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2e404c9850
Item_func_equal erroneously derived is_null() from the parent class. Overriding it to return false because <=> can never return NULL.
61 lines
1.4 KiB
Text
61 lines
1.4 KiB
Text
# Initialise
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--disable_warnings
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drop table if exists t1,t2;
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--enable_warnings
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#
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# Testing of the <=> operator
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#
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#
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# First some simple tests
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#
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select 0<=>0,0.0<=>0.0,0E0=0E0,"A"<=>"A",NULL<=>NULL;
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select 1<=>0,0<=>NULL,NULL<=>0;
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select 1.0<=>0.0,0.0<=>NULL,NULL<=>0.0;
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select "A"<=>"B","A"<=>NULL,NULL<=>"A";
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select 0<=>0.0, 0.0<=>0E0, 0E0<=>"0", 10.0<=>1E1, 10<=>10.0, 10<=>1E1;
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select 1.0<=>0E1,10<=>NULL,NULL<=>0.0, NULL<=>0E0;
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#
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# Test with tables
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#
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create table t1 (id int, value int);
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create table t2 (id int, value int);
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insert into t1 values (1,null);
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insert into t2 values (1,null);
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select t1.*, t2.*, t1.value<=>t2.value from t1, t2 where t1.id=t2.id and t1.id=1;
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select * from t1 where id <=>id;
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select * from t1 where value <=> value;
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select * from t1 where id <=> value or value<=>id;
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drop table t1,t2;
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#
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# Bug #12612: quoted bigint unsigned value and the use of "in" in where clause
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#
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create table t1 (a bigint unsigned);
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insert into t1 values (4828532208463511553);
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select * from t1 where a = '4828532208463511553';
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select * from t1 where a in ('4828532208463511553');
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drop table t1;
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--echo #End of 4.1 tests
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--echo # Start of 10.5 tests
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--echo #
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--echo # MDEV-21029 Incorrect result for expression with the <=> operator and IS NULL
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--echo #
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CREATE TABLE t0(c0 INT);
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INSERT INTO t0 VALUES (1);
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SELECT (c0 > (NULL <=> 0)) IS NULL AS c1 FROM t0;
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DROP TABLE t0;
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--echo # End of 10.5 tests
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