标签:int -- set specified 字符串 ber assigned bsp font
/*
Partitions an input set into disjoint subsets by assigning a bin number to each row.
BINNING( <binning_param> => <expression> [ {, <binning_parameter> => <expression> } ... ] ) <window_specification>
<binning_param> ::= VALUE | BIN_COUNT | BIN_WIDTH | TILE_COUNT | STDDEV_COUNT
VALUE is always required.
It specifies the column that binning is applied to.
When BIN_WIDTH is used, the input column must have a numeric data type.
BIN_COUNT specifies the number of equal-width bins.
BIN_WIDTH specifies the width of the bins.
TILE_COUNT specifies the number of bins with equal number of records.
STDDEV_COUNT specifies the number of standard deviations left and right from the mean.
The appropriate binning method is selected based on the parameter specified – exactly one of the last four parameters must be non-NULL.
The value assigned to binning method parameter must be an integer expression.
*/
CREATE ROW TABLE weather (station INT, ts DATE, temperature FLOAT); INSERT INTO weather VALUES(1, ‘2014-01-01‘, 0); INSERT INTO weather VALUES(1, ‘2014-01-02‘, 3); INSERT INTO weather VALUES(1, ‘2014-01-03‘, 4.5); INSERT INTO weather VALUES(1, ‘2014-01-04‘, 6); INSERT INTO weather VALUES(1, ‘2014-01-05‘, 6.3); INSERT INTO weather VALUES(1, ‘2014-01-06‘, 5.9); INSERT INTO weather VALUES(1, ‘2015-01-01‘, 1); INSERT INTO weather VALUES(1, ‘2015-01-02‘, 3.4); INSERT INTO weather VALUES(1, ‘2015-01-03‘, 5); INSERT INTO weather VALUES(1, ‘2015-01-04‘, 6.7); INSERT INTO weather VALUES(1, ‘2015-01-05‘, 4.6); INSERT INTO weather VALUES(1, ‘2015-01-06‘, 6.9); --OVER子句不能指定 <window_order_by_clause>,也不能指定任何窗口框架,因为binning函数在整个分区上工作。 SELECT *, BINNING( VALUE => temperature, BIN_COUNT => 4) OVER () AS bin_num FROM weather;
/*
BINTOHEX(<expression>)
将二进制值转换为VARCHAR数据类型十六进制值。如果输入值不是二进制值,则首先将其转换为二进制值。
BINTONHEX(<expression>)
将二进制值转换为NVARCHAR数据类型十六进制值。如果输入值不是二进制值,则首先将其转换为二进制值。
BINTOSTR(<varbinary_string>)
Converts a VARBINARY string <varbinary_string> to a character string with CESU-8 encoding.
*/
SELECT BINTOHEX(‘AB‘) FROM DUMMY; SELECT BINTONHEX(‘AB‘) FROM DUMMY; SELECT BINTOSTR (‘416E74‘) FROM DUMMY;
/*
BITAND(<value1>, <value2>)
按位与操作
<value1>,<value2>必须是非负整数,VARBINARY类型
BITAND会将输入字符串类型值转换为BIGINT,BITOR,BITXOR,BITNOT Function转换为INT
BITCOUNT(<expression>)
<expression>必须是整数或VARBINARY类型
返回整型数据,位数
BITNOT(<expression>)
按位执行非操作
BITOR(<expression1>, <expression2>)
<expression1>,<expression2>必须非负整数或VARBINARY类型
按位执行或操作
BITXOR(<expression1>, <expression2>)
按位执行异或操作
<expression1>, <expression2>必须是非负整数或VARBINARY类型
BITSET(<target_num>, <start_bit>, <num_to_set>)
Sets a specific number of bits to 1 in a target number from a specified 1-based index position.
<target_num> ::= <string_literal>
The VARBINARY number where the bits are to be set.
<start_bit> ::= <unsigned_integer>
A 1-based index position where the first bit is to be set.
<num_to_set> ::= <unsigned_integer>
The number of bits to be set in the target number.
BITUNSET(<target_num>, <start_bit>, <num_to_unset>)
Sets a specified number of bits to 0 in a target number from a specified 1-based index position.
*/
SELECT BITAND (255, 123) FROM DUMMY; SELECT BITCOUNT (255) FROM DUMMY; SELECT BITNOT (255) FROM DUMMY; SELECT BITOR (255, 123) FROM DUMMY; --255=>1111 1111 123=>0111 1011,进行异或运算 1000 0100 SELECT BITXOR (255, 123) FROM DUMMY; SELECT BITSET (‘1111‘, 1, 3) FROM DUMMY; SELECT BITUNSET (‘ffff‘, 1, 3) FROM DUMMY;
标签:int -- set specified 字符串 ber assigned bsp font
原文地址:https://www.cnblogs.com/tangToms/p/13868159.html