Table: single_chart
Columns: entered_a
weeks_in_top_10
single
artist
peak
peak_reached_a
weeks_at_peak

Question: If the peak reached is 6 cannot handle non-empty timestamp argument! 1992, what is the entered?
SQL: SELECT "entered_a" FROM single_chart WHERE "peak_reached_a" = '6 Cannot handle non-empty timestamp argument! 1992'

Question: if the peak is 9, how many weeks was it in the top 10?
SQL: SELECT MAX("weeks_in_top_10") FROM single_chart WHERE "peak" = 9

Question: What was the peak reached for a single with 4 weeks in the top 10 and entered in 7 cannot handle non-empty timestamp argument! 1992?
SQL: SELECT "peak_reached_a" FROM single_chart WHERE "entered_a" = '7 Cannot handle non-empty timestamp argument! 1992' AND "weeks_in_top_10" = 4