32 is generated using uuid mysql

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() Function, the first three sets of numbers in the MySQL UUID generated from the time stamp, temporarily holds the fourth group of unique time stamp,
a fifth set of numbers is a punctuation IEEE 802 node values, the only secure a space. Using the UUID () function, may be generated temporally, spatially values are unique.
It is said that as long as the use UUID, can not see two duplicate UUID values.

---

mysql> select UUID();
+--------------------------------------+
| UUID()                               |
+--------------------------------------+
| 28743986-61cf-11e9-aad1-97f2fa0e547e |
+--------------------------------------+
1 row in set (0.00 sec)
 
mysql> select replace(UUID(),'-','');
+----------------------------------+
| replace(UUID(),'-','')           |
+----------------------------------+
| 3b0d8fd461cf11e9aad197f2fa0e547e |
+----------------------------------+
1 row in set (0.00 sec)
 
mysql>