matrix - Create Matrix from tdbc::odbc $resultset allrows -as lists

Question

I have a result set that I am returning from a result set. I am wanting to turn that into a matrix object to perform in memory lookups on the data. I have never used Matrix and am stuck on getting it to work. Can anyone provide an example?

Answer 1

add row据我所知，直接使用矩阵的方法可以避免通过 CSV 的行程。

::struct::matrix Mtrx
Mtrx add columns [llength [$SQLResultSet columns]]
while {[$SQLResultSet nextlist Return_Row]} {
    Mtrx add row $Return_Row
}

Answer 2

我想到了：

::struct::matrix Mtrx
Mtrx add columns [llength [$SQLResultSet columns]]
while {[$SQLResultSet nextlist Return_Row]} {
    ::csv::split2matrix Mtrx [::csv::join $Return_Row] {,} {expand auto}
}

从这里你可以做你需要的。