Oracle-inställningar :
CREATE TABLE your_table (
name VARCHAR2(7)
CHECK ( name IS NULL OR REGEXP_LIKE( name, '^[A-D](\+[A-D]){0,3}$', 'i' ),
value VARCHAR2(200),
A VARCHAR2(50),
B VARCHAR2(50),
C VARCHAR2(50),
D VARCHAR2(50)
);
INSERT INTO your_table ( name, value, a, b, c, d )
SELECT 'a+b+c+d', 'x2+x1+x3+x5', NULL, NULL, NULL, NULL FROM DUAL UNION ALL
SELECT 'a+d+c', 'y7+y3+y4', NULL, NULL, NULL, NULL FROM DUAL;
Uppdatera uttalande :
MERGE INTO your_table dst
USING (
WITH splitstrings ( rid, name, value, col, val, lvl ) AS (
SELECT ROWID,
UPPER( name ),
value,
REGEXP_SUBSTR( UPPER( name ), '[^+]+', 1, 1 ),
REGEXP_SUBSTR( value, '[^+]+', 1, 1 ),
1
FROM your_table
WHERE name IS NOT NULL
AND value IS NOT NULL
UNION ALL
SELECT rid,
name,
value,
REGEXP_SUBSTR( name, '[^+]+', 1, lvl + 1 ),
REGEXP_SUBSTR( value, '[^+]+', 1, lvl + 1 ),
lvl + 1
FROM splitstrings
WHERE lvl < LEAST(
REGEXP_COUNT( name, '[^+]+' ),
REGEXP_COUNT( value, '[^+]+' )
)
)
SELECT *
FROM ( SELECT rid, col, val FROM splitstrings )
PIVOT ( MAX( val ) FOR col IN ( 'A' AS a, 'B' AS b, 'C' AS c, 'D' AS d ) )
) src
ON ( src.rid = dst.ROWID )
WHEN MATCHED THEN
UPDATE
SET A = COALESCE( src.A, dst.A ),
B = COALESCE( src.B, dst.B ),
C = COALESCE( src.C, dst.C ),
D = COALESCE( src.D, dst.D );
Utdata :
SELECT * FROM your_table;
NAME VALUE A B C D
------- ----------- -- -- -- --
a+b+c+d x2+x1+x3+x5 x2 x1 x3 x5
a+d+c y7+y3+y4 y7 y4 y3
Version 2:
Oracle-inställningar :
CREATE TABLE your_source (
name VARCHAR2(50),
value VARCHAR2(50)
);
INSERT INTO your_source
SELECT 'a+b+c+d', 'x2+x1+x3+x5' FROM DUAL UNION ALL
SELECT 'a+d+c', 'y7+y3+y4' FROM DUAL;
CREATE TABLE your_destination (
-- name VARCHAR2(50),
-- value VARCHAR2(50),
A VARCHAR2(20),
B VARCHAR2(20),
C VARCHAR2(20),
D VARCHAR2(20)
);
Infoga uttalande :
INSERT INTO your_destination ( /* name, value, */ A, B, C, D )
WITH splitstrings ( rid, name, value, col, val, lvl ) AS (
SELECT ROWID,
UPPER( name ),
value,
REGEXP_SUBSTR( UPPER( name ), '[^+]+', 1, 1 ),
REGEXP_SUBSTR( value, '[^+]+', 1, 1 ),
1
FROM your_source
WHERE name IS NOT NULL
AND value IS NOT NULL
UNION ALL
SELECT rid,
name,
value,
REGEXP_SUBSTR( name, '[^+]+', 1, lvl + 1 ),
REGEXP_SUBSTR( value, '[^+]+', 1, lvl + 1 ),
lvl + 1
FROM splitstrings
WHERE lvl < LEAST(
REGEXP_COUNT( name, '[^+]+' ),
REGEXP_COUNT( value, '[^+]+' )
)
)
SELECT /* name, value, */ A,B,C,D
FROM ( SELECT rid, /* name, value, */ col, val FROM splitstrings )
PIVOT ( MAX( val ) FOR col IN ( 'A' AS a, 'B' AS b, 'C' AS c, 'D' AS d ) );
Utdata :
SELECT * FROM your_destination
A B C D
-- -- -- --
x2 x1 x3 x5
y7 y4 y3