Displays information on a table or tables. The syntax of this command may vary across database vendors; the example below shows the correct syntax for Microsoft SQL Server. Wildcards can be used; '%' indicates a match on zero or more characters, while '_' is used to match a single character.
Results returned are TABLE_CAT, TABLE_SCHEM, TABLE_NAME, TABLE_TYPE, and REMARKS . The results are ordered by TABLE_TYPE, TABLE_QUALIFIER, TABLE_OWNER, and TABLE_NAME.
The wildcard operation and content of parameters is quite different in this function from other ODBC functions. Additionally, if a parameter contains a NULL or a wildcard, it can have different effects. For example, if owner and table contain empty quotes and catalog has a value of '%', the result set returned actually contains the names of valid catalogs (databases). If catalog and table contain empty strings and owner is '%', then the result set contains a list of valid owners for the data source specified via the DSN, since catalog is NULL. Finally, if catalog , owner , and table are all empty strings and type is '%' the result set contains a list of valid table types that can be used as values for this parameter.
To further complicate things, if specifying type , the multiple values must be comma separated, and each value must also be quoted or no values must be quoted. "'TABLE', 'VIEW'" and "'TABLE','SYSTEM TABLE'" are typical examples.
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