1, case insensitive
2, some statements may be retracted wrap, such as from Hello * SELECT;
. 3, single-line comments:
+ Notes content
--+(空格) +注释内容
4, multi-line comments:
/ /
1, case insensitive
2, some statements may be retracted wrap, such as from Hello * SELECT;
. 3, single-line comments:
--+(空格) +注释内容
4, multi-line comments:
/ /