Commitae3c075

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Add comment about why BETWEEN uses operator strings and not opclasses,

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Lines changed: 6 additions & 1 deletion

Original file line number	Diff line number	Diff line change
`@@ -11,7 +11,7 @@`
`11`	`11`	`*`
`12`	`12`	`*`
`13`	`13`	`* IDENTIFICATION`
`14`		`- * $PostgreSQL: pgsql/src/backend/parser/gram.y,v 2.651 2009/01/01 17:23:45 momjian Exp $`
	`14`	`+ * $PostgreSQL: pgsql/src/backend/parser/gram.y,v 2.652 2009/01/07 22:54:45 momjian Exp $`
`15`	`15`	`*`
`16`	`16`	`* HISTORY`
`17`	`17`	`* AUTHORDATEMAJOR EVENT`
`@@ -8361,6 +8361,11 @@ a_expr:c_expr{ $$ = $1; }`
`8361`	`8361`	`{`
`8362`	`8362`	`$$ = (Node ) makeSimpleA_Expr(AEXPR_OF,"<>",$1, (Node )$6,@2);`
`8363`	`8363`	`}`
	`8364`	`+/*`
	`8365`	`+ *Ideally we would not use hard-wired operators below but instead use`
	`8366`	`+ *opclasses. However, mixed data types and other issues make this`
	`8367`	`+ *difficult: http://archives.postgresql.org/pgsql-hackers/2008-08/msg01142.php`
	`8368`	`+*/`
`8364`	`8369`	`\| a_expr BETWEEN opt_asymmetric b_expr AND b_expr%prec BETWEEN`
`8365`	`8370`	`{`
`8366`	`8371`	`$$ = (Node *) makeA_Expr(AEXPR_AND, NIL,`

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