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Refactor CREATE/ALTER DATABASE syntax so options need not be keywords.

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Most of the existing option names are keywords anyway, but we can get rid
of LC_COLLATE and LC_CTYPE as keywords known to the lexer/grammar.  This
immediately reduces the size of the grammar tables by about 8KB, and will
save more when we add additional CREATE/ALTER DATABASE options in future.

A side effect of the implementation is that the CONNECTION LIMIT option
can now also be spelled CONNECTION_LIMIT.  We choose not to document this,
however.

Vik Fearing, based on a suggestion by me; reviewed by Pavel Stehule
This commit is contained in:
Tom Lane
2014-07-01 19:02:21 -04:00
parent 2e8ce9ae46
commit 15c82efd69
3 changed files with 76 additions and 103 deletions
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src/include/parser/kwlist.h
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@@ -215,8 +215,6 @@ PG_KEYWORD("language", LANGUAGE, UNRESERVED_KEYWORD)
PG_KEYWORD("large", LARGE_P, UNRESERVED_KEYWORD)
PG_KEYWORD("last", LAST_P, UNRESERVED_KEYWORD)
PG_KEYWORD("lateral", LATERAL_P, RESERVED_KEYWORD)
PG_KEYWORD("lc_collate", LC_COLLATE_P, UNRESERVED_KEYWORD)
PG_KEYWORD("lc_ctype", LC_CTYPE_P, UNRESERVED_KEYWORD)
PG_KEYWORD("leading", LEADING, RESERVED_KEYWORD)
PG_KEYWORD("leakproof", LEAKPROOF, UNRESERVED_KEYWORD)
PG_KEYWORD("least", LEAST, COL_NAME_KEYWORD)