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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-2
votes
1answer
36 views

Usage of COALESCE? [closed]

Today: table abc a b c d ---- ---- ---- ---- 1 null 2 3 null null null 7 null 5 null 4 1 = e 7 = b 5 = f 3 = i 2 = w 4 = o The Goal is to retrieve this ...
0
votes
2answers
57 views

Single query for searching for records without knowing what the search column is for

I have a single line search where i should be able to search for address or city or zip or state. I should be able to show data of what ever that matches for the typed in word. Suppose user had typed ...
2
votes
1answer
25 views

SELECTs in Database Change Log and Source Control

We are overhauling the way that we store our database in source control and keep a change log of it. I was reading the following article: http://thedailywtf.com/articles/Database-Changes-Done-Right, ...
2
votes
1answer
111 views

Should database be denormalized if I need an index across multiple tables

I have a catalog of album and song names. The song has a foreign key to the album table. I expect queries like: SELECT * FROM song s JOIN album a ON a.id = s.album_id WHERE LOWER(CONCAT_WS(' ', ...
3
votes
1answer
89 views

How to index for timestamp queries

I have a products table where I insert around 150,000 records a day. Most of them are redundant, but I need to keep them because of the new expiration date. I get product feeds from about 5 vendors a ...
19
votes
2answers
12k 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 ...
0
votes
2answers
54 views

Database Design - Cardinality

I am currently studying for my MTA Database Fundamentals cert, and I came across this question during my studies. However, the answer doesn't make any sense to me. Here is the question/answer: It ...
0
votes
3answers
47 views

Load specific element from XML

I have the following xml: <root> <123 type="line"> <aa type="item"> <value>1</value> </aa> </123> <234 type="line"> <bb type="item"> ...
0
votes
1answer
351 views

DELETE from Linked Server table using OPENQUERY and dynamic criteria

I'm attempting to run a DELETE statement from my local MSSQL Server to delete appropriate records from a table in my remote linked server using OPENQUERY(). I'm using the following code, but it seems ...
0
votes
0answers
20 views

Insert Unique Records into Linked Server Table (from SQL to Oracle)

My issue is that I am trying to load only unique primary key records into oracle from sql. In the insert into stored proc statement I tried doing it by where primary key does not equal primary key ...
0
votes
1answer
21 views

Postgres: Disable “similarity” column output on “SELECT SIMILARITY”?

I've tried disabling similarity column output on SELECT SIMILARITY but still cannot. Below query will generate a column similarity: SELECT SIMILARITY(title, 'Nation'), title FROM gallery WHERE title ...
1
vote
1answer
573 views

What are alternatives to Replication to distibute data (Microsoft SQL Server)

Is anyone knowledgeable of alternatives to SQL Server replication? I have a scenario where separate databases will share a lot of the same data which complex queries will match against. We want to ...
0
votes
1answer
27 views

How to serialize on SQL server metadata?

I tried to find an answer in Kalen Delaney's SQL Server Concurrency but there is no mention of metadata. The problem is how to ensure that only one of these reads and index creates executes from one ...
0
votes
2answers
149 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, ...
5
votes
2answers
83 views

Why do so many queries have aliases? [closed]

I've spent a lot of time searching for, researching and implementing various complex MySQL queries over the last several years. Many of them use lots of aliases for tables, even when none are ...
6
votes
2answers
67 views

Select lowest ID and calculate deviation from the lowest

I'm trying to create a view. I have some data in my SQL Server database, and I want to order them by their mark1 and mark2. Now when I sort them I want to select the mark1 who has the lowest mark2 and ...
1
vote
2answers
188 views

Postgres multiple columns to json

I am running postgresql 9.3.4. I have a table with 3 fields: id name addr --- ---- ---- 1 n1 ad1 2 n2 ad2 ... I need to move the data to a new table with fields like: id data ...
1
vote
4answers
64 views

Getting an aggregate (here: min) for a group of values [closed]

Example table: ID | value A | value B ---------------------- 1 | abc | 3 1 | def | 5 1 | ghi | 1 2 | cba | 9 2 | fed | 4 I want the ...
1
vote
1answer
821 views

Removing Secondary Replica from SQL Availability Group Causs Large Log File

Due to an unforeseen hardware error, I had to take our secondary replicas down for maintenance. This was really due to a storage issue and, it was decided at a higher level, to purchase a new storage ...
0
votes
0answers
30 views

What is wrong with my ERD?

I am trying to create a reservation/booking ERD. Is their anything wrong with my current ERD? It must show a supertype and subtype, and it must identify attributes for regular, weak, and associative ...
1
vote
1answer
50 views

How to Get one Single statement of two table value in SQL

I wanted to retrieve two table values in one single statement such as, (Example Bank statements..) Table 1: Invoice SELECT ClientNo, InvoiceDate, InvoiceNo, TotalDue FROM Invoice_TBL WHERE ...
0
votes
1answer
32 views

Select records as groups based on sequence and date

I have data stored as: CompID | Seq | Udate | Utime --------+-----+-----------+------- mx433 | 1 | 1/1/2012 | 13:54 mx433 | 1 | 1/2/2012 | 13:43 mx433 | 2 | 1/4/2012 | 14:23 mx433 ...
0
votes
2answers
39 views

How can I find table name for each row result?

How can I find the table name for each row result in my query? I have tried ideas suggested on the stack network (overflow, dba) 1 How to make a table name an attribute in PostgreSQL? 2 ...
0
votes
1answer
19 views

How do I merge two rows only if there is the TagWidgetIds are same but the tagValues are different?

I have this stored procedure which generates the following output. The query which generates the output from the stored procedure is as follows: SELECT tat.[agent-id], ...
1
vote
2answers
125 views

Limiting read access in postgres to few rows

We have a requirement where we want to limit the maximum no. of rows that a select query can return when its done using a particular login. So basically we would like to append a limit clause to any ...
0
votes
0answers
15 views

Searching a keyword from multiple tables using my querry , [migrated]

I want to search "law" from three tables tbl_books, tbl_books_author and tbl_books_subject. I am running following query. SELECT * FROM tbl_books p, tbl_books_author d, tbl_books_subject m WHERE ...
1
vote
2answers
137 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 ...
0
votes
2answers
44 views

How to get several specific records from a query result?

I know by using Like with "LIMIT 1, OFFSET x" I can get the Xth record from a returned query result. But what if I want to get X, Y, and Z all at once? Currently I do a for loop and it's like I'm ...
2
votes
1answer
261 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. ...
2
votes
1answer
95 views

search xml column inside large table (7 million rows)

Database design: Table Name : Plays ( 6 million records) Columns: Play id, col1, col2......col7, PlayFieldValues PlayFieldValues xml column. sample xml stored in this column <PlayAttributes> ...
4
votes
1answer
92 views

Finding all joins required to programmatically join a table

Given a SourceTable and a TargetTable, I would like to programmatically create a string with all joins required. In short, I am trying to find a way to create a string like this: FROM SourceTable t ...
1
vote
1answer
42 views

How can a dba at a non-profit heathcare SMB use existing customer data to find out information about potental customers? [closed]

Now maybe this isn't a question for a dba Q&A board, I could be wrong; If I've misjudged this, please send my question elsewhere in the SE network. I work at a non-profit healthcare SMB, and ...
-1
votes
0answers
119 views

Hbase Shell: query for scanning rows with specific multiple columns [closed]

New to Hbase, don't have hive or impala configured. :-( wanted to scan rows of a table based on multiple column values let say having Table A with 4 columns aa, ab, ac, ad. I wanted all rows of the ...
2
votes
1answer
72 views

How to display the query result separately for each item in an IN clause? [closed]

Maybe it's a novice question, but I am trying to get the sum of balances for each account present in the table. I am trying the below Select SUM(BALANCE) from dbo.account_balances ...
0
votes
1answer
407 views

SSIS Package Execution From Visual Studio Unit Test

Hello I am attempting to run a test which contains the following code: string pkgLocation; Package pkg; Application app; DTSExecResult pkgResults; ...
2
votes
1answer
1k 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 ...
0
votes
0answers
8 views

SQLAnywhere: How to apply function to list members?

I'm a newbie to SQL Anywhere... what a difference from the big O! I'm working in SQL Anywhere 12. I have a query that returns a column values that are a list of big int numbers, EXAMPLE: ...
0
votes
0answers
36 views

Find the Minimal Basis

Suppose we have relation R ( A ,B ,C ,D ,E ) , with some set of functional dependencies, and we wish to project those functional dependencies onto relation S(A, B, C). Given the functional ...
1
vote
1answer
590 views

Tree structure hierarchical query sorting

I have the following structure of table. CREATE TABLE table1 ( serial_num integer NOT NULL, parent_num integer, parent_key text, key_ary_num integer[], level integer, rank integer, ...
1
vote
1answer
32 views

Selecting the correct row given multiple input value combinations

I have a table that stores part numbers for various items like so: +------+-------------+-------------+-------------+ | Item | Color | Type | Part Number | ...
0
votes
0answers
20 views

I want to sync local mysql database and live server mysql database

My plan is 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'm have a inventory ...
0
votes
0answers
11 views

How to capture a manager highest level from bottom in mysql?

So I have a giant table of 100K employees. Every employee has a supervisor except our top boss. I want to capture a manager's level from the bottom. Sounds simple but now I have a series of views ...
1
vote
1answer
131 views

UPDATE with CASE with 2 tables

I have 2 tables and I want to update table2 with criteria of table1 and table2. The criteria are: 1.table1.amount > 10000 2.table2.flag is null or table2.flag = '0' So if the 2 conditions are ...
8
votes
4answers
11k views

What does the term “projection” refer to in an SQL query (or view definition)

In Oracle's document The Query Optimizer, under View Merging, I found the following information The view merging optimization applies to views that contain only selections, projections, and ...
4
votes
3answers
17k views

Login to SQL Server using Windows Authentication

I have an (.Net Console App) EXE which connects to various SQL databases using SQL server Authentication with appropriate credentials. Now there is change required in the EXE to use windows ...
0
votes
2answers
41 views

SQL query to list software by major versions

I have the following code i am tiring to get it to only show one line in the results for each major version, i need to combine all of the rows that are the same Like so. SELECT COUNT(arp.displayname) ...
0
votes
1answer
56 views

Querying really slow Postgres

I have multiple tables on Postgres wit GIS and when I query SELECT * FROM rxmsg JOIN Vehicles ON rxmsg.vid=Vehicles.vid JOIN stops on ST_DWithin(rxmsg.point, stops.point,1000) JOIN drivers ON ...
0
votes
1answer
39 views

Optimizing key lookup in subquery with UNION ALL

I am trying to optimize following query (little bit more complex actually, but this is important part): SELECT Id, StatusDate, [...Lot Of Columns...] FROM ( ( SELECT Id, StatusDate, [...Lot ...
9
votes
2answers
3k views

SQL Server's READ COMMITTED SNAPSHOT vs SNAPSHOT

I was researching the differences between SQL Server's READ COMMITTED SNAPSHOT and SNAPSHOT isolation levels and came across the following resource: Choosing Row Versioning-based Isolation Levels ...
0
votes
1answer
36 views

How to convert rows into columns and query on them in Mysql?

I have three tables Patients, which contains the name of my patients, Controls which represents the UI controls which could be drawn for each illness , and ControlsValues table which contains the ...