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When adding numbers enclosed in quotes, how does MySQL calculate if we write non-numeric text after the number?

王林
Release： 2023-09-18 16:49:17
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在添加引号中包含的数字时，如果我们在数字后面写入非数字文本，MySQL 如何计算？

Suppose if we try to add a number followed by non-numeric text, then MySQL will simply discard the non-numeric text and evaluate the addition of the numeric value with a warning. The following example will demonstrate this -

Example

mysql> Select '1525 Kg' + '200 Oz'As Total;
+-------+
| Total |
+-------+
| 1725  |
+-------+
1 row in set, 2 warnings (0.00 sec)
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