I have data like the following: And what I want is to count the PONo, PartNo, and TrinityID fields with a value in them, and output data like this: How can I do this counting in SQL?
How to Invoke Button click Event of .ascx after checking timeout value using Javascript on its .aspx File
I have 2 Files. One is aspx and its ascx. aspx contains Javascript which calculates count down time for exam. while timer value reaches to 00:00:00 I want to invoke an event “Submit Exam” which is in ascx file. Final Paper.aspx.cs Final Paper.aspx Exam_paper.ascx Answer Make your btnSubmit a publi…
PhpMyAdmin does not show Query results operations at the bottom of Query Result
I can see Query results operations which gives me a way to export my query result for some queries but not for others where there is a query with bunch of joins. I feel its the type of Query. Is that the reason or is it the number of results? Snapshot of the actual query : Replaced the variables for
fetching a row in the middle of the table
Table reservation contains 500,000 records and bx_date varies from 2012-01-01 to 2013-01-01. 40,000 records in users table. bx_date is ‘date’ type. With the query above if I tried a date like 2012-08-22, It takes 8 secs. But if I tried 2013-01-01 It takes like 1 sec. What is the reason? Answer The…
MySQLi performance, multiple (separate) queries vs subqueries
I need to count the number of rows from different(!) tables and save the results for some kind of statistic. The script is quite simple and working as expected, but I’m wondering if it’s better to use …
Export database schema into SQL file
Is it possible in MS SQL Server 2008 to export database structure into a T-SQL file? I want to export not only tables schema but also primary keys, foreign keys, constraints, indexes, stored procedures, user defined types/functions. Also I don’t want the data to be present in this T-SQL file. Is there a…
IIF(…) not a recognized built-in function
I’m trying to use this in Microsoft SQL Server 2008 R2: But I get an error: IIF(…) is not a recognized built-in function name Is IIF() only compatible with a later version? Is there an alternate function I can use? Answer IIF comes from SQL 2012. Before then, you can use CASE:
Normalize array subscripts so they start with 1
PostgreSQL can work with array subscripts starting anywhere. Consider this example that creates an array with 3 elements with subscripts from 5 to 7: Returns: We get the first element at subscript 5: I want to normalize 1-dimensional arrays to start with array subscript 1. The best I could come up with: The s…
getting count from the same column in a mysql table?
I wanted to a count of the same field for different values for example: user{user_id, gender} Gender can have obviously male or female 🙂 i want to get count for all the males and females i.e. but im confused because they come from the same gender coloumn thanks Answer Try this for row wise result: Output: Try…
Search a whole table in mySQL for a string
I’m trying to search a whole table in mySQL for a string. I want to search all fields and all entrees of a table, returning each full entry that contains the specified text. I can’t figure out how to search multiple fields easily; here are the details: The table is “clients”. It has ab…