dws
数学函数
更新时间：
2020/04/21 GMT+08:00
**
输入：**
1 |
expr1 ** expr2
|
输出
1 |
expr1 ^ expr2
|
MOD
输入：MOD
1 |
expr1 MOD expr2
|
输出
1 |
expr1 % expr2
|
NULLIFZERO
可以使用tdMigrateNULLIFZERO参数来配置NULLIFZERO迁移。
输入：NULLIFZERO
1 2 |
SELECT NULLIFZERO(expr1) FROM tab1
WHERE … ;
|
输出
1 2 |
SELECT NULLIF(expr1, 0) FROM tab1
WHERE … ;
|
ZEROIFNULL
可以使用tdMigrateZEROIFNULL参数来配置ZEROIFNULL迁移。
输入：ZEROIFNULL
1 2 |
SELECT ZEROIFNULL(expr1) FROM tab1
WHERE … ;
|
输出
1 2 |
SELECT COALESCE(expr1, 0) FROM tab1
WHERE … ;
|
声明Hexadecimal Character Literal值
输入
SELECT (COALESCE(TRIM(BOTH FROM VTX_D_RPT_0017_WMSE12_01_01.ID),'')) ||'7E'xc||(COALESCE(TRIM(BOTH FROM VTX_D_RPT_0017_WMSE12_01_01.Code),'')) ||'7E'xc||(COALESCE(TRIM(BOTH FROM VTX_D_RPT_0017_WMSE12_01_01.Description),'')) ||'7E'xc||(COALESCE(TRIM(BOTH FROM VTX_D_RPT_0017_WMSE12_01_01.Name),'')) ||'7E'xc||(COALESCE(TRIM(BOTH FROM VTX_D_RPT_0017_WMSE12_01_01.Host_Product_Id),'')) FROM DP_VTXEDW.VTX_D_RPT_0017_WMSE12_01_01 VTX_D_RPT_0017_WMSE12_01_01 WHERE 1=1 ;
输出
SELECT (COALESCE(TRIM(BOTH FROM VTX_D_RPT_0017_WMSE12_01_01.ID),'')) ||E'\x7E'||(COALESCE(TRIM(BOTH FROM VTX_D_RPT_0017_WMSE12_01_01.Code),'')) ||E'\x7E'||(COALESCE(TRIM(BOTH FROM VTX_D_RPT_0017_WMSE12_01_01.Description),'')) ||E'\x7E'||(COALESCE(TRIM(BOTH FROM VTX_D_RPT_0017_WMSE12_01_01.Name),'')) ||E'\x7E'||(COALESCE(TRIM(BOTH FROM VTX_D_RPT_0017_WMSE12_01_01.Host_Product_Id),'')) FROM DP_VTXEDW.VTX_D_RPT_0017_WMSE12_01_01 VTX_D_RPT_0017_WMSE12_01_01 WHERE 1=1 ;
声明Hexadecimal Binary Literal值
输入
CREATE MULTISET TABLE bvalues (IDVal INTEGER, CodeVal BYTE(2)); INSERT INTO bvalues VALUES (112193, '7879'XB) ; SELECT IDVal, CodeVal FROM bvalues WHERE CodeVal = '7879'XB ;
输出
CREATE TABLE bvalues (IDVal INTEGER, CodeVal BYTEA); INSERT INTO bvalues VALUES (112193, BYTEA '\x7879') ; SELECT IDVal, CodeVal FROM bvalues WHERE CodeVal = BYTEA '\x7879' ;
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