I have Faced group by some id and Sum other column json_encode data in select query MySQL. But how to sum total json data value? Please help Anyone… Using this, PHP 7.2, Mysql 5 and Apache 2. …
XML load is slow. Using text() when reading XML file with attribute-centric mapping
I am reading in an XML file into the database. It works fine however it is very slow. I was wondering if I can use text() in order to speed the process up similarly to the solution in this post: Xml …
Need help joining 2 tables and rolling them up in a unique way using BigQuery SQL
I have 2 tables at different granularity in a BigQuery dataset. I need to join those two and roll it up using BigQuery SQL in such a way that the value in one of the columns of the 2nd table becomes …
Calculating average number of customers that were contacted before successful conversion
I three tables: Table Name: Customer Column Name: Data Type: Description: id integer Unique id for customer company_id integer(FK to company.id) …
jdbc. preparedStatement incrementing value in sql
I have 2 tables in database authors (author_id, first_name, last_name); books (book_id, book_title, book_author_id); book_author_id is fk to author_id and when im trying to fill database …
update record value if contains substring from other column
I have two tables, one containing all unique towns names in the UK and another one containing the human-inputted country of residence. Of course humans wrote stuff like “london, uk” or “cardiff, …
Application login system not working SQL LOCAL
I’am doing my program and i need login and register system. My register system is working but login not. I have done register system SqlConnection sqlCon = new SqlConnection(“Data Source = (LocalDB)…
How I can index this query in Postgresql?
I’m trying to index my query to optimize the execution time. I tried some b-tree, hash, GIN and GISP index but none of them have been used by the Postgres planner. And even when I define …
What does the Date(0000,00,00) function equal in a SQL environment?
I am converting a Crystal Report into a SQL query. I have an IF statement in Crystal where if {loanview.FUNDING_DATE} Date(0000,00,00)…. Is Date(0000,00,00) a current date? Because I see …
Plus sign in the select clause of an SQL
I am working on an old SQL written for Oracle. There is a part of the select clause that I do not understand, even after googling and checking the questions related to the + sign with the key words …