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remove (nearly) duplicate description
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docs/en/sql-reference/functions/tuple-functions.md
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@ -22,7 +22,7 @@ tuple(x, y, …)
## tupleElement {#tupleelement} ## tupleElement {#tupleelement}
A function that allows getting a column from a tuple. A function that allows getting a column from a tuple.
‘N’ is the column index, starting from 1. N must be a constant. ‘N’ must be a constant. ‘N’ must be a strict postive integer no greater than the size of the tuple. ‘N’ is the column index, starting from 1. ‘N’ must be a constant. ‘N’ must be a strict postive integer no greater than the size of the tuple.
There is no cost to execute the function. There is no cost to execute the function.
The function implements the operator `x.N`. The function implements the operator `x.N`.