|
- Calculate difference between 2 date times in Oracle SQL
I have a table as follows: Filename - varchar Creation Date - Date format dd mm yyyy hh24:mi:ss Oldest cdr date - Date format dd mm yyyy hh24:mi:ss How can I calcuate the difference in hours minut
- Copying PostgreSQL database to another server - Stack Overflow
Run this command with database name, you want to backup, to take dump of DB pg_dump -U {user-name} {source_db} -f {dumpfilename sql} eg pg_dump -U postgres mydbname -f mydbnamedump sql
- How to count occurrences of a column value efficiently in SQL?
and if data in "age" column has similar records (i e many people are 25 years old, many others are 32 and so on), it causes confusion in aligning right count to each student in order to avoid it, I joined the tables on student ID as well
- How to keep one variable constant with other one changing with row in . . .
Lets say I have one cell A1, which I want to keep constant in a calculation For example, I want to calculate a value like this: =(B1+4) (A1) How do I make it so that if I drag that cell to make a
- How to resolve this error: Py4JJavaError: An error occurred while . . .
Currently I'm doing PySpark and working on DataFrame I've created a DataFrame: from pyspark sql import * import pandas as pd spark = SparkSession builder appName( quot;DataFarme quot;) getOrCreate
- How do you loop in a Windows batch file? - Stack Overflow
Conditionally perform a command several times syntax-FOR-Files FOR %%parameter IN (set) DO command syntax-FOR-Files-Rooted at Path FOR R [[drive:]path] %%parameter IN (set) DO command syntax-FOR-Folders FOR D %%parameter IN (folder_set) DO command syntax-FOR-List of numbers FOR L %%parameter IN (start,step,end) DO command
- Syntax of for-loop in SQL Server - Stack Overflow
If you are not expert in SQL, you should not be considering using a loop There are only a few conditions where one is needed and most of the rest of the time, using a loop is the equivalent of pushing your car instead of driving it
- How do I get the length of a list? - Stack Overflow
Besides len you can also use operator length_hint (requires Python 3 4+) For a normal list both are equivalent, but length_hint makes it possible to get the length of a list-iterator, which could be useful in certain circumstances:
|
|
|