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Editorial Team
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Asked: 2026-05-25T14:45:19+00:00

I have 2 tables where depending on a value on the first one, i

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I have 2 tables where depending on a value on the first one, i have to select a column on the second one.

Example

table1

data1|data2|type
P3   | C   |  R
P1   | D   |  N
P2   | C   |  R
P1   | C   |  N
P2   | D   |  R
P3   | D   |  N

table2

name|revolution|nibs
C   |repeat    |may
D   |genocide  |fill

So, I want to get the values for data1 according to the type as this (R for revolution, N for nibs)

Querying for P3:

name|value
C   |repeat
D   |fill

Querying for P1

name|value
C   |may
D   |fill

Thanks

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1 Answer

  1. Editorial Team
    SELECT t2.name,  IF(t1.type='R',t2.revolution,t2.nibs) as value 
FROM table1 t1 
LEFT JOIN table2 t2 ON t1.data2 = t2.name
WHERE t1.data1 = ?
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