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Editorial Team
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Asked: 2026-06-06T06:13:21+00:00

I have table of data that is sorted as follows: Item | Sample |

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I have table of data that is sorted as follows:

Item    |   Sample  |   Value   |
---------------------------------
Part A  |   Top     |   1.0     |
Part A  |   Bottom  |   4.0     |
Part A  |   Left    |   3.0     |
Part A  |   Right   |   2.0     |
Part A  |   Center  |   5.0     |
Part B  |   Top     |   6.0     |
Part B  |   Bottom  |   1.0     |
Part B  |   Left    |   1.0     |
Part B  |   Right   |   5.0     |
Part B  |   Center  |   9.0     |
Part C  |   Top     |   7.0     |
Part C  |   Bottom  |   5.0     |
Part C  |   Left    |   1.0     |
Part C  |   Right   |   2.0     |
Part C  |   Center  |   1.0     |

That I’m trying to perform further statistical analysis on. For those calculations, it would be ideal for the data to be outputted like this:

Item    |   Top     |   Bottom  |   Left    |   Right   |   Center  |
---------------------------------------------------------------------
Part A  |   1.0     |   4.0     |   3.0     |   2.0     |   5.0     |
Part B  |   3.0     |   1.0     |   1.0     |   5.0     |   9.0     |
Part C  |   7.0     |   5.0     |   1.0     |   2.0     |   1.0     |

I believe in MSSQL you can use the PIVOT or UNPIVOT functions to accomplish this, but I’m unsure in Postgresql. All the similar solutions I found seemed vague. Any help or guidance would be appreciated!

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1 Answer

  1. Editorial Team

    Use the crosstab() function of the tablefunc extension for that.

    I have posted multiple examples with links and detailed explanation on SO recently. Try a search.

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