I have two tables: ChatRoom Id (int) ChatUser (where i insert the users to the chat room, 1 row per user) RoomId (int) // Id from table ChatRoom UserId (int) I want to loop out all rooms where im in i do like this. But how do get the room id where the second user with the variable userId2 exists?
Tag: join
Display all Dates in a given month and year in firebird select procedure
I am making a program for Time and Attendance. I have a table with this fields here is the sample data and my desired output is this the time format of my desired output and my data is different and display the complete dates of the given month and year Answer You could solve this problem with a selectable st…
left join and where condition in joining condition
I am using Ingres 11.0 DB not sure if it will have same behavior on other DB engines ,but here is it SELECT * FROM table1 t1 LEFT JOIN table2 t2 ON t1.id = t2.fk_id WHERE t1.code = ‘CODE1’ …
Percentage from Total SUM after GROUP BY SQL Server
I have these results: With the table like: These are grouped by the person. Now I’m looking to add a column with the percentages for each person calculated from the total of all of their sums. For example: the total sum is 300, and hence I need a result like this: I have looked at code online and I have
Oracle SQL Unions error “query block has incorrect number of results columns”
I’m trying to write a query that pulls data from a lot of tables, and has about 20 unions. It’s pulling the same information repeatedly, but with more layers each time, to show a sort of tree. I want to compare the final two columns. I’m using a case to do this, and if I add a case to this
Wildcard list of numbers after comma and join on single value [closed]
Closed. This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 4 months ago. Improve this question I have TABLE A with one of the columns containing a single value and TABLE B with one of th…
Including null values in an Apache Spark Join
I would like to include null values in an Apache Spark join. Spark doesn’t include rows with null by default. Here is the default Spark behavior. val numbersDf = Seq( (“123”), (“456”), (null),…
Joining multiple tables in Access via vba/sql
I have a database of tables, each contains two columns, the first being a code, second being an amount. The tables are pulled from data created on a daily basis, where a code will have data for a …
Access 2002 SQL for joining three tables
I have been trying to get this to work for a while now. I have 3 tables. First table has the Sales for customers which include the CustomerID, DateOfSales (Which always has the first of the month). …
SBO tables Relationship (AR INVOICE-INCOMING Payment)
am making a query that bring Incoming Payments details , that include payment means , details of payment means , and then some UDFS from the related A/R invoice(s) , in addition to some UDF from an object that relate to a UDF in the AR INVOICE , now every time am running my query it show no result. Am