Returns the result descriptor for a column in the result set, for UltraLite ODBC.
The result descriptor includes the column name, column size, data type, number of decimal digits, and nullability.
UL_FN_SPEC SQLRETURN UL_FN_MOD SQLDescribeCol ( SQLHSTMT StatementHandle, SQLUSMALLINT ColumnNumber, SQLTCHAR * ColumnName, SQLSMALLINT BufferLength, SQLSMALLINT * NameLength, SQLSMALLINT * DataType, SQLULEN * ColumnSize, SQLSMALLINT * DecimalDigits, SQLSMALLINT * Nullable );
StatementHandle A statement handle.
ColumnNumber The 1-based column number of result data.
ColumnName A pointer to a buffer in which to return the column name.
BufferLength The length of *ColumnName, in characters.
NameLength A pointer to a buffer in which to return the total number of bytes (excluding the null-termination byte) available to return in *ColumnName.
DataType A pointer to a buffer in which to return the SQL data type of the column.
ColumnSize A pointer to a buffer in which to return the size of the column on the data source.
DecimalDigits A pointer to a buffer in which to return the number of decimal digits of the column on the data source.
Nullable A pointer to a buffer in which to return a value that indicates whether the column allows NULL values.
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