Could you please help me to understand the beow statement
CAST ((float_column (format '--(32)9.9(6)')) AS VARCHAR(30))
What the above statement will do ? what is the purpose/use ?
This is a mix of Teradata-style and ANSI-style CASTs. It is equivalent to
CAST (CAST(float_column AS format '--(32)9.9(6)') AS VARCHAR(30))
It overrides the default formatting for the column, then uses that format to convert the value to VARCHAR representation - though note that the format could generate up to 40 characters.