Ingres 9.2 Migration Guide - Actian

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How You Prepare Your ApplicationsUse of the ANSIDATE Data TypeIn previous releases, Ingres supported one DATE data type that stored:• Date• Time• Date and Time• Time stamp• IntervalAs of Ingres 2006 Release 2, Ingres also supports the ANSI data types:• DATE• TIME• TIMESTAMP• INTERVALThe configuration parameter date_alias controls whether the keyword DATEused for column data type refers to Ingres DATE or to ANSI DATE.Note: This applies only to the data type of DATE and does not affect the otherANSI data types.As client and server each interpret date_alias according to their own config.datsettings, we recommend that from Ingres 2006 Release 2, both the client andserver have the same setting for date_alias.When migrating from an earlier version of Ingres, the existing date data in thedatabase is not affected as the data is in Ingres DATE format.If date_alias is set to ANSIDATE, the DATE data type is now expecting data inthe ANSI date format "YYYY-MM-DD." If the column still expects data in IngresDATE format, the column format must be changed from DATE to INGRESDATE.The same applies if date_alias is set to INGRESDATE and you want to use theANSI DATE data type. The column must be declared as having a format ofANSIDATE and not DATE, as Ingres date format will be expected.28 Migration Guide
How You Load Databases and Applications into the New InstallationHow You Load Databases and Applications into the NewInstallationAfter creating a new installation, you are ready to move the databases fromthe old into the new installation.This process consists of the following steps:1. Create users, profiles, groups, and roles.2. Move databases.3. Move Ingres Star databases.4. Fix the SYSTEM_MAINTAINED column names.5. Compile applications in the new installation.Note: It is assumed that the installations have identical Ingres Locationnames. If this is not correct, then it is necessary to edit the copy in files ofunloaddb to change location names.Creating a New Ingres Development Environment 29
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Considerations for Ingres 6.4Decima
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Reserved Single KeywordsSQLQUELKeyw
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Changes to Existing FeaturesNotific
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Changes to Existing FeaturesRegiste
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Changes to Existing FeaturesCREATED
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User-Visible DBA EnhancementsGather
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Sort EnhancementsDMF Sort Enhanceme
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Large Cache SupportLarge Cache Supp
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features in 2.5 • 219 startup •
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Ingres 9.2 Migration Guide - Actian

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