Shulou(Shulou.com)06/01 Report--

DML:INSERT, DELETE, UPDATE, SELECT

INSERT INTO:

INSERT [INTO] tbl_name [(col1,...)] {VALUES | VALUE} (val1,...), (...),...

Note:

Character type: quotation mark

Numeric: cannot use quotation marks

SELECT:

(1) SELECT * FROM tbl_name

(2) SELECT col1, col2, FROM tbl_name

When displayed, fields can be displayed as aliases

Col_name AS col_alias

(3) SELECT col1, FROM tbl_name WHERE clause

WHERE clause: used to specify selection criteria

Col_name operator value:

Age > 30

Operator (1):

>, =

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