drop columnsql
ALTER TABLE table_name
DROP COLUMN column_namedrop columnsql
ALTER TABLE table_name
DROP COLUMN column_nameremove name of a column
M
a b c
1[1,] 1 4 7
2[2,] 2 5 8
3[3,] 3 6 9
row.names(M)<- NULL ; colnames(M)<- NULL
M
[,1] [,2] [,3]
[1,] 1 4 7
[2,] 2 5 8
[3,] 3 6 9Copyright © 2021 Codeinu
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