How to select data from a table with the various methods that exist

Mysql 2: SELECT

Written by: maffelu , 2009-04-16 18:06:37

When you want to extract data from a database you use the command SELECT 'column' FROM. This command get's you a row of data matching the 'column' statement. The statement represents either one column, several or all.

Syntax:

SELECT column
FROM table_name;

SELECT column, column2
FROM table_name;

SELECT *
FROM table_name;

Example:

Results:

If we have this table as a base, we'll see what we get with the differant commands:

|--------------------+--------------------+--------------------|

|Name                |Age                 |Gender              |

|____________________+____________________+____________________|

|Bob                  34                   Male                |

|Silvia               67                   Female              |

|Magnus               24                   Male                |

|Lisa                 32                   Female              |

+-------------------------------------------------------------+

To select only the name column...

SELECT Name 

FROM person;

|--------------------

|Name                |

|____________________

|Bob                 |

|Silvia              |

|Magnus              |

|Lisa                |

+---------------------+

To select only the name and age column...

SELECT Name, Age 

FROM person;

|--------------------+--------------------|

|Name                |Age                 |

|____________________+____________________|

|Bob                  34                  |

|Silvia               67                  |

|Magnus               24                  |

|Lisa                 32                  |

+-----------------------------------------+

To select everything in the table...

SELECT * 

FROM person;

|--------------------+--------------------+--------------------|

|Name                |Age                 |Gender              |

|____________________+____________________+____________________|

|Bob                  34                   Male                |

|Silvia               67                   Female              |

|Magnus               24                   Male                |

|Lisa                 32                   Female              |

+-------------------------------------------------------------+

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