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

learn more… | top users | synonyms (2)

0
votes
1answer
45 views

Will canceling InnoDB compression that's already in progress corrupt data?

I have a 155GB table that is in the process of being compressed. ALTER TABLE $table_name ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=8; This compression has been running for a long time and is impeding my ...
0
votes
1answer
165 views

How to get average according to last update time?

There is table - Item below, how can I get the average Value according to its 15 minute value from last record time? I am using SQL Server 2008. Table -- Item Table 15min_AVG
2
votes
1answer
136 views

Help Changing Collate of ALL databases

I have approximately 80 Databases with various collations. I would like to modify the collation of all 80 databases. I have the following code: USE [COLLATE_ADM] GO SET ANSI_NULLS ON GO SET ...
0
votes
0answers
28 views

Question? Creating a website that has 2 sets of intermidate tables

I am creating a web site that uses 6 tables from one database in mysql (example) 2 sets of tables that connect to intermediate tables (using foreign keys to join the tables). 1) Category -> ...
0
votes
2answers
106 views

MS Access Query to update

Trying to update Packet.MSGState to P where if not R or D and it is Y in table Packet.MSGState UPDATE Packet SET Packet.MSGState = 'P' Where (MSGState <> 'R' and MSGState <> 'D') and ...
1
vote
1answer
913 views

Insert rows in a table, via a row-level trigger, activated after insertion in that same table

I have to design a schema and trigger system in SQL that will save words and their synonyms. I thought of this basic schema: create table words ( id int primary key auto_increment, word ...
1
vote
1answer
95 views

Trigger that records values for 5 columns from 3 tables when a value for column Z in table 3 is of a certain value

I am new to triggers and SQL in general. Sorry in advance if this forum is only for experts and this is a newbie question... I need to create a trigger that fires when someone tries to submit a grade(...
1
vote
1answer
341 views

Sql Server 2012 Change Data Capture weird behaviour

In my Sql Server 2012 I have the following table in a database CREATE TABLE [dbo].[HumanResource]( [ID] [int] IDENTITY(1,1) NOT NULL, [Name] [nvarchar](50) NOT NULL, [IsHired] [bit] NULL,...
1
vote
2answers
66 views

Get the pais_id not associated to fabricante_distribuidor_id and producto_solicitud_id, the opposite from SELECT query

I have this query for get all the pais_id given a fabricante_distribuidor_id and producto_solicitud_id, the query works fine. SELECT DISTINCT nom.pais_id FROM negocio.fabricante_producto_solicitud ...
0
votes
1answer
21 views

Selecting one variant out of different similar results

I have a table that looks as follows: Book Format Contents A html ... A markdown ... B html ... C markdown ... I want to return only 1 version of a book. ...
1
vote
1answer
256 views

What do these parameters mean at the beginning of my SQL Server query plan?

I'm looking at query plan in SQL Server Mgmt Studio and I see something like this: (@P0 nvarchar(4000), @P1 nvarchar(4000)) Update... What does the type mean beside the parameters? For this example ...
0
votes
2answers
2k views

Adding Last 12 Months to a row in a table (SQL Server)

I want to add the last 12 months to a SQL Server table, something like the following: FixedText Jan-14 Feb-14 Mar-14 Apr-14 May-14 Jun-14 Jul-14 Aug-14 Sep-14 Oct-14 Nov-14 Dec-14 Jan-15 Please can ...
1
vote
2answers
1k views

Understanding multiple table join with aggregation

I have a basic question on how JOIN works on multiple tables. I want to count occurrences of Foreign Key in link1 & link2 CREATE TABLE main ( id SERIAL PRIMARY KEY, name text NOT NULL ); ...
2
votes
1answer
69 views

Having problems with concurrency while trying to lock a record in custom messaging system (Queue)

We are building our own custom messaging system and are having concurrency issues. Here are the rules: A process (EXE) console application locks 3 records and returns them No other process running (...
0
votes
2answers
1k views

How can i automate the process of log shipping monitoring

I have log shipping configured between my Prod SQL server 2005 and QA SQL server 2005. Per the requirement from Business we need to provide them with a report at the end of the day for the LOG ...
8
votes
2answers
250 views

Are “out of the row” fields read when a clustered index is used?

I know that when VARCHAR(MAX)/NVARCHAR(MAX) columns are used the data is stored out of the row - the data row will have a pointer to another location where the 'large value' is stored. I have the ...
1
vote
1answer
46 views

Having troubles creating table SQL [closed]

I'm new to SQL and Im trying to create a simple database, but I'm having problems with second one, I'm using Oracle Database express 11 and when I try to run this code I get error: Missing right ...
7
votes
1answer
5k views

Why not rebuild indexes with page count <1000?

I use Ola Hallengrens script for Index maintenance. Before I did that, I used the following query to see which indexes are fragmented most: SELECT dbschemas.[name] as 'Schema', dbtables.[name] as '...
0
votes
2answers
43 views

sync 2 tables in a single database in mysql with no duplicacy [closed]

I have 2 tables in a single database of MySQL. The structures are like this: mysql> desc main_tbl; +-----------------+--------------+------+-----+-------------------+----------------+ | Field ...
2
votes
1answer
4k views

How to pass a parameter into a function

At the moment I have a view created, see it here in the answer. How can I create a function based on that crosstab() query , so I can pass a date, and get data for the specific date? Also is it good ...
4
votes
1answer
691 views

Pull data from multiple tables in a view or function

There are 3 tables from which I need to pull data, and print it in a specific way. http://sqlfiddle.com/#!15/59481/8 Refer to this question to see how the query was produced. The version in the ...
2
votes
2answers
300 views

What is meant by churn?

I came across the following sentence in this blog post: Know your data - this helps you make the right decisions in terms of data types/nullability and churn helps with long term maintenance ...
0
votes
1answer
84 views

Update table from different table [closed]

UPDATE RBI.RBI_OV_F_DETAIL A SET (BRANCH_ID, BRANCH_NUMBER) = ( SELECT PRICE_BRANCH_ID, PRICE_BRANCH FROM RSE.RSE_SO_F_ORDERS B WHERE A.SOURCE_ID = B....
0
votes
1answer
207 views

decrement all columns entry when row is deleted

I have a column in a table containing the row_number, some kind of id number to identify the row. When I delete one row, I need the other rows to have their row_number decremented, to keep them sorted....
0
votes
2answers
892 views

Check if database has changed to determine need to perform backup

I want to check SQL server database is modified or not. Reason to check database is modified is for backup(sql database backup) purpose. So I will be doing a full backup first and if any data inserted,...
2
votes
2answers
486 views

Will a non-clustered index on a column with covering index on all the columns of table affect the Delete statement Records)?

I am trying to delete thousands of records say 35K from a table which consists like 10 million records. Delete * from Table where ScenarioID=859 I have also tried bulk deletion DECLARE @...
1
vote
2answers
682 views

How to calculate a total by comparing current and next row

I have a table with some rows: I have a few questions to accomplish the task altogether. Is it possible to calculate total of transmitted and received based on checked_date and ip and connect_time ...
1
vote
3answers
1k views

How to see percentage of existing values for all columns in mysql table?

I have three large-ish tables (~20 columns each) and I want to know what percentage of rows have a value for each column. For instance, this table: ID | TITLE | SERVING | NOTE ---...
3
votes
2answers
2k views

Getting the number of Saturdays and Sundays in a month

I am trying to get the number of Saturdays and Sundays for a given month represented by an end_date and a start date. I have been trying to understand the algorithm in the SO question here . I have ...
0
votes
1answer
37 views

Update different oracle database from different oracle database

I want to update a CLOB column in B Oracle 11g database using a CLOB column in A Oracle 11g database located in a different server. What are the different ways to do that? and which is the best and ...
1
vote
2answers
111 views

How to tune the below query

I am currently working on below table structure to pull the data/ generate any one time report. Let us consider the table name to be ABC. ID Field Value 1 Name Nagarjuna 1 Gender Male 1 ...
0
votes
1answer
4k views

The SQL server Log folder is expanding because of the SQL Dump files (what to do with it ?)

The "Log" folder SIZE in the SQL server root directory (X:\Program Files\Microsoft SQL Server\MSSQL11.MSSQLSERVER\MSSQL\Log) becomes too big , ~80 GB. When I checked it, I see that there are a lot of ...
-3
votes
0answers
43 views

The SQL server Log folder is expanding because of the SQL Dump files (what to do with it ?) [duplicate]

The "Log" folder SIZE in the SQL server root directory (X:\Program Files\Microsoft SQL Server\MSSQL11.MSSQLSERVER\MSSQL\Log) becomes too big , ~80 GB. When I checked it, I see that there are a lot of ...
1
vote
2answers
358 views

Shrink logs in between user transaction in SQL Server

I have a database where there are like billions of rows and I need to delete the data based on some condition. Initially I was trying to delete the code in one transaction and log starts growing to ...
1
vote
3answers
6k views

SQL Query in suspended state causing high CPU usage

Environment detail: SQL Server 2008 R2. I have applications running on JBoss that access the DB using JDBC driver. Issue: My online DB server was experiencing high CPU usage. Using the following ...
2
votes
1answer
388 views

MySQL WHERE if NULL select another column

This is my mysql table id date_created date_active 1 2014-06-07 18:24:38 NULL 2 2014-06-07 18:24:38 2014-06-07 18:24:38 3 2014-06-07 18:24:38 2014-06-...
1
vote
1answer
90 views

SP how can I sum the amount of all leftchild in parentid

I have this data and table structure,I am creating MySQL stored procedure to sum all the amount in the leftchild of the parentid, I don't have enough knowledge in stored procedure.and I need some help ...
2
votes
0answers
159 views

Storing URLs in a database

I am thinking about storing URL's in my database, but I am not sure whether the way I use is an efficient way to do things or not. Table name : url url_id (Primary Key & Auto Increment) url_value ...
2
votes
1answer
226 views

Identify unattached File Size in SQL Server

From a similar post on this forum, I have modified the below code as per comments and able to get the orphaned files in the drives. The code is : EXEC sp_configure 'show advanced options', 1; ...
1
vote
1answer
41 views

SQL Server 2008 R2 - Change distributor schedule

We have configured SQL 2008 R2 replication. Distributor is configured in continuous mode, publisher is scheduler is set to execute after every six hours. Now we want to change distributor schedule ...
2
votes
2answers
24k views

How to empty a column in mysql [closed]

I have table Like This ID | name | prize | ____________________ 1 | Mike |Handphone 2 | Josh | 3 | Sony | PC 4 | Jack | let's say my table have 1000 rows. If I want To Empty only the Prize ...
3
votes
2answers
85 views

Selecting minimum value in top grouping only

I have a query built in Oracle 10 which produces a set of data like this: EMP_ID WORK_DT TIME_TYPE ---------- --------- --------- 12345 19-DEC-14 10 12345 18-DEC-14 10 ...
0
votes
0answers
39 views

My database engine cannot see one of the drives

I installed SQL Server 2012 on a VM that has two harddrives, C and E. I can log into the Database Engine, but when I attempt to attach a database that is on E, Drive E is not available. Only Drive C ...
5
votes
2answers
320 views

T-SQL brain teaser: find non-overlapping sets

I would like to ask for help coming up with a query, which can identify groups on non-overlapping records. Here is a sample scenario (admittedly contrived). Let's say I have employees who are ...
1
vote
1answer
333 views

How to insert values into a junction table?

I add values into my two tables using the code below, but I also have a junction table called book_main_cover and I want to add data into this table to make a connection between book_id and ...
0
votes
1answer
677 views

Run CDC Cleanup job at specified time

I have enabled cdc and using it , it works fine now the problem is that we have many tables in a database and also we have many databases so how to configure cdc cleanup job to run again and again ...
0
votes
2answers
48 views

Get all the users that are managed by a targeted manager

I have the following model: Table user: (id, name, direct_manager_id) Table customer: (id, name, managed_by_id) i.e. users can have another user as their direct manager, Customers can be managed ...
0
votes
1answer
94 views

Why Does the Update Statement also updates indexes?

I am currently learning about SQL queries and how indexes work with them, and I ran into a situation that I don't understand. Let's say I have this query for that updates a tables' values with another ...
-1
votes
1answer
38 views

How to manage two tables in SQL Server [closed]

i have two tables offer1 and offer2 The two tables are Offer1 Offer2ID|OfferName|OfferExpiryDate Offer2 Offer2ID|OfferName|OfferExpiryDate now i have third table which keeps record ...
1
vote
1answer
126 views

Deleting duplicate rows with condition [duplicate]

I have posted a similar question before, but this one is a little modified. I have a table with 4 columns as shown below. ITEMCHARGE CPT4 EFF_DATE CPT4MOD 326.8 29075 ...