logo
down
shadow

Simple query issue with multiple tables and mismatching IDs


Simple query issue with multiple tables and mismatching IDs

By : RemcoW
Date : November 20 2020, 01:01 AM
With these it helps First of all, I advice you to use some general type for event_participation records without type; But, unless to take that decision, supposing you want to get all matching records between all tables but also get results with no type, you can use the following query:
code :
SELECT DISTINCT e.E_CODE, s.S_CODE, p.P_ID, p.P_NAME, p.P_FIRSTNAME, p.P_STATUS, e.E_BOSS, tp.TP_TITLE
    FROM event_participation ep 
JOIN worker p ON (ep.P_ID = p.P_ID) 
JOIN event e ON (e.E_CODE = ep.E_CODE) 
JOIN section s ON (s.S_ID = e.S_ID) 
LEFT JOIN type_participation tp ON (ep.TP_ID = tp.TP_ID)


Share : facebook icon twitter icon
Simple sql query issue using 2 tables

Simple sql query issue using 2 tables


By : user2467664
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , as i learner, i would like to learn how will be a sql statement for this condition. , here's a start:
code :
SELECT PromotionID, S.*
FROM Statistics S
INNER JOIN Promotions P on S.LocationID = P.LocationID
WHERE S.ClickDate>P.CreateDate and S.LocationID = 111 and P.PromotionID = 988
mysql query issue with multiple tables

mysql query issue with multiple tables


By : Vsz'teaia ye
Date : March 29 2020, 07:55 AM
should help you out You need to indicate on the columns on the select line which table those columns are coming from.
On another note, i am assuming that the 2 warehouse tables have the same columns, but they just represent 2 different locations. This is generally not a good DB design practice. you could run into normalization problems which could cause data integrity problems and redundancy. you should have a products table with all their assorted info as well as a column that indicates which warehouse it is housed in and another table that lists the warehouses and all their info. make the warehouse column a foreign key references the warehouse table and you're golden. This can help with data integrity and with query design. But if my assumption is wrong, ignore this.
Query for fetching mismatching records from a table by cross checking with 2 other tables

Query for fetching mismatching records from a table by cross checking with 2 other tables


By : daveprescott88
Date : March 29 2020, 07:55 AM
Any of those help I have 3 tables (sya A, B and C) and they have 9 common columns (ID_number, company, Role, Seq_number, FirstName, MiddleName, LastName, Gender & DOB) between them. , I believe that should help you or at least give you an idea:
code :
;WITH BC as (SELECT * FROM B UNION ALL SELECT * FROM C)
SELECT * 
FROM BC LEFT JOIN A 
ON BC.ID_number = A.ID_number and BC.company = A.company and 
    BC.Role = A.Role and BC.Seq_number = A.Seq_number
WHERE A.ID_number Is Null or 
    HASHBYTES('SHA2_256', IsNull(BC.FirstName,'') + IsNull(BC.MiddleName,'') + IsNull(BC.LastName,'') + IsNull(BC.Gender,'') + IsNull(CAST(BC.DOB as VARCHAR),'')) !=
    HASHBYTES('SHA2_256', IsNull(A.FirstName,'') + IsNull(A.MiddleName,'') + IsNull(A.LastName,'') + IsNull(A.Gender,'') + IsNull(CAST(A.DOB as VARCHAR),''))
SQL Server - How join multiple tables in different databases with NO duplicates (simple query)

SQL Server - How join multiple tables in different databases with NO duplicates (simple query)


By : Agostino Ago
Date : March 29 2020, 07:55 AM
it should still fix some issue
I have one table that has 560782 rows of data [this should be the result when I'm done]. When I join it to another table (different database) to get the provname, I get 582634 rows. I know that is because there are sometimes two entries for the same provid. I ONLY need the single instance for the provid.
code :
SELECT a.pcp_id, a.HMO_ID, a.MEM_MONTH, a.MEM_YEAR, a.patient_id, .....
FROM IDA.dbo.ida_Mem_Mo a
inner join
(
select distinct prov_id, prov_name, org_name, serv_area_name from 
AMG.dbo.tbl_AMG_PROV b  ON a.pcp_id=b.prov_id
) b ON a.pcp_id=b.prov_id
MySQL performance issue on a simple two tables joined Query

MySQL performance issue on a simple two tables joined Query


By : R. Galang
Date : March 29 2020, 07:55 AM
To fix this issue Reply to "why"
Data_timeslots has a clusteted index that suits the ascending order
Related Posts Related Posts :
  • Why is IN() considered O(logN) operation?
  • Can a deadlock occur on commit?
  • Is there a fast way to do a '%phrase%' search in any DB?
  • Is using an IN over a huge data set a good idea?
  • How can I know if a table is already arranged in ascending order in MySQL?
  • MySQL - Designing database for a simple game
  • Why am I getting "Host '192.168.1.220' is not allowed to connect to this MySQL server"?
  • what type of password hash? possible mysql hash?
  • MySQL - Using a date range vs functions
  • Using IS NULL and COALESCE in OrderBy Doctrine Querybuilder
  • How to merge MySQL columns into one column if there are empty values in the table?
  • Cardinality Confusion
  • Renaming column multiple ids in SELECT
  • Group all from and to messages per user
  • How to handled the null values in WHERE IN condition in mysql
  • Is it okay to update primary key field to shift a record to the top?
  • Stop query through pdo
  • How to check whether particular value in field in MySQL exists
  • Execute a statement for every table in a database
  • insertion 74G data into mysql table cost more then 2 days, how to improve insert performance
  • Where can I see the differents "Hibernate Console Configurations" in Eclipse
  • MySql | relational database vs non relational database in terms of Performance
  • Exporting mysql database using mysqldump including procedures
  • Trigger MySQL not working
  • How do I update values for individual rows quickly?
  • MySQL join query with multiple where condition
  • MySQL stored procedure is not working
  • MySQL - Order By exact match at the end
  • Select max date or null date from same table MySQL
  • Best solution workaround for needing a mysql event on insert?
  • MySQL select several columns of several tables at the same time without using JOIN
  • Is it more efficient to have a table with one of its columns mostly empty or make a new table and refer to it?
  • mysql data truncated with ñ character
  • MySQL Distinct Active Users for the last month query
  • Get all rows that match another attribute in the same table
  • MySQL statement to get min value with max ID
  • DATEDIFF Current/Date for Last Record
  • What is the logic or procedure for combining multiple DB query's results into one elegant table?
  • Modify TIMESTAMP MySQL for use as Primary Key
  • Django - Efficiently bulk create inherited models
  • MySQL Dual table Join Dual table
  • Ruby on Rails - database where sorted by id
  • MySQL 5.6 : Access denied for user 'root' @ 'localhost' when password contains backslash
  • sql query case dateadd
  • Click on one button multiple times and mySql
  • Select daily amount of specific values from same column
  • How to send e-mail to users within a database?
  • Updating self joined table
  • Convert query to a Left-Join (?) to include userid's without a match
  • How to Convert from .Net TimeZone to MySQL TimeZone
  • Syntax Error for MySQL Trigger
  • SQL Optimization - 3 Tables - Multiple SUMs - 20k records - 12 Seconds
  • MySQL: Why does query give NULL as a result of SUM?
  • MySQL join multiple lines
  • Performing JOIN between two tables
  • Get specific rows from group by clause in PostgreSQL
  • MySQL query to get the sum of a column
  • Why mongoDB takes less time for Select than Fetch time?
  • Laravel 4.2 BIT datatype issue
  • MySQL Join Query confuse
  • shadow
    Privacy Policy - Terms - Contact Us © ourworld-yourmove.org