Allocates and initializes the aggregate intermediate storage area according to the length specified by the length input argument.
An aggregate UDF uses this method in the Phase.AGR_INIT phase of aggregation.
Syntax
initCtx(int length)
Syntax Elements
- length
- Length the function uses to allocate and initialize the aggregate intermediate storage area.
Exceptions
If length is larger than the size specified in the CLASS AGGREGATE clause of the CREATE FUNCTION or REPLACE FUNCTION statement for the UDF, initCtx() throws an SQLException to indicate that aggregate storage allocation failed because requested size is too big. The SQLException fields are set to the following values.
| SQLState Field | vendorCode Field |
|---|---|
| “TS000” | 7843 |