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Change relational language to use math symbols

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The symbols previously used were a Canadian script, and were looking
good enough, but they might not be installed in every machine.

Besides, all this is to workaround a Qt5 bug that prevents from
rendering those symbols at times.
This commit is contained in:
Salvo 'LtWorf' Tomaselli
2015-05-31 19:01:03 +02:00
parent 7e1c2c964c
commit 8cb08ad030
19 changed files with 30 additions and 33 deletions
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test/max_rating_in_age_range.query
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@@ -1 +1 @@
(σ age<25(people) ᑌ σ age>30(people)) ᐅᐊ ratings-πid,name,chief,age,rating(σ rating<r((ρid➡i,rating➡r(π id,rating((σ age<25(people) ᑌ σ age>30(people)) ᐅᐊ ratings))) * (σ age<25(people) ᑌ σ age>30(people)) ᐅᐊ ratings))
(σ age<25(people) ∪ σ age>30(people)) ⋈ ratings-πid,name,chief,age,rating(σ rating<r((ρid➡i,rating➡r(π id,rating((σ age<25(people) ∪ σ age>30(people)) ⋈ ratings))) * (σ age<25(people) ∪ σ age>30(people)) ⋈ ratings))