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SQL??? Structured Query Language???????????????????????????????????????????????????????
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3?????Navicat??
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1?CREATE TABLE????
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2?INSERT(??)
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4?DELETE(??)

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5?DISTINCT????
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6?Select????
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3?MAX()
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4?MIN()
MIN?????????????NULL????????

5?SUM()
SUM??????????

6?ROUND()
ROUND ???????????????????


7?FORMAT()
FORMAT ???????????????

SQL????
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2?LIKE
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3?IN
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4?JOIN
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5?ALTER
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6?UNION
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7?AUTO-INCREMENT(??)
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- ASC:????????
- DESC:????????
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??DESC????????????????????SQL????
9?GROUP BY
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10?HAVING
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11?DEFAULT
DEFAULT?????????????

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