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Administrator
h2database
Commits
8e224e8a
提交
8e224e8a
authored
2月 28, 2018
作者:
Evgenij Ryazanov
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电子邮件补丁
差异文件
Check precision for FLOAT data type and describe it in documentation
上级
c7668d41
隐藏空白字符变更
内嵌
并排
正在显示
4 个修改的文件
包含
71 行增加
和
2 行删除
+71
-2
help.csv
h2/src/docsrc/help/help.csv
+4
-2
Parser.java
h2/src/main/org/h2/command/Parser.java
+12
-0
double.sql
h2/src/test/org/h2/test/scripts/datatypes/double.sql
+28
-0
real.sql
h2/src/test/org/h2/test/scripts/datatypes/real.sql
+27
-0
没有找到文件。
h2/src/docsrc/help/help.csv
浏览文件 @
8e224e8a
...
@@ -2412,10 +2412,11 @@ DECIMAL(20, 2)
...
@@ -2412,10 +2412,11 @@ DECIMAL(20, 2)
"
"
"Data Types","DOUBLE Type","
"Data Types","DOUBLE Type","
{ DOUBLE [ PRECISION ] | FLOAT | FLOAT8 }
{ DOUBLE [ PRECISION ] | FLOAT
[ ( precisionInt ) ]
| FLOAT8 }
","
","
A floating point number. Should not be used to represent currency values, because
A floating point number. Should not be used to represent currency values, because
of rounding problems.
of rounding problems.
If precision value is specified for FLOAT type name, it should be from 25 to 53.
Mapped to ""java.lang.Double"".
Mapped to ""java.lang.Double"".
","
","
...
@@ -2423,10 +2424,11 @@ DOUBLE
...
@@ -2423,10 +2424,11 @@ DOUBLE
"
"
"Data Types","REAL Type","
"Data Types","REAL Type","
{ REAL | FLOAT4 }
{ REAL | FLOAT
( precisionInt ) | FLOAT
4 }
","
","
A single precision floating point number. Should not be used to represent currency
A single precision floating point number. Should not be used to represent currency
values, because of rounding problems.
values, because of rounding problems.
Precision value for FLOAT type name should be from 0 to 24.
Mapped to ""java.lang.Float"".
Mapped to ""java.lang.Float"".
","
","
...
...
h2/src/main/org/h2/command/Parser.java
浏览文件 @
8e224e8a
...
@@ -4446,6 +4446,18 @@ public class Parser {
...
@@ -4446,6 +4446,18 @@ public class Parser {
}
}
read
(
")"
);
read
(
")"
);
}
}
}
else
if
(
dataType
.
type
==
Value
.
DOUBLE
&&
original
.
equals
(
"FLOAT"
))
{
if
(
readIf
(
"("
))
{
int
p
=
readPositiveInt
();
read
(
")"
);
if
(
p
>
53
)
{
throw
DbException
.
get
(
ErrorCode
.
INVALID_VALUE_SCALE_PRECISION
,
Integer
.
toString
(
p
));
}
if
(
p
<=
24
)
{
dataType
=
DataType
.
getDataType
(
Value
.
FLOAT
);
}
original
=
original
+
'('
+
p
+
')'
;
}
}
else
if
(
dataType
.
type
==
Value
.
ENUM
)
{
}
else
if
(
dataType
.
type
==
Value
.
ENUM
)
{
if
(
readIf
(
"("
))
{
if
(
readIf
(
"("
))
{
java
.
util
.
List
<
String
>
enumeratorList
=
new
ArrayList
<>();
java
.
util
.
List
<
String
>
enumeratorList
=
new
ArrayList
<>();
...
...
h2/src/test/org/h2/test/scripts/datatypes/double.sql
浏览文件 @
8e224e8a
...
@@ -2,3 +2,31 @@
...
@@ -2,3 +2,31 @@
-- and the EPL 1.0 (http://h2database.com/html/license.html).
-- and the EPL 1.0 (http://h2database.com/html/license.html).
-- Initial Developer: H2 Group
-- Initial Developer: H2 Group
--
--
CREATE
TABLE
TEST
(
D1
DOUBLE
,
D2
DOUBLE
PRECISION
,
D3
FLOAT
,
D4
FLOAT
(
25
),
D5
FLOAT
(
53
));
>
ok
ALTER
TABLE
TEST
ADD
COLUMN
D6
FLOAT
(
54
);
>
exception
SELECT
COLUMN_NAME
,
DATA_TYPE
,
TYPE_NAME
,
COLUMN_TYPE
FROM
INFORMATION_SCHEMA
.
COLUMNS
WHERE
TABLE_NAME
=
'TEST'
ORDER
BY
ORDINAL_POSITION
;
>
COLUMN_NAME
DATA_TYPE
TYPE_NAME
COLUMN_TYPE
>
----------- --------- --------- ----------------
>
D1
8
DOUBLE
DOUBLE
>
D2
8
DOUBLE
DOUBLE
PRECISION
>
D3
8
DOUBLE
FLOAT
>
D4
8
DOUBLE
FLOAT
(
25
)
>
D5
8
DOUBLE
FLOAT
(
53
)
>
rows
(
ordered
):
5
SCRIPT
NODATA
NOPASSWORDS
NOSETTINGS
TABLE
TEST
;
>
SCRIPT
>
--------------------------------------------------------------------------------------------------------
>
-- 0 +/- SELECT COUNT(*) FROM PUBLIC.TEST;
>
CREATE
CACHED
TABLE
PUBLIC
.
TEST
(
D1
DOUBLE
,
D2
DOUBLE
PRECISION
,
D3
FLOAT
,
D4
FLOAT
(
25
),
D5
FLOAT
(
53
)
);
>
CREATE
USER
IF
NOT
EXISTS
SA
PASSWORD
''
ADMIN
;
>
rows
:
3
DROP
TABLE
TEST
;
>
ok
h2/src/test/org/h2/test/scripts/datatypes/real.sql
浏览文件 @
8e224e8a
...
@@ -2,3 +2,30 @@
...
@@ -2,3 +2,30 @@
-- and the EPL 1.0 (http://h2database.com/html/license.html).
-- and the EPL 1.0 (http://h2database.com/html/license.html).
-- Initial Developer: H2 Group
-- Initial Developer: H2 Group
--
--
CREATE
TABLE
TEST
(
D1
REAL
,
D2
FLOAT4
,
D3
FLOAT
(
0
),
D4
FLOAT
(
24
));
>
ok
ALTER
TABLE
TEST
ADD
COLUMN
D5
FLOAT
(
-
1
);
>
exception
SELECT
COLUMN_NAME
,
DATA_TYPE
,
TYPE_NAME
,
COLUMN_TYPE
FROM
INFORMATION_SCHEMA
.
COLUMNS
WHERE
TABLE_NAME
=
'TEST'
ORDER
BY
ORDINAL_POSITION
;
>
COLUMN_NAME
DATA_TYPE
TYPE_NAME
COLUMN_TYPE
>
----------- --------- --------- -----------
>
D1
7
REAL
REAL
>
D2
7
REAL
FLOAT4
>
D3
7
REAL
FLOAT
(
0
)
>
D4
7
REAL
FLOAT
(
24
)
>
rows
(
ordered
):
4
SCRIPT
NODATA
NOPASSWORDS
NOSETTINGS
TABLE
TEST
;
>
SCRIPT
>
---------------------------------------------------------------------------------
>
-- 0 +/- SELECT COUNT(*) FROM PUBLIC.TEST;
>
CREATE
CACHED
TABLE
PUBLIC
.
TEST
(
D1
REAL
,
D2
FLOAT4
,
D3
FLOAT
(
0
),
D4
FLOAT
(
24
)
);
>
CREATE
USER
IF
NOT
EXISTS
SA
PASSWORD
''
ADMIN
;
>
rows
:
3
DROP
TABLE
TEST
;
>
ok
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