Re: [fpc-pascal] Re: RE : RE : Re: SQLDB GetSchemaInfoSQL for indexes etc?

[michael . vancanneyt]

On Thu, 19 Apr 2012, Reinier Olislagers wrote:

On 19-4-2012 15:02, Ludo Brands wrote:

Ludo here I do not understand what do you want to say. may be, that my
english is not so good ;-)
Can you explain please what is your proposal regarding to stIndexes ?

stIndexes is currently not implemented: keep it that way (or drop it) but
add and implement stTableConstraints, stReferentialConstraints,
stKeyColumnUsage,
stConstraintColumnUsage and stConstraintTableUsage. And why not some other
missing information_schema views like 'views' or 'schemata'.

Delphi compatibility? Delphi adodb defines and implements the following:
type TSchemaInfo = (siAsserts, siCatalogs, siCharacterSets, siCollations,
siColumns, siCheckConstraints, siConstraintColumnUsage,
siConstraintTableUsage, siKeyColumnUsage, siReferentialConstraints,
siTableConstraints, siColumnsDomainUsage, siIndexes, siColumnPrivileges,
siTablePrivileges, siUsagePrivileges, siProcedures, siSchemata,
siSQLLanguages, siStatistics, siTables, siTranslations, siProviderTypes,
siViews, siViewColumnUsage, siViewTableUsage, siProcedureParameters,
siForeignKeys, siPrimaryKeys, siProcedureColumns);
Fine with Ludo's proposal; dropping stIndexes... and adding new ISO
compliant stuff if needed.
Delphi has at least adodb and dbexpress with various implementations....
so not much of a standard.

Keeping to the information_schema standard seems like a good idea -
especially because it will make it easier to easily get useful info from
an ISO SQL 92+ compliant database..

Anybody against this? Michael? Joost?

Not against.

Has anybody used this functionality in sqldb at all?

No. For a simple reason:

I implemented all this information in fpdatadict; 
I think it belongs more there, and definitely not in the basic data API.

Michael.
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