diff options
Diffstat (limited to 'src/include/nodes/primnodes.h')
| -rw-r--r-- | src/include/nodes/primnodes.h | 21 |
1 files changed, 11 insertions, 10 deletions
diff --git a/src/include/nodes/primnodes.h b/src/include/nodes/primnodes.h index f7f52939940..9eb1514c288 100644 --- a/src/include/nodes/primnodes.h +++ b/src/include/nodes/primnodes.h @@ -10,7 +10,7 @@ * Portions Copyright (c) 1996-2004, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $PostgreSQL: pgsql/src/include/nodes/primnodes.h,v 1.103 2004/08/29 04:13:07 momjian Exp $ + * $PostgreSQL: pgsql/src/include/nodes/primnodes.h,v 1.104 2004/08/29 05:06:57 momjian Exp $ * *------------------------------------------------------------------------- */ @@ -33,14 +33,14 @@ * Notes: * * In a SELECT's targetlist, resno should always be equal to the item's - * ordinal position (counting from 1). However, in an INSERT or UPDATE + * ordinal position (counting from 1). However, in an INSERT or UPDATE * targetlist, resno represents the attribute number of the destination * column for the item; so there may be missing or out-of-order resnos. * It is even legal to have duplicated resnos; consider * UPDATE table SET arraycol[1] = ..., arraycol[2] = ..., ... * The two meanings come together in the executor, because the planner * transforms INSERT/UPDATE tlists into a normalized form with exactly - * one entry for each column of the destination table. Before that's + * one entry for each column of the destination table. Before that's * happened, however, it is risky to assume that resno == position. * Generally get_tle_by_resno() should be used rather than list_nth() * to fetch tlist entries by resno, and only in SELECT should you assume @@ -49,9 +49,9 @@ * resname is required to represent the correct column name in non-resjunk * entries of top-level SELECT targetlists, since it will be used as the * column title sent to the frontend. In most other contexts it is only - * a debugging aid, and may be wrong or even NULL. (In particular, it may + * a debugging aid, and may be wrong or even NULL. (In particular, it may * be wrong in a tlist from a stored rule, if the referenced column has been - * renamed by ALTER TABLE since the rule was made. Also, the planner tends + * renamed by ALTER TABLE since the rule was made. Also, the planner tends * to store NULL rather than look up a valid name for tlist entries in * non-toplevel plan nodes.) In resjunk entries, resname should be either * a specific system-generated name (such as "ctid") or NULL; anything else @@ -100,7 +100,7 @@ typedef struct Resdom * * Note: colnames is a list of Value nodes (always strings). In Alias structs * associated with RTEs, there may be entries corresponding to dropped - * columns; these are normally empty strings (""). See parsenodes.h for info. + * columns; these are normally empty strings (""). See parsenodes.h for info. */ typedef struct Alias { @@ -553,7 +553,7 @@ typedef struct FieldSelect * portion of a column. * * A single FieldStore can actually represent updates of several different - * fields. The parser only generates FieldStores with single-element lists, + * fields. The parser only generates FieldStores with single-element lists, * but the planner will collapse multiple updates of the same base column * into one FieldStore. * ---------------- @@ -601,7 +601,7 @@ typedef struct RelabelType * and the testexpr in the second case. * * In the raw grammar output for the second form, the condition expressions - * of the WHEN clauses are just the comparison values. Parse analysis + * of the WHEN clauses are just the comparison values. Parse analysis * converts these to valid boolean expressions of the form * CaseTestExpr '=' compexpr * where the CaseTestExpr node is a placeholder that emits the correct @@ -669,10 +669,10 @@ typedef struct ArrayExpr * * Note: the list of fields must have a one-for-one correspondence with * physical fields of the associated rowtype, although it is okay for it - * to be shorter than the rowtype. That is, the N'th list element must + * to be shorter than the rowtype. That is, the N'th list element must * match up with the N'th physical field. When the N'th physical field * is a dropped column (attisdropped) then the N'th list element can just - * be a NULL constant. (This case can only occur for named composite types, + * be a NULL constant. (This case can only occur for named composite types, * not RECORD types, since those are built from the RowExpr itself rather * than vice versa.) It is important not to assume that length(args) is * the same as the number of columns logically present in the rowtype. @@ -682,6 +682,7 @@ typedef struct RowExpr Expr xpr; List *args; /* the fields */ Oid row_typeid; /* RECORDOID or a composite type's ID */ + /* * Note: we deliberately do NOT store a typmod. Although a typmod * will be associated with specific RECORD types at runtime, it will |