• store numeric numbers with plus minus signs

    From juliani.moon@gmail.com@21:1/5 to All on Fri Apr 14 13:22:26 2023
    I didn't find this topic in the discussion history ... wonder what's the best practice in MySQL to store numeric numbers with plus minus signs (+/-), times sign such as in 2.328x10-15, such that they can be safely stored, easily handled/recognized by
    most current programs in perl/php/etc and
    shown in modern web browsers.

    My problem came from a practice developing a MySQL database since 20 years ago, when such numeric numbers are copied/pasted into MySQL via web forms and displayed well on web when retrieved back then. However in the following years these old data were
    started to be shown as with black
    diamond squares or other types of partial-garbaged number.

    Over 10+ years ago when these strange character showed up I can doggle for different character coding methods in a browser to view them. But nowadays all browsers are made "smart" as no longer
    to provide these user options.

    I understand this came along with different/evolving char coding methods; and the data we curated into the database over different times in history were with changing character (or language) settings. I wonder is there a good solution to bring them all
    to a current character safe environment, and kept safe for the future?

    j

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  • From Jerry Stuckle@21:1/5 to julian...@gmail.com on Fri Apr 14 18:54:37 2023
    On 4/14/2023 4:22 PM, julian...@gmail.com wrote:
    I didn't find this topic in the discussion history ... wonder what's the best practice in MySQL to store numeric numbers with plus minus signs (+/-), times sign such as in 2.328x10-15, such that they can be safely stored, easily handled/recognized by
    most current programs in perl/php/etc and
    shown in modern web browsers.

    My problem came from a practice developing a MySQL database since 20 years ago, when such numeric numbers are copied/pasted into MySQL via web forms and displayed well on web when retrieved back then. However in the following years these old data were
    started to be shown as with black
    diamond squares or other types of partial-garbaged number.

    Over 10+ years ago when these strange character showed up I can doggle for different character coding methods in a browser to view them. But nowadays all browsers are made "smart" as no longer
    to provide these user options.

    I understand this came along with different/evolving char coding methods; and the data we curated into the database over different times in history were with changing character (or language) settings. I wonder is there a good solution to bring them all
    to a current character safe environment, and kept safe for the future?

    j


    The SQL standard states a plus sign is optional whereas a minus sign is required for negative numbers. Addtionally, the times sign is not
    allowed. Instead, "E" is used, as in 2.328E-15.

    This is standard in many programming languages, also.

    And of course you store numeric values in a numeric type column.

    Also, NEVER copy/paste from a web form when working with ANY database.
    ALWAYS validate the information before inserting to prevent SQL
    injection exploits.

    --
    ==================
    Remove the "x"'s from my email address
    Jerry Stuckle
    stucklex.jerryx@gmail.com
    ==================

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From juliani.moon@gmail.com@21:1/5 to Jerry Stuckle on Sat Apr 15 14:11:09 2023
    On Friday, April 14, 2023 at 5:55:23 PM UTC-5, Jerry Stuckle wrote:
    On 4/14/2023 4:22 PM, julian...@gmail.com wrote:
    I didn't find this topic in the discussion history ... wonder what's the best practice in MySQL to store numeric numbers with plus minus signs (+/-), times sign such as in 2.328x10-15, such that they can be safely stored, easily handled/recognized by
    most current programs in perl/php/etc and
    shown in modern web browsers.

    My problem came from a practice developing a MySQL database since 20 years ago, when such numeric numbers are copied/pasted into MySQL via web forms and displayed well on web when retrieved back then. However in the following years these old data
    were started to be shown as with black
    diamond squares or other types of partial-garbaged number.

    Over 10+ years ago when these strange character showed up I can doggle for different character coding methods in a browser to view them. But nowadays all browsers are made "smart" as no longer
    to provide these user options.

    I understand this came along with different/evolving char coding methods; and the data we curated into the database over different times in history were with changing character (or language) settings. I wonder is there a good solution to bring them
    all to a current character safe environment, and kept safe for the future?

    j
    The SQL standard states a plus sign is optional whereas a minus sign is required for negative numbers. Addtionally, the times sign is not
    allowed. Instead, "E" is used, as in 2.328E-15.

    This is standard in many programming languages, also.

    And of course you store numeric values in a numeric type column.

    Also, NEVER copy/paste from a web form when working with ANY database. ALWAYS validate the information before inserting to prevent SQL
    injection exploits.

    --
    ==================
    Remove the "x"'s from my email address
    Jerry Stuckle
    stuckle...@gmail.com
    ==================
    Thank you Jerry for the heads up. Perhaps we should consider a catch on web forms for "illegal" characters and suggest fixes. Otherwise it was difficult to expect all to practice the same way.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From juliani.moon@gmail.com@21:1/5 to julian...@gmail.com on Sat Apr 15 14:23:34 2023
    On Saturday, April 15, 2023 at 4:11:11 PM UTC-5, julian...@gmail.com wrote:
    On Friday, April 14, 2023 at 5:55:23 PM UTC-5, Jerry Stuckle wrote:
    On 4/14/2023 4:22 PM, julian...@gmail.com wrote:
    I didn't find this topic in the discussion history ... wonder what's the best practice in MySQL to store numeric numbers with plus minus signs (+/-), times sign such as in 2.328x10-15, such that they can be safely stored, easily handled/recognized
    by most current programs in perl/php/etc and
    shown in modern web browsers.

    My problem came from a practice developing a MySQL database since 20 years ago, when such numeric numbers are copied/pasted into MySQL via web forms and displayed well on web when retrieved back then. However in the following years these old data
    were started to be shown as with black
    diamond squares or other types of partial-garbaged number.

    Over 10+ years ago when these strange character showed up I can doggle for different character coding methods in a browser to view them. But nowadays all browsers are made "smart" as no longer
    to provide these user options.

    I understand this came along with different/evolving char coding methods; and the data we curated into the database over different times in history were with changing character (or language) settings. I wonder is there a good solution to bring them
    all to a current character safe environment, and kept safe for the future?

    j
    The SQL standard states a plus sign is optional whereas a minus sign is required for negative numbers. Addtionally, the times sign is not
    allowed. Instead, "E" is used, as in 2.328E-15.

    This is standard in many programming languages, also.

    And of course you store numeric values in a numeric type column.

    Also, NEVER copy/paste from a web form when working with ANY database. ALWAYS validate the information before inserting to prevent SQL
    injection exploits.

    --
    ==================
    Remove the "x"'s from my email address
    Jerry Stuckle
    stuckle...@gmail.com
    ==================
    Thank you Jerry for the heads up. Perhaps we should consider a catch on web forms for "illegal" characters and suggest fixes. Otherwise it was difficult to expect all to practice the same way.

    By the way what would be the way to store numbers with plus/minus sign (� or ± or U+00B1 or ±). THANKS!

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jerry Stuckle@21:1/5 to julian...@gmail.com on Sat Apr 15 21:08:49 2023
    On 4/15/2023 5:11 PM, julian...@gmail.com wrote:
    On Friday, April 14, 2023 at 5:55:23 PM UTC-5, Jerry Stuckle wrote:
    On 4/14/2023 4:22 PM, julian...@gmail.com wrote:
    I didn't find this topic in the discussion history ... wonder what's the best practice in MySQL to store numeric numbers with plus minus signs (+/-), times sign such as in 2.328x10-15, such that they can be safely stored, easily handled/recognized by
    most current programs in perl/php/etc and
    shown in modern web browsers.

    My problem came from a practice developing a MySQL database since 20 years ago, when such numeric numbers are copied/pasted into MySQL via web forms and displayed well on web when retrieved back then. However in the following years these old data
    were started to be shown as with black
    diamond squares or other types of partial-garbaged number.

    Over 10+ years ago when these strange character showed up I can doggle for different character coding methods in a browser to view them. But nowadays all browsers are made "smart" as no longer
    to provide these user options.

    I understand this came along with different/evolving char coding methods; and the data we curated into the database over different times in history were with changing character (or language) settings. I wonder is there a good solution to bring them
    all to a current character safe environment, and kept safe for the future?

    j
    The SQL standard states a plus sign is optional whereas a minus sign is
    required for negative numbers. Addtionally, the times sign is not
    allowed. Instead, "E" is used, as in 2.328E-15.

    This is standard in many programming languages, also.

    And of course you store numeric values in a numeric type column.

    Also, NEVER copy/paste from a web form when working with ANY database.
    ALWAYS validate the information before inserting to prevent SQL
    injection exploits.

    --
    ==================
    Remove the "x"'s from my email address
    Jerry Stuckle
    stuckle...@gmail.com
    ==================
    Thank you Jerry for the heads up. Perhaps we should consider a catch on web forms for "illegal" characters and suggest fixes. Otherwise it was difficult to expect all to practice the same way.

    You should ALWAYS validate ALL data before allowing it to be used in a
    SQL statement. Failure to do so is a major security exposure.

    And you can set rules so that everyone does it the same way.


    --
    ==================
    Remove the "x"'s from my email address
    Jerry Stuckle
    stucklex.jerryx@gmail.com
    ==================

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jerry Stuckle@21:1/5 to julian...@gmail.com on Sat Apr 15 21:15:43 2023
    On 4/15/2023 5:23 PM, julian...@gmail.com wrote:
    On Saturday, April 15, 2023 at 4:11:11 PM UTC-5, julian...@gmail.com wrote:
    On Friday, April 14, 2023 at 5:55:23 PM UTC-5, Jerry Stuckle wrote:
    On 4/14/2023 4:22 PM, julian...@gmail.com wrote:
    I didn't find this topic in the discussion history ... wonder what's the best practice in MySQL to store numeric numbers with plus minus signs (+/-), times sign such as in 2.328x10-15, such that they can be safely stored, easily handled/recognized
    by most current programs in perl/php/etc and
    shown in modern web browsers.

    My problem came from a practice developing a MySQL database since 20 years ago, when such numeric numbers are copied/pasted into MySQL via web forms and displayed well on web when retrieved back then. However in the following years these old data
    were started to be shown as with black
    diamond squares or other types of partial-garbaged number.

    Over 10+ years ago when these strange character showed up I can doggle for different character coding methods in a browser to view them. But nowadays all browsers are made "smart" as no longer
    to provide these user options.

    I understand this came along with different/evolving char coding methods; and the data we curated into the database over different times in history were with changing character (or language) settings. I wonder is there a good solution to bring them
    all to a current character safe environment, and kept safe for the future?

    j
    The SQL standard states a plus sign is optional whereas a minus sign is
    required for negative numbers. Addtionally, the times sign is not
    allowed. Instead, "E" is used, as in 2.328E-15.

    This is standard in many programming languages, also.

    And of course you store numeric values in a numeric type column.

    Also, NEVER copy/paste from a web form when working with ANY database.
    ALWAYS validate the information before inserting to prevent SQL
    injection exploits.

    --
    ==================
    Remove the "x"'s from my email address
    Jerry Stuckle
    stuckle...@gmail.com
    ==================
    Thank you Jerry for the heads up. Perhaps we should consider a catch on web forms for "illegal" characters and suggest fixes. Otherwise it was difficult to expect all to practice the same way.

    By the way what would be the way to store numbers with plus/minus sign (� or ± or U+00B1 or ±). THANKS!

    You need to ensure your database uses a charset that accepts those
    characters.

    --
    ==================
    Remove the "x"'s from my email address
    Jerry Stuckle
    stucklex.jerryx@gmail.com
    ==================

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From J.O. Aho@21:1/5 to julian...@gmail.com on Sun Apr 16 12:00:58 2023
    On 4/15/23 23:23, julian...@gmail.com wrote:

    By the way what would be the way to store numbers with plus/minus sign (� or ± or U+00B1 or ±). THANKS!

    You need to see to using the right charset and that it's the same on the
    front end as in database.

    --
    //Aho

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From juliani.moon@gmail.com@21:1/5 to J.O. Aho on Thu Apr 20 08:20:04 2023
    On Sunday, April 16, 2023 at 5:01:02 AM UTC-5, J.O. Aho wrote:
    On 4/15/23 23:23, julian...@gmail.com wrote:

    By the way what would be the way to store numbers with plus/minus sign (� or ± or U+00B1 or ±). THANKS!
    You need to see to using the right charset and that it's the same on the front end as in database.

    --
    //Aho

    Thank you Jerry and Aho! It's much appreciated for you to point me to a right direction.

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