MIS - SQL Cheat Sheet - SQL STUDY SHEET DDL CREATE TABLE...

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SQL STUDY SHEET DDL: CREATE TABLE tblName ( Data_Types: column_name data_type attribute1 attribute 2…., Char(#): Each Entry will be stored as # characters column_name data_type attribute1 attribute 2…., VarChar(#):  Entry will be stored as _ characters up to #. column_name data_type attribute1 attribute 2…., Int:  Integers only table checks/attributes ) Money:  Specified monetary unit according to DB. DateTime:  A date/time CREATE INDEX idxName ON tblName Decimal(x,y): ? X=total # of chars, y=# of decimals (first_column order, second_column order, …) *Order =ASC or DESC; ASC is default order* Attributes: Null or Not Null ALTER TABLE tblName Default Values:  Default ___ ADD     column_name    data_type    attribute Primary Key DROP COLUMN     column_name  References  tblName(field name) ALTER COLUMN   column_name  new_data_type     where field name is primary key of some other table.
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