histogram with just a few columns from a table

I want to get a histogram of a few columns from a table (4 - 6-... 22)


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    Hello

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    Prnt attribute values and if sure that null values don't raise a NPE. Add a white character to NULL

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    " "));

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    }

    }

    rowHtmlBuf.append (this.addRowEnd ());

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    }

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                                    *
    ERROR at line 1:
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      2  as
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     COL1                                               NUMBER
    
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      2  /
    
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    SQL>
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    Hello rovnyart!

    1. removal of columns in the table:

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    The reason why your code did nothing is probably because your loop, using the history table. And since there no data in the historical table first, there is nothing to loop.

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