I have an index and I need to find out what is the row in a table with that index, in SQLite. Example: Index = 1 Table: Which is the correct SELECT that I can use to solve my problem? Answer Typically to get a specific row you can always request them by rowid, e.g. However, there are some atypical
Tag: sql
EXTRACT the date and time – (Teradata)
I am trying to extract the date and time from a field in Teradata. The field in question is: VwNIMEventFct.EVENT_GMT_TIMESTAMP Here is what the data look like: 01/02/2012 12:18:59.306000 I’d like …
PL/SQL fill variable with if-condition value
i am trying to fill a variable in PL/SQL with an if-condition value like this: v_variable := if(4 > 3) THEN ‘A’ ELSE ‘B’ END; but this doesnt work. Are there any options to do this? Answer Instead of doing this with an if, I’d go with case:
Why use GTIDs in MySQL replication?
When it comes to database replication, what is the use of global transaction identifiers? Why do we need it to prevent concurrency across the servers? How is that prevention achieved exactly? I tried to read the documentation at http://dev.mysql.com/doc/refman/5.7/en/replication-gtids.html but still could not…
Join two tables and concatenate multiple rows of a single field
Query: Current Output: Desired Output: I would like to join two tables, #Table1 and #Tabl2, on a key column, ID, and get Value field from the 2nd table… but in a single row (as shown in desired output). How (if possible) can I achieve the Desired Output? Thank you Answer For SQL Server 2017 and Later Ve…
SELECT *, SUM(NET) AS TOTAL FROM TABLE1 WHERE CLAUSE
I was hoping to add an IF statement before WHILE. Which will still display records even there is no match dv_id on both table2. It should still display records.. The COLUMN ROLLS IF No match it will display a 0.00 value. LINK>> http://i599.photobucket.com/albums/tt79/emcevo/viewphpdisplay_zpsfc6a8174.jp…
printing a value of a variable in postgresql
I have a postgresql function How can I print the value of the deletedContactId to the console? Answer You can raise a notice in Postgres as follows: Read here
Getting records with month by month, year by year and day by day from SQL Server
I’m looking for a fast and easy SQL Query to get records year by year, month by month and day by day. My database example: ID – DATE – CatID – VALUE 1 – 2013-08-06 – 32 – 243 2 – 2013-…
Rails select() and count() don’t seem to play nice
I’ve noticed something odd with Rails (4.1) ActiveRecord, where select and count sometimes mix badly: User.all.count => 103 User.all.size => 103 User.all.length => 103 So far, so good. I …
SQL non alphabetical order in WHERE IN
Let’s say I have this query: the result is: which is ordered by the alphabetical order How can I get a result order by the index of appearance in the list? basically I want this as a result: Answer This is quite a popular approach to sort things in SQL, so I’ve blogged about this example here. You…