/*
100.NCHAR
NCHAR(<number>)
将数字转换为Union编码字符
*/
SELECT NCHAR(65) FROM DUMMY;
/*
101.NEWUID
在SAP HANA数据库创建唯一标识符
*/
SELECT NEWUID() FROM DUMMY;
/*
102.
NORMALIZE( <character_value_expression> [ , <normalized_format> ] )
<character_value_expression>:VARCHAR,NVARCHAR
<normalized_format> ::= NFC | NFD | NFKC | NFKD
*/
--不存在 --SELECT NORMALIZE(‘?‘) FROM DUMMY;
/*
103.NTH_VALUE
Aggregate function:
NTH_VALUE( <expression>, <position> <order_by_clause> )
Window function:
NTH_VALUE( <expression>, <position> <order_by_clause> ) <window_specification>
<order_by_clause> ::= ORDER BY <order_by_expression> [, <order_by_expression> [,...] ]
<order_by_expression> ::=
<column_name> [ <collate_clause> ] [ ASC | DESC ] [ NULLS FIRST | NULLS LAST ]
| <column_position> [ <collate_clause> ] [ ASC | DESC ] [ NULLS FIRST | NULLS LAST ]
<collate_clause> ::= COLLATE <collation_name>
NTILE( <number_of_buckets> ) <window_specification>
*/
--返回根据COL2排序后,COL1的第二个值 SELECT NTH_VALUE(COL1,2 ORDER BY COL2) FROM TEST_DECIMAL; SELECT "CLASS","VAL","OFFSET", NTILE(3) OVER (PARTITION BY "CLASS" ORDER BY "VAL") AS "NTILE", FIRST_VALUE("VAL") OVER (PARTITION BY "CLASS" ORDER BY "VAL") AS "FIRST", LAST_VALUE("VAL") OVER (PARTITION BY "CLASS" ORDER BY "VAL") AS "LAST", NTH_VALUE("VAL",4) OVER (PARTITION BY "CLASS" ORDER BY "VAL") AS "NTH" FROM TEST_RANK;
/*
104.NULLIF
NULLIF(<expression1>, <expression2>)
比较<exp1>,<exp2>是否相等,相等返回null;
如果不相等,返回<exp1>;
*/
SELECT NULLIF(‘diff‘, ‘same‘) FROM DUMMY;
/*
105.NUMTOHEX
NUMTOHEX(<integer> [, <integer>])
返回hex类型数据
*/
--不存在 --SELECT NUMTOHEX(-1) FROM DUMMY; --SELECT NUMTOHEX(1323) FROM DUMMY;