HP NonStop SQL/MP Programming Manual page 311

Converting C Programs
Table D-3. Version 1 SQLDA Structure Fields (page 2 of 2)
Field Name
data_type
data_len
var_ptr
Using a Combination of SQLDA Structures
Version 300 (or later) SQL/MP software does not support different versions of SQLDA
structures in the same compilation unit. If a program requires more than one SQLDA
structure in a compilation unit, convert all SQLDA structures to version 315. However,
to use a combination of SQLDA structures (for example, a version 2 structure and a
version 315 structure), follow these steps:
1. Separate the program into different compilation units so that the version 315
SQLDA structure and the supporting executable statements are in a different
compilation unit than the version 2 (or version 1) SQLDA structure and its
executable statements.
2. Specify an INCLUDE STRUCTURES directive with the appropriate VERSION
clause in each compilation unit.
3. Compile each compilation unit separately.
4. Use the Binder program to combine the object files into a single target object file.
HP NonStop SQL/MP Programming Manual for C—429847-008
Description
Data type of the parameter or output variable. For the table of data type
values, see Section 10, Dynamic SQL
data_len depends on the data type:
Fixed-length character
Variable-length character Maximum number of bytes in the string.
Decimal numeric
Binary numeric
Date-time or INTERVAL Bits 0:7 contain a value specifying the range of
Extended address of the actual data (value of input parameter or
column). NonStop SQL/MP does not return var_ptr; a program must
initialize var_ptr to point to the input and output data buffers.
Generating a Version 1 SQLDA Structure
Operations.
Number of bytes in the string.
Bits 0:7 contain the decimal scale.
Bits 8:15 contain the byte length of the item.
Bits 0:7 contain the decimal scale.
Bits 8:15 contain the byte length of the item
(2, 4, or 8).
date-time fields. For the table of values, see
Section 10, Dynamic SQL
Bits 8:15 contain the storage size of the item.
D-7
Operations.