mucio questions

mucio answers

• What is difference between ANSI and non-ANSI joins, and which do you recommend? [duplicate]
• overlapping shape and character in ggplot legend
• update row if count(*) > n
• Merge rows with equal and unequal data
• Count sequential matching words in two strings oracle
• SQL select distinct but "keep first"?
• Detect all columns in an oracle table which have the same value in each row
• what is the difference between e.keyCode and e.which? [duplicate]
• How to migrate data from MongoDB to SQL-Server? [closed]
• Database design, variable number of columns