擅长:python、mysql、java
<pre><code>sql = "SELECT \
CATINFO.Chip_ID AS Cat, \
CATDIET.Diet_Req AS Diet, \
CATMEDICAL.Med_his AS Med, \
CATREQ.Add_Req AS Req \
FROM CATINFO \
LEFT JOIN CATDIET ON CATINFO.Chip_ID = CATDIET.Chip_ID \
LEFT JOIN CATMEDICAL ON CATINFO.Chip_ID = CATMEDICAL.Chip_ID \
LEFT JOIN CATREQ ON CATINFO.Chip_ID = CATREQ.chip_ID "
</code></pre>