IBProvider v5.33. ZLib v1.3 and improved support of PSQL/DDL

This release improves the quality of existing code and adds the support of the latest DDL syntax Firebird and InterBase.

ZLib v1.3

We updated the internal compression library (zlib1) with version 1.3 and were testing it with FB3/FB4 within one month.

This library is used in our built-in FB-client (fb.direct mode). See the initialization property remote:wire_compression.

The improvement of SQL parser

New release fixes the problem with parsing PSQL code that contains CASE-expressions.

We also updated SQL-grammar to support latest DDL syntax for procedures, functions, triggers and packages.

These improvements are applying to Firebird and InterBase.

Other changes

• A critical mistake in SQL parser was fixed
• The parser of text tokens was improved
• Problems with error messages were fixed in built-in FB-client
• Lots of improvements were made in C++ code

We recommend to upgrade your IBProvider with this release.