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SQL QUESTIONS

Non-Equi Self Join
Non-Equi Self Join
This might help you A "self-join" is just like a normal join execpet that the same table appears on both sides of the join clause. "non-equi" means finding rows which don't match on some column. So in your case you need to join on CITY and filter on
TAG : sql
Date : November 23 2020, 11:01 PM , By : Olesia Shpak
Combine two tables for one output with separation on different columns
Combine two tables for one output with separation on different columns
like below fixes the issue Because you have a fixed number of columns, you should be able to get away with a standard pivot query:
TAG : sql
Date : November 23 2020, 11:01 PM , By : Sukhneet Sandhu
Select the used and not used Rows from Foreign key constraints
Select the used and not used Rows from Foreign key constraints
wish help you to fix your issue You should use the parts table as the core of the query and make outer joins with the corresponding components and products tables
TAG : sql
Date : November 23 2020, 11:01 PM , By : DheerajVoleti
SQL stored procedure, Column calculated from two other calculated columns
SQL stored procedure, Column calculated from two other calculated columns
wish helps you You can't reuse the aliases in the same level of the query. So, just repeat the CASE expressions:
TAG : sql
Date : November 23 2020, 11:01 PM , By : laneagle
Default to a value when a sub-query statement fails?
Default to a value when a sub-query statement fails?
To fix the issue you can do I have the following query: , Max will always return NULL if no rows found. So You can use ISNULL.
TAG : sql
Date : November 23 2020, 11:01 PM , By : Ankit Yadav
How do I do an SQL query based on a foreign key field?
How do I do an SQL query based on a foreign key field?
should help you out I have the following tables: , You can try below code
TAG : sql
Date : November 23 2020, 11:01 PM , By : Minotaur Blood
How can you have two COUNT queries GROUPED BY the same column in SQL?
How can you have two COUNT queries GROUPED BY the same column in SQL?
This might help you I have two table named, one named Employees, and one named Shop. The Employees table holds the gender of all employees, while the Shop table has the name of the store that each employee works at. , You can do this
TAG : sql
Date : November 23 2020, 11:01 PM , By : jYan
How to select only the second max date from a table
How to select only the second max date from a table
I hope this helps . I have a table where the delivery date and order number are stored.
TAG : sql
Date : November 23 2020, 11:01 PM , By : Satyam Tayal
how to get previous 11 month names from sysdate using oracle
how to get previous 11 month names from sysdate using oracle
I think the issue was by ths following , how to get previous 11 month names from sysdate using oracle , May be you need something like that:
TAG : sql
Date : November 23 2020, 11:01 PM , By : Azeem V L
figuring out how many block accesses are needed
figuring out how many block accesses are needed
will help you The number of blocks accessed, is essentially the number of logical/consistent gets your query does. You can use the option set autotrace traceonly statistics SQL*Plus to see this statistics value:
TAG : sql
Date : November 22 2020, 11:00 PM , By : lpeng
Calculate difference of dates belonging to same group in sql
Calculate difference of dates belonging to same group in sql
I hope this helps . I have following set of data: , In most databases, you can do something like this:
TAG : sql
Date : November 22 2020, 11:00 PM , By : GHANSHYAM PRASAD
ERROR Message: ORA-00923: FROM keyword not found where expected
ERROR Message: ORA-00923: FROM keyword not found where expected
wish helps you I don't think that Oracle has a TOP keyword. Instead, try using ROWNUM:
TAG : sql
Date : November 22 2020, 11:00 PM , By : user6064628
Oracle SQL statement to update column values based on specific condition
Oracle SQL statement to update column values based on specific condition
this one helps. I have a table which is having 3 columns-PID,LOCID,ISMGR. Now in existing scenario, for some person, based on the location ID, he is set as ISMGR=true. But as per the new requirement, we have to make all the ISMGR=true for any person
TAG : sql
Date : November 22 2020, 11:00 PM , By : Alexander Ling
SQL Server throwing errors when trying to reference newly created column in already existing table
SQL Server throwing errors when trying to reference newly created column in already existing table
Hope this helps When trying to reference/access newly added column to existing (or not?) table, I am always getting editor error and most of the time execution error (most != always, which is even weirder). , Just Put
TAG : sql
Date : November 21 2020, 11:01 PM , By : manoloesparta
SQL Concatenation Query - Four As in Concatenated Name
SQL Concatenation Query - Four As in Concatenated Name
it helps some times I am trying to create a view in SQL. We will call this view "A7T8". The view will pull first and last names from the database, and concatenate the first and last names into a field called FullName. However, I only want to select t
TAG : sql
Date : November 21 2020, 11:01 PM , By : Sebas Yii
When utilizing a microservices architecture, will the underlying read/write database become a bottleneck?
When utilizing a microservices architecture, will the underlying read/write database become a bottleneck?
wish help you to fix your issue ...if I were to implement a microservices architecture, would the centralized read/write database become a bottleneck?
TAG : sql
Date : November 21 2020, 11:01 PM , By : Aditya Samalla
SQLite GROUP BY on result of union not using indexes of constituent tables
SQLite GROUP BY on result of union not using indexes of constituent tables
this will help It might be possible that the database would be able to apply the grouping to each table – in theory. However, the problem is that the software must be able to prove that this transformation is always valid.With the current optimizer i
TAG : sql
Date : November 21 2020, 11:01 PM , By : Bhaskar Kudalkar
Prevent duplicates for a certain GraphCool model
Prevent duplicates for a certain GraphCool model
With these it helps The easiest way to do so is by enabling the "Unique" constraint for a certain field (studentNumber in your case for the Student model). You can enable constraints in the structure view when editing a model.Note: Under the hood, th
TAG : sql
Date : November 20 2020, 11:01 PM , By : Crazy
How to create custom, dynamic string sequence in SQL Server
How to create custom, dynamic string sequence in SQL Server
I wish did fix the issue. An IDENTITY column might have gaps. Just imagine an insert which is rollbacked out of any reason... You could use ROW_NUMBER() OVER(PARTITION BY CONVERT(VARCHAR(6),OrderDate,112) ORDER BY OrderDate) in order to start a sorte
TAG : sql
Date : November 20 2020, 11:01 PM , By : Gordon
Finding entry page, exit page and bounces -sql
Finding entry page, exit page and bounces -sql
Hope that helps The following is one way (demo).
TAG : sql
Date : November 18 2020, 11:01 PM , By : Bill B
Complex Self-Join
Complex Self-Join
To fix the issue you can do I have a problem with a view, I'm working with Sql Server. I have a table like this: , I think you want union all with lead():
TAG : sql
Date : November 18 2020, 11:01 PM , By : marcony meza
Connected Components
Connected Components
like below fixes the issue You need a recursive apporach, but your WITH RECURSIVE creates a humongous intermediate result, which leads to no more spool.For a similar process I used following approach (originally USING A WHILE-loop in a Stored Procedu
TAG : sql
Date : November 18 2020, 11:01 PM , By : Peter Xiang Gao
SQL Queries Processing order is not consistent
SQL Queries Processing order is not consistent
wish helps you Having two tables products and product_types, both have the following rows : , Does it choose the table to start with randomly or what ?
TAG : sql
Date : November 18 2020, 11:01 PM , By : Tanner3068
Find 3rd highest cost from table
Find 3rd highest cost from table
it should still fix some issue Oracle does not recognize TOP. You can do what you want but it requires additional subqueries (unless you are using Oracle 12c+):
TAG : sql
Date : November 18 2020, 11:01 PM , By : baris ildan
How to log queries written in eclipse BIRT
How to log queries written in eclipse BIRT
With these it helps I didn't test it but it can help you : See Jason answer
TAG : sql
Date : November 17 2020, 11:01 PM , By : Tom Bruinsma
Why does round(143.23,-1) return 140?
Why does round(143.23,-1) return 140?
help you fix your problem The second parameter indicates how many digits of precision after the decimal point you want to preserve. Thus, -1 means one digit before the decimal point. I.e., you're losing the "ones" digit and rounding to the nearest "t
TAG : sql
Date : November 17 2020, 11:01 PM , By : Jo App
Find highest value in column using ANY or ALL
Find highest value in column using ANY or ALL
I wish this helpful for you You are looking for the customer(s) whose balance is greater than or equal to all balances in the tableso you just need to use >= instead of >
TAG : sql
Date : November 17 2020, 11:01 PM , By : Omid Rashidy
Need SQL query for hierarchical data in a flat result set
Need SQL query for hierarchical data in a flat result set
wish of those help There's a table: PS_POSITION_TBL
TAG : sql
Date : November 17 2020, 11:01 PM , By : Seba Al-ali
How to design a table hierarchy for orders with different products parameters
How to design a table hierarchy for orders with different products parameters
will be helpful for those in need I've studied the 5 ways that were mentioned here , So in four tables
TAG : sql
Date : November 17 2020, 11:01 PM , By : Yumana Charafeddine
ms Access sql expand
ms Access sql expand
To fix this issue I'd be grateful for some help with the following problem I'm having. I have the following two tables (tblA and tblB): , I think this is just a join:
TAG : sql
Date : November 17 2020, 11:01 PM , By : user6063157
PostgreSQL: operator does not exist: timestamp without time zone == timestamp without time zone
PostgreSQL: operator does not exist: timestamp without time zone == timestamp without time zone
may help you . The comparison operator is = in SQL and PL/pgSQL. So you need to replace == with =
TAG : sql
Date : November 16 2020, 11:00 PM , By : krysydr
oracle execution plan, trying to understand
oracle execution plan, trying to understand
wish helps you , This is what happens, informally, in the right order:
TAG : sql
Date : November 16 2020, 11:00 PM , By : Faizan Rajpoot
SQL oracle add a value
SQL oracle add a value
Hope that helps If scholarship might be NULL replace it with nvl(scholarship,0) or coalesce(scholarship,0)
TAG : sql
Date : November 16 2020, 11:00 PM , By : Latesla Gillians
Access Crosstab Query: based on sales totals within TWO date ranges
Access Crosstab Query: based on sales totals within TWO date ranges
around this issue By: Dale Fye (Access MVP):I'm not sure you need a CrossTab for this.
TAG : sql
Date : November 16 2020, 11:00 PM , By : Toka Fadel
SQL - Select data from three tables where one table has multiple foreign keys to the same primary key
SQL - Select data from three tables where one table has multiple foreign keys to the same primary key
I hope this helps . After consulting StackOverflow and a few colleagues I changed the initial database schema into:
TAG : sql
Date : November 15 2020, 11:01 PM , By : mahmoud Farouk
Insert data from asp.net to ms access database
Insert data from asp.net to ms access database
will help you While I do not know ASP, your SQL has syntax errors as it is missing the closing parenthesis in INSERT INTO clause after listing columns and has an extra parenthesis after VALUES clause:
TAG : sql
Date : November 15 2020, 11:01 PM , By : زيزو كرستيانو
building a function based index oracle sql
building a function based index oracle sql
will be helpful for those in need As I understad you need to build index by sqrt(power(lat - latitude, 2) + power(lon - longitude, 2)) and root cause of problem is there is columns from different table. But in your example lat always "-28" and lon =
TAG : sql
Date : November 15 2020, 11:01 PM , By : skroll
sqlite IN check set coverage
sqlite IN check set coverage
I wish this help you The documentation says:
TAG : sql
Date : November 14 2020, 11:01 PM , By : Hermes
How subtraction of two select SQL statements works?
How subtraction of two select SQL statements works?
I think the issue was by ths following , The given query creates 2 tables on the fly:First on the fly table X:
TAG : sql
Date : November 13 2020, 11:01 PM , By : Sal S
How to call a function in another Function
How to call a function in another Function
around this issue I need to write a script that creates and calls a function named fnItemTotal that calculates the total amount of an item in the OrderItems table (discount price multiplied by quantity). , Try using the following code:
TAG : sql
Date : November 13 2020, 11:01 PM , By : Anik Vishwekar
Trigger check if some values are equal in some row in table then update if not then insert
Trigger check if some values are equal in some row in table then update if not then insert
it should still fix some issue After few days I have figured out that my knowledge of how triggers work was wrong.. so my mistake was that I was adding INSERT function but INSERT will be done anyway if there wasn't message with same sender, recipient
TAG : sql
Date : November 13 2020, 11:01 PM , By : Barnama Kdl
How to subtract dates of two column in sql
How to subtract dates of two column in sql
hop of those help? Assuming an order can't have more than one entry per order_no/status combination, you could join two subqueries:
TAG : sql
Date : November 12 2020, 11:01 PM , By : ker0x
How do you count number tasks in schedule per day in SQL Server?
How do you count number tasks in schedule per day in SQL Server?
Hope this helps You need a calendar table to do thisI have used Recursive CTE to generate the dates between the start and finish date range on the fly. But it is always better to have a Calendar table created in database. It will be very helpful in s
TAG : sql
Date : November 11 2020, 11:01 PM , By : Martin Livesey
Converting T-sql query into linq
Converting T-sql query into linq
like below fixes the issue The query I'm trying to translate is: , I fixed it:
TAG : sql
Date : November 11 2020, 11:01 PM , By : pnardi2
Query in which Start_date of two tables do not match in sql
Query in which Start_date of two tables do not match in sql
To fix the issue you can do If each table may have rows that are not in the other table, and you need to find both kinds, something like this should work. Assuming neither tables has duplicate rows (for example, that would be true if they each have p
TAG : sql
Date : November 11 2020, 11:01 PM , By : Bryce
Result don't print that table was created
Result don't print that table was created
will be helpful for those in need i reinstall the oracle to 11g and there is one problem. For exapmple when i create a table there is nothing in result, in 12c was message that "CREATED TABLE %tablename%", now there is nothing. In the blue corner wri
TAG : sql
Date : November 10 2020, 11:01 PM , By : Thales Areias
Average count data from pivot table - Need assistance
Average count data from pivot table - Need assistance
wish helps you I found the answer for my question by browsing through stackoverflow encountering on similar problem posted by one of the user.
TAG : sql
Date : November 10 2020, 11:01 PM , By : Adam
Import XML into SQL server using OPENXML command with XMLNS
Import XML into SQL server using OPENXML command with XMLNS
Hope this helps I would recommend to skip the OPENXML stuff altogether and use the built-in, native XQuery support in SQL Server:
TAG : sql
Date : November 09 2020, 11:01 PM , By : Teddy Tsoi
SQL - condtion in aggregate function while grouping
SQL - condtion in aggregate function while grouping
it should still fix some issue table1 , Use group by along with case:
TAG : sql
Date : November 09 2020, 11:01 PM , By : Used Biro
How to group by sum without using sum function in select?
How to group by sum without using sum function in select?
will help you There's a customer table having id, firstname, country and invoice total( for each customer). I need to write a query displaying list of countries (in descending order) according to revenue generated by each country. I'm trying the foll
TAG : sql
Date : November 09 2020, 11:01 PM , By : Onur Çinar
SQL statement to get the MIN() from the AVG() returned from second query
SQL statement to get the MIN() from the AVG() returned from second query
this one helps. I got a question regarding subquery in SQL statement. What I am trying to do is to find a minimum time with the average column result returned from another query. , If you want one row with the minimum average time, then you can do:
TAG : sql
Date : November 09 2020, 11:01 PM , By : Andrew
Export images from a SQL Server using Stored procedures
Export images from a SQL Server using Stored procedures
around this issue I'm using Microsoft Sql server 2012 as DBMS, there I have my database which is containing informations about football players. Each player has a photography, and I need to export players photos to my computer, I guess it is possible
TAG : sql
Date : November 09 2020, 11:01 PM , By : manish dafade
Error when importing data into sample DB2 database
Error when importing data into sample DB2 database
I wish this helpful for you I was able to fix my issue by typing "quit" in the db2 command line processor, navigating to the directory where the sql file was located, and typing the full command in question: "db2 -tvf create_hospitals.sql"I needed to
TAG : sql
Date : November 08 2020, 11:01 PM , By : Adnan S
Set default value in SQL Query
Set default value in SQL Query
With these it helps The formula should add 7 total days if SYSDATE is a business day, but it should add only 5 days if SYSDATE is a Sunday and only 6 days when SYSDATE is a Saturday. This can be done with a CASE expression:
TAG : sql
Date : November 08 2020, 11:01 PM , By : user6060883
Is it possible to have some kind of a group query that groups on the number in a column?
Is it possible to have some kind of a group query that groups on the number in a column?
wish help you to fix your issue You can use a group by clause to separate the result per distinct value of EnglishCount and then apply count(*) to each group:
TAG : sql
Date : November 08 2020, 11:01 PM , By : Adnan tariq
Sql query from multiple tables - joins not working
Sql query from multiple tables - joins not working
seems to work fine I have tried sub queries and join queries, but I cannot get the right answer, as I need to retrieve data from different tables. This is what I am trying to do:
TAG : sql
Date : November 07 2020, 11:01 PM , By : Vu Nguyen
Using regexp in Big Query to extract URLs
Using regexp in Big Query to extract URLs
this will help Try below - it is for BigQuery Standard SQL (see Enabling Standard SQL and Migrating from legacy SQL)
TAG : sql
Date : November 06 2020, 11:01 PM , By : Quinton Jefferson
Update the first row of table via sql
Update the first row of table via sql
hop of those help? Something like this is what you need. please apologize if there is a typo or something as I write it in notepad++.
TAG : sql
Date : November 06 2020, 11:01 PM , By : ubarpsi
SQL Filter - filtering with combination of multiple colums
SQL Filter - filtering with combination of multiple colums
this one helps. table1 , You can use the below query
TAG : sql
Date : November 06 2020, 11:01 PM , By : Yangtuo
Multiple-Row Subquery Operators
Multiple-Row Subquery Operators
I hope this helps . All of them can be used with multi row sub query. Confirmation from the oracle itself https://oracle-base.com/articles/misc/all-any-some-comparison-conditions-in-sqlany
TAG : sql
Date : November 06 2020, 11:01 PM , By : zakjut

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