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Extending HCL OneDB™Beyond standard relational database objects, HCL OneDB™ can be extended to handle specialized data types, access methods, routines, and other objects. HCL OneDB™ includes many built-in extensions that are fully integrated in the database server. HCL OneDB™ also provides DataBlade® modules, which are packages of extended database objects for a particular purpose and that are installed separately from the database server. Alternatively, you can create your own user-defined objects for HCL OneDB™.
Creating extensionsYou can create user-defined data types, routines, access methods, and other database objects to suit your needs. You can use application programming interfaces to write user-defined routines and applications that access data in HCL OneDB™ databases.
DataBlade® API Function ReferenceThe HCL OneDB™ DataBlade® API Function Reference describes the DataBlade® API functions and the subset of functions that the DataBlade® API supports.
Function descriptionsThis section gives comprehensive reference information about the functions that are valid within DataBlade® API modules. It lists the function descriptions in alphabetical order, with syntax, usage information, and return values for the functions.
The incvasc() functionThe incvasc() function converts a string that conforms to the ANSI SQL standard for an INTERVAL value to an interval value.

The incvasc() function

The incvasc() function converts a string that conforms to the ANSI SQL standard for an INTERVAL value to an interval value.

Syntax

mint incvasc(inbuf, invvalue)
   char *inbuf;
   intrvl_t *invvalue;

inbuf: A pointer to the buffer that contains the ANSI-standard INTERVAL string to convert.
invvalue: A pointer to an initialized interval variable.

Usage

You must initialize the interval variable in invvalue with the qualifier that you want this variable to have.

The character string in inbuf can have leading and trailing spaces. However, from the first significant digit to the last, inbuf can only contain characters that are digits and delimiters that are appropriate to the qualifier fields of the interval variable.

If the character string is an empty string, the incvasc() function sets the value in invvalue to null. If the character string is acceptable, the function sets the value in the interval variable and returns zero. Otherwise, the function sets the value in the interval value to null.

Return values

0: The conversion was successful.
-1260: It is not possible to convert between the specified types.
-1261: Too many digits in the first field of datetime or interval.
-1262: Non-numeric character in datetime or interval.
-1263: A field in a datetime or interval value is out of range or incorrect.
-1264: Extra characters at the end of a datetime or interval value.
-1265: Overflow occurred on a datetime or interval operation.
-1266: A datetime or interval value is incompatible with the operation.
-1267: The result of a datetime computation is out of range.
-1268: A parameter contains an invalid datetime or interval qualifier.