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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2answers
44 views

Reset the sequence of a serial PK with dynamic SQL

How can I dynamically reference a sequence name (as below) using a combination of strings and DECLARE variables? Is the code below proper or is there another method of doing this? My goal is to do ...
0
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0answers
22 views

How to write parent / firstChildLevel / secondChildLevel

I am still pretty new when it comes to SQL, but I am attempting to write Hierarchy of tables which will act as parent / firstChildLevel / secondChildLevel. I understand the reasoning behind it, but I ...
1
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1answer
32 views

Select all most recent records

I have this two tables (and their main fields): Target: Message: Id IdMessage Id IdMain IdReply DatePosted ================ ...
0
votes
1answer
63 views

huge table copy avoid duplicates

I've a table with more than 10 billion records. Many NEW records (in quantum of 40-50 million records)are added regularly in a file as input part of batch process at night. The active table is majorly ...
1
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1answer
61 views

Multi table GROUP BY query optimisation

Currently I have a multi table/column GROUP BY query which is pretty slow. Below is the tables schema used by the query: report Table ...
2
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0answers
18 views

Query optimization - contact should be extracted at most once for a particular customer

I have created a database for a telemarketing company Scenario is, the telemarketing company is selling contacts to the customers. Customers log on to the website and search for the contacts for ...
0
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0answers
35 views

Many to many update query

SQL Server 2012 Notification Source can have multiple deliveries type and each delivery type can have one notification templates (For future, Each delivery type can multiple templates). ...
1
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3answers
56 views

Select random 10 unique rows from MySQL database?

I have one table (questions) with 54 questions. The students have to answer all 54 questions. I have to show 10 questions at once, then next 10 and so on.... I have to select 10 questions ...
0
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2answers
35 views

Problems with Insert( simple query - can't think something )

I have 2 tables Tblservicedesk and Tblservicedesk_temp Collumns: CodServiceDesk ID_Solicitacao Solicitante Departamento Tecnico Grupo Status Prioridade ...
-1
votes
1answer
17 views

Run Sp on linked server 2008 [closed]

How could i run my sp on a linked server ? Using sql-server-2008 Exec my_sp [db-srv_name].[db-name].[dbo] Please help me i am new in sql
0
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1answer
18 views

Modify a value inside of a nested dynamic column

In the table (items), I have a dynamic column (attr). I have a very simple nested dynamic column. INSERT INTO items (attr) VALUES (COLUMN_CREATE('level1', COLUMN_CREATE('level2','level2_value'))); ...
0
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1answer
27 views

Sql Rank for records contain multiple combinations

I am trying to filter the records which contains multiple combinations and removing the records which contains a single combination. Database DB2 Query Used: select * from (select ...
0
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0answers
13 views

DB replication, each db their own distributor or use a single distributor?

this may be a simple question for most but I am a bit confused and could use guidance, I am not a DBA, however I need to present out case for servers to our DBA's I am looking to set up replication ...
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0answers
20 views

I need help in querying Database in extracting data which is present in rows as columns

Below is the format present in DB: xmlid seqnbr levelid code 05 01 a 1 05 01 a 2 05 01 a 3 05 01 b 1 05 01 b ...
1
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4answers
123 views

NVARCHAR column as PRIMARY KEY or as UNIQUE column

I'm developing a SQL Server 2012 database and I have a doubt about nvarchar columns as primary keys. I have this table: CREATE TABLE [dbo].[CODES] ( [ID_CODE] [bigint] IDENTITY(1,1) NOT NULL, ...
2
votes
0answers
36 views

Change Tracking across several Tables

I'm looking into providing DB level change tracking within my system. I need to be able to track changes at an entity level, rather than just individual tables. Right now, we have triggers on each of ...
0
votes
0answers
16 views

Deleting already duplicated Filestream Files

I have three FileStreams (FS1 on F drive, FS2 on H drive, FS3 on E drive) belonging to the same FileStream group of one particular database (DB) which is in Simple recovery mode in the SQL Server ...
2
votes
2answers
77 views

Database-agnostic stored procedure call passing array of name/value pairs

Background Looking to pass a set of name/value pairs into a stored procedure in a database-agnostic way, using JDBC. A database structure is defined as follows: CREATE TYPE array_parameters AS ( ...
1
vote
2answers
89 views

How to split url in sql server like this

Here is the url www.abc.com/a/b/c/d/e/f/g/h/i I want result like this www.abc.com/a/b/c/d/e/f/g/h/i www.abc.com/a/b/c/d/e/f/g/h www.abc.com/a/b/c/d/e/f/g www.abc.com/a/b/c/d/e/f ...
0
votes
1answer
21 views

Setting a column's default value by adding a constraint

I wrote this query: ALTER TABLE test2 add constraint setting_value33 default male FOR namee; But I get this error when running it: You have an error in your SQL syntax; check the manual that ...
0
votes
1answer
24 views

How do you use COLUMN_JSON with COLUMN_GET on dynamic columns in MariaDB?

When I do the following query; SELECT name, COLUMN_GET(attr, 'appearance' as char) as 'attributes' from items; I see the 2 columns including the blob data with the weird formatting. Is it ...
-3
votes
0answers
28 views

SQL pick 3 max values from 2 tables during the specific time period

I'm new here... Could you please help with this, probably simple, sql query. I need to: list 3 max values from two linked tables; Table A: (NAME, ID) Tom Clancy 123456 Homer Simpson 987654 Lisa ...
1
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1answer
21 views

Sql Insert into with duplicate key

Ok so, I'm still a beginner in databases. I have this code: $sql=" INSERT INTO complaints_members (password, complaint) VALUES ('$mypassword','$submit') ON DUPLICATE KEY UPDATE ...
0
votes
0answers
34 views

Why does the SQL Server 2012 SA account always show up with creation date of 4/8/2003?

Why does the SQL Server 2012 SA account always show up with creation date of 4/8/2003? I am not sure why this is happening and if this is something that needs to be resolved. I noticed that on ...
0
votes
1answer
25 views

Query performance with primary keys of different data types

Is there a significant difference in performance if i decide to use INT or BIGINT as data type of a primary key in a table? Of course if i use BIGINT the value will have twice it's size. But as the ...
0
votes
2answers
47 views

How to split a row in a result into mutliple rows

I have the following query: SELECT vs.MonthName AS Month, vs.Region, vs.Category, CAST (MIN (a.TotalAmount) AS money) AS ActualAmount, MIN (a.TotalCases) AS ...
0
votes
1answer
35 views

Nice query to get my friends

my table has this structure: User_ID | Followed_ID Example row: 33 | 36 Means that user 33 follows user 36. If exists a record like 36 | 33 then the two users are considered friends. ...
1
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1answer
34 views

Order by where conditions

SELECT * FROM table WHERE key REGEXP 'some long regular expression' OR key REGEXP 'some other long regular expression' ORDER BY key REGEXP 'some long regular expression' DESC, key REGEXP 'some other ...
1
vote
1answer
50 views

Can Execute trigger in SQL Server 2008 R2

I'm trying to create a simple trigger to update a table's column after it was inserted. But when I execute the trigger it produces an error: Cannot execute script. Additional information: Unable ...
0
votes
2answers
38 views

Optimizing a Postgres query with a large IN

This query gets a list of posts created by people you follow. You can follow an unlimited number of people, but most people follow < 1000 others. With this style of query, the obvious optimization ...
0
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0answers
35 views

How can I make a foreign key from a fragment of the primary key?

I have this table: CREATE TABLE Phones ( Brand VARCHAR(20), Model VARCHAR(20), PRIMARY KEY (Brand, Model) ); A mobile phone can't be uniquely identified just by its model (for example: HTC (One) or ...
0
votes
1answer
38 views

Convert an interaction matrix into a ternary relation

I have what I'm calling a sparse "interaction matrix" of data in MS Excel that I wish to convert into a "ternary relation" (table) in Access. The spreadsheet data are in this pattern: Name Act-1 ...
0
votes
1answer
58 views

Is there a reason my CTE with a basic subquery in the second stage of the CTE is failing?

Ok... anyone aid with this sorry...i've been playing with some of my works reports and i thought id found a way to mix two results into one when i came across a small issue... if i run my CTE code ...
1
vote
1answer
68 views

Modifying a non managed table partition

I ran across a partition that was initially setup (sql 2012) beginning of 2014 to break by month but wasn't updated for 2015. The main issue is that the last partition was setup as Jan 2015 so Feb ...
1
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1answer
29 views

SQL server compress backup for lower version databases

Recently our development team migrated couple of sql server 2000 Databases onto SQL2K8R2. Now we creating the backup strategy, and just had a doubt, that: 1) Compatibility level of those DB's still ...
2
votes
2answers
139 views

SELECT WHERE CASE

I have the following table (MySQL): -------------------------------------------------------- | id |product_id| store_id | stock_id | priority | ...
0
votes
4answers
29 views

ISNULL() OR Is NULL in UPDATE statement

I have to run UPDATE statement on live online database about 5 lac records so i want to know which statement are run faster Update Table set REC_ID = isnull(REC_ID,'') Update Table set REC_ID = '' ...
1
vote
2answers
53 views

DB backups for production to DR without creating jobs in prod

I had two servers(SQL 2005) A and B. B is Production server and A is DR. I want to take backups for B server databases from A server. We can not create any maintenance plans or jobs in B production ...
0
votes
0answers
31 views

count rows with same value and get column from other table

I'm trying to count product numbers for a period of time there are three tables. invoice (table) Column Column ------------------------------------------- |invoicenumber ...
0
votes
1answer
22 views

How to use a group by in inner join

I have Two tables Table 1 ID totalamount 100 1000 101 500 Table 2 ID Individualamount 100 500 100 300 100 100 101 ...
0
votes
1answer
21 views

HAVING ANY in Postgres

I'm looking for the right syntax to filter groups (i.e. groups of rows that have been GROUP BY'd) where at least one row fits a certain condition. For example if I wanted to select a group where at ...
1
vote
1answer
29 views

invalid memory alloc request size on simple query with array_agg on Postgres 9.3

Postgresql 9.3 - Debian 7 54gb RAM 8 cores (On google compute engine) I have a huge table called search_token (~50M rows) and I'm trying to execute a very simple query that is: select ...
0
votes
1answer
25 views

Insert where not already available for FK?

I'm looking for a simpler way to do this as I'm clearly thinking like a developer instead of a DBA. How would a DBA tackle this? I have a table with 3 column: PK, Name, FK. PK Name FK 1 ...
1
vote
0answers
14 views

Removing Orphan Pull merge replication subscriptions

I have a merge replication set where I have removed one of the pulled subscriptions. On the subscriber the subscription shows up after deletion. It will not go away. I tried the methods provided on ...
0
votes
1answer
151 views

Conversion failed when converting the nvarchar value '0.000000' to data type int

I have a code select CONVERT(NUMERIC, CASE ISNULL(FLEXFIELD4,'') WHEN '' THEN 0 ELSE FLEXFIELD4 END ) FROM DEIT_INDENT_DTL_INBOUND_RXL WHERE IND_INDENT_NO='NEE15SR000003' which is ...
1
vote
2answers
56 views

Count values from one table using two columns in another table

I have a problem. I have table_1 (col1, col2, value) and table_2 (col1, col2). I want to count values from table_1 but only the rows which exist in table_2. In both tables col1 and col2 are key (not ...
-1
votes
1answer
68 views

use variable as column name in where clause in sql

I want to use a variable as column name in my SQL query. Problem: I can not use dynamic SQL as the SQL query that I have is inside of a user defined inline table function. What are other possible ...
0
votes
0answers
40 views

Query gives not result

I have a quite simple table with different values. When I search a specific column no results are given. What could be the error? For example I search for an "id": db=# select * from table where id ...
1
vote
1answer
30 views

How to include a where clause in a query from another column

I have two tables: pointer_table(col_name varchar, col_val varchar, wh_clause varchar) value_table(col_1 varchar, col_2 varchar, value varchar) col_name in pointer_table denotes the column in ...
2
votes
1answer
33 views

SQL Maintenance Rebuild Fails

I am pretty new to SQL and I have this maintenance job that keeps failing and I am not sure how to troubleshoot this. I have troubleshot other job failures with google help to success but this one is ...