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| 02.19.2008 at 02:19AM PST, ID: 23173871 |
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The Solution Rating System
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CREATE TABLE test (PK int primary key, LK int not null, histtop char(1) not null ) / create or replace function test_func2(par1 int, par2 char) return int deterministic as begin if par2 = 'Y' then return par1; else return null; end if; end; / create unique index test_idx on test(test_func2(LK, histtop)) / |
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| 02.19.2008 at 02:21AM PST, ID: 20927031 |
| 02.19.2008 at 02:43AM PST, ID: 20927109 |
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CREATE TRIGGER htcu_ORC_OrgUnit` BEFORE UPDATE ON `ORC_OrgUnit` FOR EACH ROW BEGIN if ((NEW.`LK` = 0) OR (NEW.`histtop` = 'Y' AND (SELECT count(*) FROM `ORC_OrgUnit` WHERE `ORC_OrgUnit`.`histtop`='Y' AND `ORC_OrgUnit`.`LKt`=NEW.`LK` AND `ORC_OrgUnit`.`PK`<>NEW.`PK`) > 0)) THEN call RAISE_APPLICATION_ERROR(-20000, 'duplicate histtop'); END IF; END;// CREATE TRIGGER `htci_ORC_OrgUnit` BEFORE INSERT ON `ORC_OrgUnit` FOR EACH ROW BEGIN if ((NEW.`LK` = 0) OR (NEW.`histtop` = 'Y' AND (SELECT count(*) FROM `ORC_OrgUnit` WHERE `ORC_OrgUnit`.`histtop`='Y' AND `ORC_OrgUnit`.`LK`=NEW.`LK`) > 0)) THEN call RAISE_APPLICATION_ERROR(-20000, 'duplicate histtop'); END IF; END;// |
| 02.19.2008 at 03:07AM PST, ID: 20927192 |
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create table t ( lk int, histtop char(1) ) go insert into t values ( 1, 'Y') insert into t values ( 2, 'N') go alter table t add cc_lk as case when histtop = 'Y' then lk else null end go insert into t values ( 11, 'Y') insert into t values ( 12, 'N') go create index idx_cc on t (cc_lk ) go select * from t go drop table t |
| 02.19.2008 at 09:34AM PST, ID: 20930546 |
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ALTER TABLE t ADD "histtopcons" AS CASE WHEN "histtop" = 'Y' then 'L' + CAST("LK" AS VarChar(12)) else 'P' + CAST("PK" AS VarChar(12)) END
CREATE UNIQUE INDEX t_dhidx ON t ("histtopcons")
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