Hello, I'm searching for two facts: How much space takes a varchar column if there is no value in it (NULL)? How much space needs a index of an integer column? Hope I post to the right list and hope anybody can help me. Thank you Greetings Achim
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TIP 9: In versions below 8.0, the planner will ignore your desire to
choose an index scan if your joining column's datatypes do not
match
