SQL对字符串进行排序

 1 BEGIN
 2 DECLARE inString CHAR(7);
 3 SET inString = ‘DCDBAAB‘;
 4 
 5 REPLICATE(‘A‘, (DATA_LENGTH(inString)-DATA_LENGTH(REPLACE(inString,‘A‘,‘‘))))
 6 ||
 7 REPLICATE(‘B‘, (DATA_LENGTH(inString)-DATA_LENGTH(REPLACE(inString,‘B‘,‘‘))))
 8 ||
 9 REPLICATE(‘C‘, (DATA_LENGTH(inString)-DATA_LENGTH(REPLACE(inString,‘C‘,‘‘))))
10 ||
11 REPLICATE(‘D‘, (DATA_LENGTH(inString)-DATA_LENGTH(REPLACE(inString,‘D‘,‘‘))))
12 
13 END;