La mayoría de las bases de datos incluye columnas de "intervalo inicial de IP" e "intervalo final de IP", cuyos valores son, normalmente, enteros de ocho dígitos. Es probable que sus datos tengan direcciones IP en forma de cadena de números de nueve dígitos separados por puntos. Por ejemplo, 1.23.456.789. Para determinar la ubicación de la dirección IP, hay que convertir esta en un entero y averiguar en qué intervalo de IP existe esa dirección.
Primero hay que crear dos uniones entre los datos de la dirección IP y la base de datos de direcciones IP.(INT(
LEFT([IP Address],(FIND([IP Address], ".")))
))*16777216+
(INT(
LEFT(
MID([IP Address],
FIND([IP Address],".")+1),
FIND(MID([IP Address],FIND([IP Address],".")+1),".")-1)
))*65536+
(INT(
MID([IP Address],
FIND([IP Address], ".", FIND([IP Address], ".") +1)+1,
(FIND([IP Address], ".", FIND([IP Address], ".", FIND([IP Address],"." ) +1) +1)) - (FIND([IP Address], ".", FIND([IP Address], ".") +1))-1
)
))*256+
(INT(
RIGHT([IP Address],
LEN([IP Address]) -
FIND([IP Address], ".", FIND([IP Address], ".", FIND([IP Address],"." ) +1) +1)
)(INT(
LEFT([IP Address],(FIND([IP Address], ".")))
))*16777216+
(INT(
LEFT(
MID([IP Address],
FIND([IP Address],".")+1),
FIND(MID([IP Address],FIND([IP Address],".")+1),".")-1)
))*65536+
(INT(
MID([IP Address],
FIND([IP Address], ".", FIND([IP Address], ".") +1)+1,
(FIND([IP Address], ".", FIND([IP Address], ".", FIND([IP Address],"." ) +1) +1)) - (FIND([IP Address], ".", FIND([IP Address], ".") +1))-1
)
))*256+
(INT(
RIGHT([IP Address],
LEN([IP Address]) -
FIND([IP Address], ".", FIND([IP Address], ".", FIND([IP Address],"." ) +1) +1)
)
))001458025
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