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Mere som dette

LUIS FABRIZIO ZARATE PAUCAR

af LUIS FABRIZIO ZARATE PAUCAR

Panglici

af Paul Negrea

DO VS MAKE

af Jessica Puentes

Concept map Word Luca Hritcu

af Luca Hritcu

sentences

Insert

Add rows of data to a table.

The general format is: INSERT INTO table_name (column_name, …) VALUES (column_value, …); or INSERT INTO table_name VALUES (column_value, …);

Create Table

The SQL CREATE TABLE command is used to create a database table and defines its data columns.

It has the following format: CREATE TABLE tablename (column_name datatype [constraint_name constraint type], …..)

Delete

Delete rows of data from a table.

The general format is: DELETE FROM tablename WHERE condition(s); e.g. DELETE FROM company WHERE company_ID = 10;

Update

To change a column value in a row or rows the UPDATE command can be used.

This has the following format UPDATE tablename SET condition WHERE condition e.g. UPDATE company SET company_name = ‘BMB’ WHERE company_ID = 10;