CHAR
CHAR [AUTO | n]
CHAR=AUTO - returns all data back in CHARACTER data type,
however it sets the size on a per-column basis to the smallest size that
can safely return all possible values.
CHAR=n - returns all data back in CHARACTER data type
and sets the buffer size to length n.
Converts binary data to character format, where n is the length of the
converted character data. The default is AUTO.
CHAR can also be set in:
- the options parameter of an OmniAccess API function
- in the WITH clause of a SQL statement
- in a SQL SET statement
If the CHAR option is passed to oaexecsql in the options parameter, it
is passed to the underlying OmniAccess function. For example:
oaexecsql (cursor, "CHAR=AUTO", status, "SELECT
* FROM ORDERS WHERE STATUS='BACK'")
In this example, the CHAR=AUTO option is passed to oaselect where the
select statement will actually be processed.
The CHAR option automatically converts between alphanumeric and numeric
data, thus eliminating any concern for byte-ordering and integer conversion
across hardware platforms.
For example, when a client application on a PC requests numeric data
using the CHAR, OmniAccess automatically converts the data from its numeric
format to character data.
Conversely, when a client application sends information to a server,
the character representation of the number is converted to a numeric type
and byte order appropriate for the server operating system.
When using the CHAR option, the buffer must reflect the length of the
ASCII character representation, not its binary storage format, and should
be padded with blanks up to length n.
The CHAR option supports ASCII representations of numeric values that
contain a leading + or -. It also supports exponential values, like 6.02e23,
for numeric columns defined as TYPE FLOAT.
 Character
representations of floating point data may lose precision.
Example
CHAR can be passed in a SQL SET statement, in the options parameter of
an OAAPI function, or in a WITH options clause in a SQL statement.
ODXSQL
>connect orders.env
>SET CHAR 32
or
>SELECT * FROM ORDERS WHERE STATUS='BACK' WITH CHAR=32
oaexecsql
oaexecsql (cursor, ";", status, "SET CHAR AUTO")
or
oaexecsql (cursor, "CHAR AUTO", status, "SELECT
* FROM ORDERS WHERE STATUS='BACK'")
or
oaexecsql (cursor, ";", status, "SELECT * FROM
ORDERS WHERE STATUS='BACK' WITH CHAR=AUTO")
JDBC
Statement stmt = connection.createStatement();
String sql = "SET CHAR AUTO";
stmt.execute(sql);
or
Statement stmt = connection.createStatement();
String sql = "SELECT * FROM ORDERS WHERE STATUS='BACK' WITH CHAR=AUTO";
ResultSet rs = stmt.executeQuery(sql);
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