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- 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$FUNCTIONS.
26 lines
846 B
Plaintext
26 lines
846 B
Plaintext
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Alternate String Quoting
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Support for alternate format of strings literals.
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Author:
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Adriano dos Santos Fernandes <adrianosf@uol.com.br>
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Syntax:
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<alternate string literal> ::=
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{ q | Q } <quote> <alternate start char> [ { <char> }... ] <alternate end char> <quote>
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Syntax rules:
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When <alternate start char> is '(', '{', '[' or '<', <alternate end char> is respectively
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')', '}', ']' and '>'. In other cases, <alternate end char> is equal to <alternate start char>.
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Notes:
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Inside the string, i.e., <char> items, single (not escaped) quotes could be used.
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Each quote will be part of the result string.
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Examples:
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select q'{abc{def}ghi}' from rdb$database; -- result: abc{def}ghi
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select q'!That's a string!' from rdb$database; -- result: That's a string
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