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mysql-test/r/case.result: Removed unnecessary drop commands mysql-test/t/case.test: Removed unnecessary drop commands
41 lines
1.7 KiB
Text
41 lines
1.7 KiB
Text
#
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# Testing of CASE
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#
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drop table if exists t1;
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select CASE "b" when "a" then 1 when "b" then 2 END;
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select CASE "c" when "a" then 1 when "b" then 2 END;
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select CASE "c" when "a" then 1 when "b" then 2 ELSE 3 END;
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select CASE BINARY "b" when "a" then 1 when "B" then 2 WHEN "b" then "ok" END;
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select CASE "b" when "a" then 1 when binary "B" then 2 WHEN "b" then "ok" END;
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select CASE concat("a","b") when concat("ab","") then "a" when "b" then "b" end;
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select CASE when 1=0 then "true" else "false" END;
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select CASE 1 when 1 then "one" WHEN 2 then "two" ELSE "more" END;
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select CASE 2.0 when 1 then "one" WHEN 2.0 then "two" ELSE "more" END;
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select (CASE "two" when "one" then "1" WHEN "two" then "2" END) | 0;
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select (CASE "two" when "one" then 1.00 WHEN "two" then 2.00 END) +0.0;
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select case 1/0 when "a" then "true" else "false" END;
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select case 1/0 when "a" then "true" END;
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select (case 1/0 when "a" then "true" END) | 0;
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select (case 1/0 when "a" then "true" END) + 0.0;
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select case when 1>0 then "TRUE" else "FALSE" END;
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select case when 1<0 then "TRUE" else "FALSE" END;
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#
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# Test bug when using GROUP BY on CASE
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#
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create table t1 (a int);
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insert into t1 values(1),(2),(3),(4);
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select case a when 1 then 2 when 2 then 3 else 0 end as fcase, count(*) from t1 group by fcase;
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select case a when 1 then "one" when 2 then "two" else "nothing" end as fcase, count(*) from t1 group by fcase;
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drop table t1;
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#
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# Test MAX(CASE ... ) that can return null
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#
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create table t1 (row int not null, col int not null, val varchar(255) not null);
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insert into t1 values (1,1,'orange'),(1,2,'large'),(2,1,'yellow'),(2,2,'medium'),(3,1,'green'),(3,2,'small');
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select max(case col when 1 then val else null end) as color from t1 group by row;
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drop table t1;
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