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SAPHANA学习(20):SQL Function(T)

时间:2020-11-07 17:13:21      阅读:24      评论:0      收藏:0      [点我收藏+]

标签:time   abc   color   小数   to_date   VID   big   json   orm   

/*

141.TAN

TAN(<number>)

返回正切值

 

TANH(<number>)

返回指定数值参数的双曲正切值。

*/

SELECT TAN (0.0) FROM DUMMY;
SELECT TANH(1) FROM DUMMY;

/*

142. 类型转换

TO_ALPHANUM(<value>)

转换为alphanum类型

 

TO_BIGINT(<value>)

转换为bigint类型

 

TO_BINARY(<value>)

转换为binary类型

 

TO_BLOB(<value>)

 <value> ::= <binary string> | <nclob_value> | <clob_value>

转换为BLOB数据类型

 

TO_BOOLEAN(<value>)

转换为boolean类型

1,‘true’,true返回1;

0,‘false‘,false返回0;

unknown,‘unknown‘返回值;

大小写不敏感;

 

TO_CLOB(<value>)

转换为CLOB类型

 

TO_DATE(<date> [, <format>])

转换为DATE类型

 

TO_DATS(<date>)

Converts a date string into an ABAP DATE string.

 

TO_DECIMAL(<value> [, <precision>, <scale>])

转换WieDECIMAL类型

<precision>数位,1~38,默认34

<scale>小数位数

 

TO_DOUBLE(<value>)

转换为DOUBLE类型

 

TO_FIXEDCHAR(<string>, <size>)

转换<size>长度字符

 

TO_INT(<value>)

转换为INT类型

 

TO_INTEGER(<value>)

转换为INTEGER类型

 

TO_JSON_BOOLEAN(<value>)

Converts a given <value> to a boolean value in JSON format.

 

TO_NCLOB(<value>)

转换为NCLOB类型

 

TO_NVARCHAR(<value> [, <format>])

转换为NVARCHAR类型

TO_VARCHAR(<value> [, <format>])

转换为VARCHAR类型

--转换符号

--9 - Return the number in the specified position; otherwise, return nothing.

--0 - Return the number in the specified position; otherwise, return a zero (0).

--S - Return the sign symbol (either + or -) for the value.

--E - Divide the number into significant part and exponent part.

--% - Multiply <value> by 10^2 and adds a percent symbol (%) at the end.

--. (a period) - Insert a period in the specified position.

--All other characters other than the items above: Return the character in the specified position.

 

TO_REAL(<value>)

转换为REAL类型

 

TO_SECONDDATE(<date> [, <format>])

转换为SECONDDATE数据类型

 

TO_SMALLDECIMAL(<value>)

转换为SMALLDECIMAL类型

 

TO_SMALLINT(<value>)

转换为SMALLINT类型

 

TO_TIME(<time> [, <format>])

转换为TIME类型

 

TO_TIMESTAMP(<date> [, <format>])

转换为TIMESTAMP类型

 

TO_TINYINT(<value>)

转换为TINYINT类型

 

*/

SELECT TO_ALPHANUM (10) FROM DUMMY;
SELECT TO_BIGINT (10) FROM DUMMY;
SELECT TO_BIGINT (10.1) FROM DUMMY;
SELECT TO_BINARY (abc) FROM DUMMY;

SELECT TO_BLOB(TO_BINARY(abcde)) "to blob" FROM DUMMY;
SELECT TO_BLOB(TO_CLOB(abc)) "to blob" FROM DUMMY;

SELECT TO_BOOLEAN(0) FROM DUMMY;
SELECT TO_BOOLEAN(true) FROM DUMMY;
SELECT TO_BOOLEAN(False) FROM DUMMY;

SELECT TO_CLOB (TO_CLOB converts the value to a CLOB data type) FROM DUMMY;
SELECT TO_DATE(2010/01/12, YYYY/MM/DD) FROM DUMMY;
--YYYYMMDD类型
SELECT TO_DATS (2010-01-12) "abap date" FROM DUMMY;
SELECT TO_DECIMAL(7654321.888888, 10, 3) FROM DUMMY;
SELECT TO_DOUBLE (15.12) FROM DUMMY;
--返回An
SELECT TO_FIXEDCHAR (Ant, 2) FROM DUMMY;

SELECT TO_INT (123.3) FROM DUMMY;
SELECT TO_INTEGER (11) FROM DUMMY;

--创建COLLECTION,
--CREATE COLLECTION TEST_COLLECTION;
--INSERT INTO TEST_COLLECTION VALUES (‘{"k1" : true}‘);
--SELECT * FROM TEST_COLLECTION WHERE "k1" = TO_JSON_BOOLEAN(TRUE);

SELECT TO_NCLOB (TO_NCLOB converts the value to a NCLOB data type) FROM DUMMY;

--转换日期格式
SELECT TO_NVARCHAR(TO_DATE(2009/12/31), YY-MM-DD) FROM DUMMY;
SELECT TO_NVARCHAR(1, 00.00) FROM Dummy;    --> 01.00
SELECT TO_NVARCHAR(100, 00.00) FROM Dummy;          --> 100.00
SELECT TO_NVARCHAR(100, 9999.00) FROM Dummy;        --> 100.00
SELECT TO_NVARCHAR(100, 0000.00) FROM Dummy;        --> 0100.00
SELECT TO_NVARCHAR(100, S0000.00) FROM Dummy;       --> +0100.00
SELECT TO_NVARCHAR(-100, S0000.00) FROM Dummy;      --> -0100.00
SELECT TO_NVARCHAR(-100, S0.0E0) FROM Dummy;        --> -1.0E2
SELECT TO_NVARCHAR(-0.001, S0.0E0) FROM Dummy;      --> -1.0E-3
SELECT TO_NVARCHAR(-0.001, S0.0E00) FROM Dummy;     --> -1.0E-03
SELECT TO_NVARCHAR(1000, 9,999.00) FROM Dummy;      --> 1,000.00
SELECT TO_NVARCHAR(1000, $9,999.00) FROM Dummy;     --> $1,000.00
SELECT TO_NVARCHAR(1000, $9,999.99) FROM Dummy;     --> $1,000.

SELECT 3*TO_REAL (15.12)  FROM DUMMY;
SELECT TO_SECONDDATE (2010-01-11 13:30:00, YYYY-MM-DD HH24:MI:SS) FROM DUMMY;
SELECT TO_SMALLDECIMAL(7654321.89) FROM DUMMY;
SELECT TO_SMALLINT(10.5) FROM DUMMY;

SELECT TO_TIME(08:30 AM, HH:MI AM) FROM DUMMY;
SELECT TO_TIMESTAMP (2010-01-11 13:30:00, YYYY-MM-DD HH24:MI:SS) FROM DUMMY;

SELECT TO_TINYINT (10) FROM DUMMY;

/*

143.TRIM

TRIM([[LEADING | TRAILING | BOTH] <trim_char> FROM] <string> )

去除前置or后置字符

默认BOTH

 

TRIM_ARRAY(<array_value_expression>, <truncate_length>)

去除Array中指定数目元素

*/

--去除前置,后置字符
SELECT TRIM (a FROM aaa123456789aa) FROM DUMMY;

--去除前置字符
SELECT TRIM (LEADING a FROM aaa123456789aa) FROM DUMMY;

--移除3个元素
SELECT TRIM_ARRAY(VAL, 3) FROM ARRAY_TEST;

 

SAPHANA学习(20):SQL Function(T)

标签:time   abc   color   小数   to_date   VID   big   json   orm   

原文地址:https://www.cnblogs.com/tangToms/p/13939786.html

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