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Postgres FD Implementation
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Abuhujair Javed
Postgres FD Implementation
Commits
793bcc67
"...postgres-fd-implementation.git" did not exist on "64b53d74521b249b8dd96221da415b7e8089e391"
Commit
793bcc67
authored
23 years ago
by
Tom Lane
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Remove mistakenly-included file, per request from John Gray.
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e3831d83
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contrib/xml/xpath-yacc
contrib/xml/xpath-yacc
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contrib/xml/xpath-yacc
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e3831d83
%token QNAME
%token NAME_COLON_STAR
%token DOT
%token DOT_DOT
%token AT
%token AXIS_NAME
%token FUNCTION_NAME
%token COMMENT
%token PI
%token TEXT
%token NODE
%token STAR
%token LPAR
%token RPAR
%token LSQB
%token RSQB
%token LITERAL
%token NUMBER
%token COLON_COLON
%token DOLLAR_QNAME
%token SLASH
%token SLASH_SLASH
%token VBAR
%token COMMA
%token PLUS
%token MINUS
%token EQUALS
%token GT
%token LT
%token GTE
%token LTE
%token MULTIPLY
%token AND
%token OR
%token MOD
%token DIV
%token QUO
%%
expr :
or_expr
;
or_expr :
and_expr
| or_expr OR and_expr
;
and_expr :
equality_expr
| and_expr AND equality_expr
;
equality_expr :
relational_expr
| equality_expr EQUALS relational_expr
;
relational_expr :
additive_expr
| relational_expr LT additive_expr
| relational_expr GT additive_expr
| relational_expr LTE additive_expr
| relational_expr GTE additive_expr
;
additive_expr :
multiplicative_expr
| additive_expr PLUS multiplicative_expr
| additive_expr MINUS multiplicative_expr
;
multiplicative_expr :
unary_expr
| multiplicative_expr MULTIPLY unary_expr
| multiplicative_expr DIV unary_expr
| multiplicative_expr MOD unary_expr
;
unary_expr :
union_expr
| '-' unary_expr
;
union_expr :
path_expr
| union_expr VBAR path_expr
;
path_expr :
location_path
| primary_expr predicates segment
;
segment :
/* empty */
| SLASH relative_location_path
| SLASH_SLASH relative_location_path
;
location_path :
relative_location_path
| absolute_location_path
;
absolute_location_path :
SLASH
| SLASH relative_location_path
| SLASH_SLASH relative_location_path
;
relative_location_path :
step
| relative_location_path SLASH step
| relative_location_path SLASH_SLASH step
;
step :
axis node_test predicates
| DOT
| DOT_DOT
;
axis:
/* empty */
| AXIS_NAME COLON_COLON
| AT
;
predicates :
/* empty */
| predicates LSQB expr RSQB
;
primary_expr :
DOLLAR_QNAME
| LPAR expr RPAR
| LITERAL
| NUMBER
| function_call
;
function_call :
FUNCTION_NAME LPAR opt_args RPAR
;
opt_args :
/* empty */
| args
;
args :
expr
| args COMMA expr
;
node_test :
QNAME
| STAR
| NAME_COLON_STAR
| PI LPAR opt_literal RPAR
| COMMENT LPAR RPAR
| TEXT LPAR RPAR
| NODE LPAR RPAR
;
opt_literal :
/* empty */
| LITERAL
;
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