An acronym for "Structured Query Language" (it's not the name of a specific DBMS product), SQL can be used in relational database management systems (RDBMS) to query, update, delete, and insert data as well as modify the structure of the database. It can also be used to manage schemas and data ...

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1answer
39 views

SQL query to update columns in the same row [closed]

I have a table named student with user id and name fields: user id is numeric, like: 1,2,3. name is a string like: a,b,c I need an update query which change all name = user id In other words, the ...
0
votes
1answer
68 views

Query for row combine

BEGIN declare @t1 table( date1 date, EmpID int, bnumber varchar(24), Name varchar(50), Depname varchar(50), mintime time, maxtime time, Status1 varchar(50)) insert into @t1 exec dbo.InOut2 ...
1
vote
1answer
8 views

Not able to update MySQL table using Oracle: Unknown column in 'where clause' {42S22,NativeErr = 1054}

I have the following tables: MySQL table: jti_member_interact CREATE TABLE `jti_member_interact` ( `INT_MEMBER_ID` int(11) NOT NULL, `INT_ID` int(11) NOT NULL AUTO_INCREMENT, `INT_SOURCE` ...
1
vote
1answer
35 views

Insert fail logs

Is there a way to view fail inserts to a SQL Server database? I am seeing that a number of my inserts are failing and I'd like to recover that data if it's possible.
0
votes
1answer
25 views

Does column size increase break SELECT *?

I searched a little bit on this topic before realizing it is somewhat tricky (for me, at least) to come up with an effective search phrase for it because it overlaps with other common topics. So here ...
2
votes
4answers
50 views

How to retrieve closest value based on look-up table?

I'm attempting to create a query that will find the closest value from one table and return its ID into the resulting table. Below is an example that should describe the situation better. Sample ...
1
vote
1answer
26 views

Fetch data from same table using two group by clauses in mysql

I have one table name as consultant with 4 fields(id, name,user_type, Created date). I need to write an mysql query for return the count of user_type in each month. In my table, user_type is ...
-1
votes
0answers
7 views

Is It possible to create Multiple schemas in Single Tablespace On PostgreSQL database and Viceversa

Can i Create Multiple schemas in Single tablespaces and multiple tablespaces in single.Please give me some brief Explanation?
0
votes
0answers
6 views

SSDT Referenced dacpac om Same Database with same File groups

I am referencing a dacpac in my sql Database project that has filegroup included e.g [IDX] and [LOOKUP]. In my Sql project I want to use the same filegrps. so in my model i jave a sql script like ...
0
votes
1answer
30 views

Relationship between two tables so their value changes together

First of all I'm not sure if this website is for purely experts but sorry if it is.. the main page was a little vague I was wondering if it'd be possible to have a relationship, for example, in my ...
0
votes
1answer
40 views

Script not emailing from Maintenance Plan/SSIS

I have created the following script to send emails from my plan but it isn't sending out. It works correctly in a query window and under an agent job. This is added to the plan as a 'Execute T-SQL ...
1
vote
1answer
33 views

MySQL: Find ID with only 2 attached IDs in subtable

I've got 2 tables. 1 containing my Threads and 1 containing the users attached to these threads. I want to find the ThreadID with 2 specific UserIDs attached, no more no less. This is what I've come ...
0
votes
0answers
38 views

Show single value of one column for multiple rows of other columns

I have a SQL query which displays my data results like this. date emp_id emp_name spent_hours 19-08-2013 1024 jack 10 19-08-2013 1024 jack 11 19-08-2013 1024 jack ...
1
vote
5answers
178 views

What is the advantage of partition Date field into individual Year(int), Month(int), Day(int), Time(time) columns? [closed]

What is the advantage of partition Date field into individual Year(int), Month(int), Day(int), Time(time) columns? My manager said this is well known practice and query performance is good. Is this ...
2
votes
2answers
406 views

Is there any way to do a SELECT query without any optimization in SQL Server?

I am trying to test the speed of SQL server queries. However, once I do the query once, it becomes a lot faster. The database is live so I can not make any changes to it, only to the SELECT query ...
1
vote
0answers
13 views

How to cope with SQL Server 2012 vs SQL (Azure) Database sql files

I'm trying to port my system to SQL Database (Azure instance) from SQL Server 2012. I'm using Visual Studio 2013 and I have my .sqlproj with all the definition of my database inside. Given that a ...
0
votes
1answer
88 views

MySQL 5.1 -> 5.6 problem, select distinct order by limit query stops using index

I'm testing a MySQL 5.1 -> 5.6 upgrade, and I've run into an issue. I have a query that hits a ~30 million row table, selecting distinct IDs with an order by/limit restriction. Sample query is ...
0
votes
0answers
32 views

I am trying to implement Scott Chamberlain's code in SQL Server 2008 R2 . Getting Assembly not present errors

I am trying to use Scott Chamberlain's code, here: http://dba.stackexchange.com/a/17466/45380 I was able to compile it and create the DLL, but now when I try to run SQL CREATE ASSEMBLY I get: Msg ...
0
votes
1answer
38 views

Need to delete consecutive, unchanged records

I have a rather large MySQL db that is tracking pricing changes for a large number of products. Each entry has a SKU a datetime and a price. Sometimes, there is no change in the price from one time ...
0
votes
1answer
33 views

CASE conditions in SELECT statement

I have the following SELECT statement: SELECT expt_id, iso_stain, test_stain, stain_type CASE WHEN stain_type = 'Blue' THEN iso_stain = 'NA' CASE WHEN statin_type = 'Hematoxylin' THEN ...
0
votes
2answers
28 views

Query with a sequence of “and not like”

I have a table called VHS_Metadata_Aug52014 with columns: Title, Description,Tag, Speaker, VIP, FilmingLocation, Notes I'm trying to write a query that returns all records for which the word ...
3
votes
2answers
194 views

Can I update every datetime in bulk?

The current database assumes all times are local to the user. Now we're changing this so the database stores everything in UTC and our application converts the UTC time in the database to the correct ...
0
votes
1answer
26 views

Sub query with not equal

Sub query with not equal table_1 col1 SV0362 RU0177CSPG NO0124CSPG VN3582 AT9923CSPG BZ0324 PE0309 AS4293EXPT ML0331OMKT table 2 colA OO56128665 OO56128665 OO56128665 OO56128665 US0170 US0170 ...
0
votes
1answer
34 views

JOIN on Microsoft Access derived table not working

Can you please help me why my below SQL is not working in Access 2010? SELECT Table2.Product, Table2.Color, SEQMAX, Table1.Attribute FROM ( Table2 LEFT JOIN ( SELECT ...
0
votes
2answers
42 views

SQL insert into … values (…, select(…))

I am trying to insert 25 users, user1...25 into Members with the same GR_ID = 2 with command: insert into MEMBERS (GR_id, username) values (2, (select username from USERS where username like ...
0
votes
0answers
11 views

Access Sql Server Linked Server during Logon Trigger

I am trying to log users logons to my Sql Server (A) in another Sql Server (B, different location physically), but when I try to log in I get the error Login failed ... due to trigger execution and ...
1
vote
0answers
63 views

sql query takes too long to execute [closed]

I am having trouble with this query. It takes 10 hours to execute. WITH CONSUM AS ( SELECT C.ID_MEASURER,C.ID_MEASURING_POINT,C.CONSUM_TYPE FROM GCGT_RE_CONSUM_H_E C WHERE C.DAY ...
1
vote
0answers
27 views

One table for article comments, video comments and photo comments or multiple tables?

First DBA question. Greetings people. I hope I'm not duplicating a question but it's very hard finding database design related questions here (for multiple comment tables), as all 'design' questions ...
0
votes
1answer
40 views

How to deal with very large transaction logs in SQL Server

Here is my situation: I have being asked to deal with a SQL Server 2008 R2 database that has a transaction log that is several times bigger than the database itself. The database is in full recovery ...
0
votes
1answer
52 views

User defined data types causing implicit conversions

user defined datatypes, i'm looking at some execution plans and seeing implicit conversions happening in the background when a var is declared of type user defined data type and pulling a value into ...
3
votes
4answers
195 views

Best practice for a Table with private columns

I have a table with user data, where most of the columns can be public or private (so it will be shown or not on the app) and every user can decide which fields to hide. So far I had a couple of ...
0
votes
1answer
38 views

Compare dates in Oracle SQL [closed]

I have a table LoanDeadline that has a column called deadline, it's simple text and not Date and it's in the format of July 25, 2014 How do I compare this with sysdate ? So far I have SELECT ...
0
votes
2answers
26 views

assign selected columns to a variable

Select sum(column_a) as a, sum(column_b) as b round(a / b) From table Group by column In the example above I am summing two column, and I would like to use those 2 results in calculating ...
0
votes
1answer
40 views

How do I count the number of different child id's belonging to a parent record?

For instance I have two tables in a music database. Table album and table track. Each track record has (amongst other things), an album_id and an artist_id Each album record has a unique album_id ...
1
vote
1answer
36 views

Does PostgreSQL allow multiple grantees in GRANT commands?

Looking at the PostgreSQL docs it seems that the GRANT command only grants to a single user or role. In fact it doesn't seem to be PostgreSQL alone. Isn't possible to do something like GRANT SELECT ...
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votes
3answers
71 views

SQL cache hit ratio [closed]

I have install SQL server, but when i check report of DB there is cache hit ratio which is 98.92%. Is it harmful for sql, if yes then how to reduce it.....? please give me solution for that. thanks, ...
0
votes
3answers
52 views

Suppress display in a column if the value is equal to the value in another column

I have 2 date columns that display side-by-side. I have some dates that are equal. I do not want to display the "equal" dates/duplicate date values in one of the columns. How do I do that? Example ...
0
votes
1answer
28 views

Script to Add a Job to a SQL Server DB

I want to add a job to my DB to make a back up weekly but i want to do it from an script, i've serched and with what i found i made this: CREATE SCHEMA job go CREATE PROC BACKUPS @dir varchar(max) AS ...
1
vote
1answer
35 views

Combine 2 tables

I am wanting to combine 2 tables. until recently the column names were different , and one had fewer columns than the other, however it was deemed unnecessary to have them as two tables. I have ...
0
votes
1answer
33 views

SQL where clause effect on table? [closed]

I have sql query as select sourceIP, sum(sourceBytes) from flows group by sourceIP order by sum(sourceBytes) desc This brings result (dummy) as:- sourceIp SourceBytes 192.168.1.2 100 ...
3
votes
1answer
12 views

Postgresql query plan differs with limit value making the query slower for lower limits

I have this query: SELECT "table_1".* FROM "table_1" WHERE "table_1"."deleted_at" IS NULL AND "table_1"."table_2_id" = 15797104 ORDER BY "table_1"."id" ASC LIMIT 1 The explain for the query ...
0
votes
1answer
32 views

MySQL Insert with Select

Trying to insert data to a table with values from different tables. INSERT INTO class_teachers_section(class_ref, teachers_ref, section_ref) select (select class.id as class_ref from class ...
2
votes
2answers
57 views

Should I drop a foreign key if I use a soft delete?

"ON UPDATE" scenario never happens in my application. As soft delete is used, "ON DELETE" cascade and restrict scenario never happen as well now. Then, should I just drop foreign key because I have ...
0
votes
0answers
27 views

Implicit conversion from data type varchar to varbinary is not allowed. Use the CONVERT function to run this query

While I am executing a query, I am getting the below error: Implicit conversion from data type varchar to varbinary is not allowed. Use the CONVERT function to run this query My query is: ...
0
votes
1answer
44 views

Is it possible to create a function in SQL server to act as clause e.g. Where or Limit

I've found a simple way to mimic the limit clause is SQL server by using SELECT * FROM customers OFFSET 22 ROWS FETCH NEXT 5 ROWS ONLY I'd like to replace those two line with LIMIT(22, 5) e.g. ...
1
vote
1answer
53 views

add a column to an existing table

I'm wanting the best way to add a column to an existing table in my database. I'm using SQL Server 2012. I don't want the data that is in the table to be affected, I just want to add a new column ...
0
votes
1answer
36 views

change column name

I'm needing to update a few column names in some tables I have in my database. I'm using SQL Server 2012. I'm aware of using the RENAME ability: ALTER TABLE table_name RENAME COLUMN old_name to ...
-1
votes
0answers
11 views

Error stored procedure Mysql

I have a table and every month need to delete data for new data are included. I made a stored procedure to automate this process. This table has about 3 million lines in a monthly period. This can ...
1
vote
1answer
68 views

Selecting data from multiple rows and insert it into a column

My table is like this: temp1 name city phone_no pincode ----------------------------------- amit Delhi 12345 123 Rajiv Bombay 836536 432 How do I transform the last ...
0
votes
2answers
48 views

Set default value for all columns with specific name within a database

I've got a database that includes an int column project_id on many tables, and I want to script setting the default value to a specific value for all columns with that name in the database. Note that ...