Nikola Markovinović questions

Nikola Markovinović answers

• SQL Server : splitting the results of GROUP BY into a separate columns
• improving performance in sql with multiple tables
• Total Count in Grouped TSQL Query
• INSERT or UPDATE table from another table with composite primary key
• Update field by reordering date from all records within the table
• Check if value was greater than x for y consecutive months period in changes history
• Trying to merge rows into one row with certain conditions
• Find the most Overlapped days?
• Where clause that returns values that have meet at least two of three criteria
• SUMMING a conditional statement