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ABENOPENSQL_STRICT_MODES - OPENSQL STRICT MODES

ABENOPENSQL_STRICT_MODES - OPENSQL STRICT MODES

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- Release-Dependent Syntax Check Modes

In Release 7.40, SP02, a new SQL parser for was introduced, used for both statically specified statements and for dynamic tokens, and which applies some rules more strictly than the previous parser. In Release 7.40, SP02, the new parser was used only for the statement SELECT and, from Release 7.40, SP05, for all statements. The corresponding syntax revisions can be found under the release-dependent changes for 7.40 SP02 and 7.40 SP05.

Alongside these general revisions (which apply to all statements), Release 7.40, SP05 also introduced syntax check modes known as strict modes, which check statements even more strictly if they use attributes introduced in the release in question.

  • Strict Mode in Release
  • Strict Mode in Release
  • Strict Mode in Release
  • Strict Mode in Release
  • Strict Mode in Release
  • Strict Mode in Release

Notes

  • The release-dependent strict modes are generally downward compatible, since they are applied only if an attribute is used that was not present in previous releases.
  • The strict modes in later releases contain the rules from all preceding releases. More specifically, all strict modes demand, from Release 7.40, SP05, programs in which the program attribute fixed point arithmetic is activated.
  • The following reasons apply for release-dependent strict modes of the syntax check:
  • First, rules such as the use of comma-separated lists or the introduction of host variables with @ are a precondition for using new syntax constructs that cannot be parsed otherwise.

  • Furthermore, developers should be encouraged to always use the desired syntax. For these reasons, an statement that is enhanced with a new feature must adhere to the corresponding strict rule, even if the new feature used is not dependent upon it.






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