Transpose SQL code into MATLAB

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Cristian Martin 2022-6-15

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1741280-transpose-sql-code-into-matlab

Hi,

I have an SQL query that is ok in Workbench, the results are I expected:

SELECT * FROM prices.prices WHERE (Var5 <= 125 and Var5 >= 124 OR Var6 <= 125 and Var6 >= 124 OR Var7 <= 125 and Var7 >= 124) AND (Var8 <= 6 and Var8 >= 5 OR Product <= 6 and Product >= 5 OR Var10 <= 6 and Var10 >= 5);

In Matlab I want to do a query in data base, based on 4 variables 2 min and 2 max values that search in 6 different columns . For only 2 variables min and max value work perfectly but if I add the other two variables to extend the selection in other three columns it failed to show wanted results.

This is the half working:

sqlquery = ['SELECT * FROM prices.prices WHERE Var5 <= ',caseta2 ' and Var5 >= ',caseta1 ' OR Var6 <= ',caseta2 ' and Var6 >= ',caseta1 ' OR Var7 <= ',caseta2 ' and Var7 >= ',caseta1];

And full code:

sqlquery = ['SELECT * FROM prices.prices WHERE Var5 <= ',caseta2 ' and Var5 >= ',caseta1 ' OR Var6 <= ',caseta2 ' and Var6 >= ',caseta1 ' OR Var7 <= ',caseta2 ' and Var7 >= ',caseta1 ' AND Var8 <= ',caseta4 ' and Var8 >= ',caseta3 ' OR Product <= ',caseta4 ' and Product >= ',caseta3 ' OR Var10 <= ',caseta4 ' and Var10 >= ',caseta3 ];

selectie = fetch(conn,sqlquery);

In the Workbench I could used paranthesis and "AND" between criteria but in Matlab I don't know how to use it