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C to SQL: Numeric

The identifiers for the numeric ODBC C data types are:

SQL_C_STINYINT SQL_C_SLONG
SQL_C_UTINYINT SQL_C_ULONG
SQL_C_TINYINT SQL_C_LONG
SQL_C_SSHORT SQL_C_FLOAT
SQL_C_USHORT SQL_C_DOUBLE
SQL_C_SHORT SQL_C_NUMERIC
SQL_C_SBIGINT SQL_C_UBIGINT

The following table shows the ODBC SQL data types to which numeric C data may be converted. For an explanation of the columns and terms in the table, see “Converting Data from C to SQL Data Types.”


SQL type identifier

Test
SQL-
STATE

SQL_CHAR
SQL_VARCHAR
SQL_LONGVARCHAR
Number of digits <= column byte length.
Number of digits > column byte length.
n/a
22001

SQL_DECIMAL
SQL_NUMERIC
SQL_TINYINT
SQL_SMALLINT
SQL_INTEGER
SQL_BIGINT
Data converted without truncation or with truncated of fractional digits.
Data converted with truncation of whole digits.
n/a

22003

SQL_REAL
SQL_FLOAT
SQL_DOUBLE
Data is within the range of the data type to which the number is being converted.
Data is outside the range of the data type to which the number is being converted.
n/a


22003

SQL_BIT
Data is 0 or 1.
Data is greater than 0, less than 2, and not equal to 1.
Data is less than 0 or greater than or equal to 2.
n/a
22001

22003

SQL_INTERVAL_YEAR [a]
SQL_INTERVAL_MONTH [a]
SQL_INTERVAL_DAY [a]
SQL_INTERVAL_HOUR [a]
SQL_INTERVAL_MINUTE [a]
SQL_INTERVAL_SECOND [a]
Data not truncated.
Data truncated.
n/a
22015

[a] These conversions are supported only for the exact numeric data types (SQL_C_STINYINT, SQL_C_UTINYINT, SQL_C_SSHORT, SQL_C_USHORT, SQL_C_SLONG, SQL_C_ULONG, or SQL_C_NUMERIC). They are not supported for the approximate numeric data types (SQL_C_FLOAT or SQL_C_DOUBLE). Exact numeric C data types cannot be converted to an interval SQL type whose interval precision is not a single field.





The driver ignores the length/indicator value when converting data from the numeric C data types and assumes that the size of the data buffer is the size of the numeric C data type. The length/indicator value is passed in the StrLen_or_Ind argument in SQLPutData and in the buffer specified with the StrLen_or_IndPtr argument in SQLBindParameter. The data buffer is specified with the DataPtr argument in SQLPutData and the ParameterValuePtr argument in SQLBindParameter.