MySQL轉換度，分，秒到度十進制

Question

我有多行度分秒，我需要轉換查詢。

36°19'11.46" N = 36.31985

95°36'02.22" W = 95.600617

每一行會是不同的。我已經堅持了兩天。這甚至有可能嗎？

Answer 1

以下應該工作：

SELECT D + M/60 + S/3600; 

例如，在MySQL：

SELECT 36 + 19/60 + 11.46/3600; 

回報：36.319850

Answer 2

尼斯實用生活：使用SEC_TO_TIME反向問題的解決方案（度到DMS）建-in MySQL功能：

CREATE FUNCTION `geocoords`(lon double, lat double) RETURNS varchar(24) CHARSET cp1251 
    NO SQL 
    DETERMINISTIC 
begin  
    declare alon double; 
    declare alat double; 
    declare slon varchar(12); 
    declare slat varchar(12); 
    set alon = abs(lon); 
    set alat = abs(lat); 
    set slon = TIME_FORMAT(SEC_TO_TIME(alon*3600), '%H°%i''%s"'); 
    set slat = TIME_FORMAT(SEC_TO_TIME(alat*3600), '%H°%i''%s"'); 
    if lon>0 then 
    set slon = concat(slon, 'E'); 
    elseif lon<0 then 
    set slon = concat(slon, 'W'); 
    end if; 
    if lat>0 then 
    set slat = concat(slat, 'N'); 
    elseif lat<0 then 
    set slat = concat(slat, 'S'); 
    end if; 
    return concat(slat, ' ', slon); 
end 

SELECT geocoords（30.550157546997，50.344024658203）

50°20'38 「N 30°33'01」 E

Answer 3

我結束了這個建築，並與我所需要的完美無缺。你會注意到我給數字加了一個C，這是爲了標記它們，所以如果它已經被轉換了，它將不會繼續轉換。

UPDATE 
    MasterTable 
SET 
    MasterTable.Latitude_A = MasterTable.Latitude, 
    MasterTable.Longitude_A = MasterTable.Longitude 
WHERE 
    ProjectID = 'ProjectAlpha' 
    and Sequence = '0' 
    and MasterTable.Latitude NOT LIKE '%C%' 
    and MasterTable.Longitude NOT LIKE '%C%'; 

TRUNCATE TABLE gpsconvert; 
    INSERT into gpsconvert(gpsconvert.`Account Number`,gpsconvert.Latitude,gpsconvert.Longitude) 
SELECT 
     MasterTable.AccountNumber, 
     MasterTable.Latitude, 
     MasterTable.Longitude 
FROM 
    MasterTable 
WHERE 
    MasterTable.ProjectID = 'ProjectAlpha' 
    and MasterTable.Sequence = '0' 
    and MasterTable.Latitude NOT LIKE '%c%' 
    and MasterTable.Longitude NOT LIKE '%c%' 
    and MasterTable.Latitude <> '' 
    and MasterTable.Longitude <> ''; 

UPDATE 
    gpsconvert 
SET 
    gpsconvert.LatDegree = LEFT(gpsconvert.Latitude,2), 
    gpsconvert.LatMinutes = SUBSTRING(gpsconvert.Latitude,-7,2), 
    gpsconvert.LatSeconds = SUBSTRING(gpsconvert.latitude,-5,5), 
    gpsconvert.LatDecimal = gpsconvert.LatDegree + (gpsconvert.LatMinutes/60) + (gpsconvert.LatSeconds/3600), 
    gpsconvert.LongDegree = LEFT(gpsconvert.Longitude,2), 
    gpsconvert.LongMinutes = SUBSTRING(gpsconvert.Longitude,-7,2), 
    gpsconvert.LongSeconds = SUBSTRING(gpsconvert.Longitude,-5,5), 
    gpsconvert.LongDecimal = gpsconvert.LongDegree +  (gpsconvert.LongMinutes/60) + (gpsconvert.LongSeconds/3600); 

UPDATE 
    MasterTable 
INNER JOIN 
    gpsconvert on gpsconvert.`Account Number` = MasterTable.AccountNumber 
SET 
    MasterTable.Latitude = CONCAT(gpsconvert.LatDecimal,'c'), 
    MasterTable.Longitude = CONCAT(gpsconvert.LongDecimal,'c') 
WHERE 
    MasterTable.ProjectID = 'ProjectAlpha' 
    and MasterTable.Sequence = '0' 
    and MasterTable.AccountNumber = gpsconvert.`Account Number`