Convert CONCATENATE and aggregate functions to it.
Fix some bugs:
- select sum(n) over (order by n2), sum(n) over (), n, n2 from x1;
- select (select 1 from x1 b where list(1, a.n) = 1) from x1 a;
- Plugins API.
- Feature CORE-2700 - UDR (User Defined Routines) Engine - C++ API supporting functions, triggers and stored procedures.
- Feature CORE-2470 - Support for alternate format of strings literals.
- Feature CORE-2310 - DDL triggers.
- Feature CORE-2312 - PSQL Packages.
- Feature CORE-1209 - CONTINUE statement.
- Feature CORE-1180 - DDL syntax to change (not) nullable state of columns.
- Feature CORE-2090 - Support OVER () clause with current aggregate functions.
- Fixed CORE-2699 - Common table expression context could be used with parameters.
- Introduce ODS 12.0.
- Work in progress in type-safe parser.
- Refactor some DDL commands (procedures and triggers) from DYN to DdlNodes.
- Refactor virtual tables to use a class hierarchy instead of namespaces. This is basic thing, not based on the changes done in Vulcan. Window functions is based on this work.
- Refactor COMMENT ON and DROP FUNCTION from DYN to DdlNodes. COMMENT ON do not use GDML anymore, it uses DSQL with PreparedStatement class.
- Refactor EXECUTE BLOCK to StmtNodes.
- Refactor the IUDF to SysFunctions. That eliminates RDB$GET_CONTEXT and RDB$SET_CONTEXT from RDB$FUNCTIONS.
CORE-501 - Optimization problem with COALESCE
CORE-1343 - Bug with a simple case and a subquery
CORE-2041 - update or insert with gen_id() with wrong generator value
And should fix this one (snapshot build bug):
CORE-2051 - don't work subquery in COALESCE
2) Creation of StmtNode
3) Conversion of IN AUTONOMOUS TRANSACTION to InAutonomousTransactionNode (inherited from StmtNode) - it makes this feature almost self-contained
Please do a boot build or at least run blr_table.
Tenth step: some code was tagged PC_ENGINE but was for SCROLLABLE_CURSORS instead, hence restore it. Also, clean unused data members, obsolete BLR verbs and the like.
