Helper function for quoting sql elements.
If the quote character is present in the string, it will be doubled.
NAs will be replaced with NULL.
sql_quote(x, quote)
| x | Character vector to escape. | 
| quote | Single quoting character. | 
sql_quote("abc", "'")
sql_quote("I've had a good day", "'")
sql_quote(c("abc", NA), "'")Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.