permutation of two columns in mysql table [closed]

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Closed 4 days ago.

permutation of two columns data of table

 column 1     column 2
 1             3
 2             4

i need all possible permutations limited to two characters like want

result as ho to do as this

12 13 14 21 22 23 24 31 32 33 34 41 42 43 44

all possible sets limited to two characters thanks in php or mysql query

here are some sollutions but not on my request mysql way nearer

来源：https://stackoverflow.com/questions/59235326/permutation-of-two-columns-in-mysql-table