I have two same queries but with different where condition values When I ran this two queries they both producing different result for first query the result and for the 2nd one Can anyone explain Me why Postgres is making a BitMap Scan instead of Index Only scan ? Answer The short version is that Postgres ha…
How do I translate this SQL query to Typeorm
I have this query that I tested in the query tool, and I now wish to apply this into Typeorm syntax I have tried this approach but it’s not 100% correct: Answer Assuming your class defined for the entity menu_entry is MenuEntry, typeorm query statement would be as follows-
Adding column in table with the values in another if matched
I have two tables: table1 A B C A1 B1 C1 A2 B2 C2 A3 B3 C3 A4 B4 C4 A5 B5 C5 A6 B6 C6 table2 A D A1 D1 A3 D3 A5 D5 A6 D6 I would like to have table 1 updated with a column D which shows the value in column D joining by A. However,
How to make multiple aggregate function without break / divided the fields
Is it possible to make an aggregate function without break / divided the grouping fields? I make a query but it will divided into duplicate value in the first field, here is my query: My expected result: Emp. Name Count of Prod Total Account % Prod Duration Trip Emp.1 62 63 98,41% 30 Emp.2 45 48 93,75% 28 Emp…
Only show rows where certain data does not match
I have a table that contains if an employee has logged into work or not. A new row is inserted when they log in and when they log out. What I am wanting to do is result on the employees that have not logged out on todays date. The table structure is as below: Employee_Ref ShiftDate In_or_Out 191 2021-05-07 00…
SQL Server 2017 Convert Varchar to Date
I have a date stored as nvarchar which I cannot seem to convert to a date. I have tried the following but get the error message Conversion failed when converting date and/or time from character string Any ideas here? Answer Find the values that are causing the problem using try_convert(): Once you see what va…
How to write SQL query for filtering the row which has two values for a column?
Consider the table as below – Table A Parent_Id Child_Id is_active P1 C1 Y P1 C2 N P2 C3 N Need the SQL query to identify the parent_id which has all child_id with ‘N’. In the above table the output should be Parent_Id P2 Answer or
How to call a function and dupe the return value in a SELECT query?
I’ve defined a function CREATE_UUID() to generate UUID. I want to INSERT INTO…SELECT to copy a table but with two new columns with the same value. But doing so will call the function twice with different values. How should I modify this query so that it won’t have different values for two co…
Find number of rows with each property value, taking into account only the most recent rows in SQL
I have a database with tables that represents “edits” to “pages”. Every edit has an ID and a timestamp and a “status”, which has certain discrete values. Pages have IDs and also have “categories”. I wish to find the number of pages with each status within a give…
Input selected row and ignore duplicate row
I have a problem that I need to insert a selected row from the table to another table based on last_update data or last_transaction_product. last_update is the data updated from the table, and last_transaction_product is the latest transaction from my shop, and then my row has duplicate data but has a differe…