First, give us a po fraught pit goods sent the wrong Bowen: https: //blog.csdn.net/lichangpeng1988/article/details/21955615
This blog is entirely the result of the author's own fabricated, the actual results are as follows, or 2.00 may be noted, is not the main spoken Fair 2
The following give us a correct reference Bowen,
https://blog.csdn.net/shayeyekai/article/details/17841433
# MySQL of the CAST () and the CONVERT () function is used to obtain the value of a type, and generates a value of another type. Both specific syntax is as follows:
the CAST (value AS type);
the CONVERT (value, type);
Next is my own test
Test 1: If the type does not convert to decimal char type, the following results
Test 2: If you do not add 0+, is completely not have any effect
Test 3: The correct presentation
The following is to convert the same test performed, it differs from the frame representation at
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