data Only" when generating ...
1
vote
1answer
43 views

Merging adjacent date intervals into a single row

Here is the scenario: If the employee transaction is continuous display as-is. if the employee got any gap display as a new row. Below is the sample table Emid Fromdate Todate ----- -------- ...
1
vote
1answer
32 views

can i shrink log file in full recovery model

i have configured Always on Availability group where iam unable to shrink log file size through simple recovery model. can i shrink the log file size in full recovery model if yes or possible then is ...
3
votes
4answers
4k views

How to make SSMS upper case keywords

I recently started using Management Studio 2012. When using MySQL Workbench, a handy feature was that I could stay all in lower case and any reserved word (like SELECT, INSERT) would convert to upper ...
1
vote
1answer
492 views

Optimising a query of an SSRS dataset

Consider the query given below: SELECT * FROM ((SELECT c.cust_id , c.username , REPLACE(qs.seg_type_ref_key_02, 'N/A', 'Non Vip') casino_group, ...
22
votes
2answers
13k views

Timeseries: SQL or NoSQL?

I don't care about the general differences between SQL and NoSQL (or their traditional differences). I am currently looking at altering the storage of our internal time series. They all contain ...
6
votes
2answers
151 views

FOR XML could not serialize the data because it contains character (0x0000)

I have a big query (if necessary I will post it here) and I'm getting this error: Msg 6841, Level 16, State 1, Line 1 FOR XML could not serialize the data for node 'NoName' because it contains ...
2
votes
1answer
52 views

SQL query to identify missing hinted indexes

We have a fairly large number of queries using index hints in our 11.2.0.4 database. I recently uncovered some performance issues and found that some of the indexes referenced by the query hints were ...
4
votes
1answer
45 views

How to deduplicate SELECT statements in relational division?

I have a query that does a lot of duplicate work: SELECT visitor_id, '1'::text AS filter FROM events WHERE id IN (SELECT event_id FROM params WHERE key = 'utm_campaign' AND value ...
0
votes
1answer
30 views

Oracle: How to create secondary index based on every word in a CLOB

I have a Table where each record is made up of a VARCHAR2 and a CLOB. The VARCHAR2 is the primary key. There are currently 1.5 million records and growing. The table is only ever used for REGEX ...
0
votes
1answer
53 views

How to insert values through inner join

Could anybody tell me how to do insert statement with inner join. i am trying to insert ProductName,ProductCompany,ProductPrice,ProductQty in Product table and CategoryName in category Table. And ...
0
votes
3answers
3k views

Can I give the same name to a table and a stored procedure?

Is it possible to name a stored procedure the same as a table? I have an existing table named 'buyers', and I'm trying to create a stored procedure named 'buyers', but I'm getting this error: ...
2
votes
1answer
32 views

Extend a single week's win/loss ratio calculation to a whole season

I'm quite inexperienced at SQL, and I'm trying to improve a query in a small project. The database schema looks somewhat like this. (I've reduced to relevant information, if there seems to be ...