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Creates the SubLink structure, and the Query->hasSubLink field,
with supporting code. Creates SubLink node in gram.y. psql.c patch for newatttypmod field.
This commit is contained in:
Bruce Momjian
parent
c65ea0e040
commit
b37bc65f44
@ -7,7 +7,7 @@
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*
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/backend/nodes/copyfuncs.c,v 1.31 1998/01/16 23:19:56 momjian Exp $
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* $Header: /cvsroot/pgsql/src/backend/nodes/copyfuncs.c,v 1.32 1998/01/17 04:53:07 momjian Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -892,6 +892,28 @@ _copyAggreg(Aggreg *from)
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return newnode;
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}
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/* ----------------
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* _copySubLink
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* ----------------
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*/
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static SubLink *
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_copySubLink(SubLink *from)
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{
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SubLink *newnode = makeNode(SubLink);
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/* ----------------
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* copy remainder of node
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* ----------------
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*/
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newnode->subLinkType = from->subLinkType;
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newnode->useor = from->useor;
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Node_Copy(from, newnode, lefthand);
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Node_Copy(from, newnode, oper);
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Node_Copy(from, newnode, subselect);
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return newnode;
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}
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static Array *
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_copyArray(Array *from)
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{
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@ -1517,6 +1539,7 @@ _copyQuery(Query *from)
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Node_Copy(from, newnode, havingQual);
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newnode->hasAggs = from->hasAggs;
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newnode->hasSubLinks = from->hasSubLinks;
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if (from->unionClause)
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{
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@ -1673,6 +1696,9 @@ copyObject(void *from)
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case T_Aggreg:
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retval = _copyAggreg(from);
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break;
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case T_SubLink:
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retval = _copySubLink(from);
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break;
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/*
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* RELATION NODES
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@ -7,7 +7,7 @@
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*
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/backend/nodes/outfuncs.c,v 1.22 1998/01/16 23:19:59 momjian Exp $
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* $Header: /cvsroot/pgsql/src/backend/nodes/outfuncs.c,v 1.23 1998/01/17 04:53:09 momjian Exp $
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*
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* NOTES
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* Every (plan) node in POSTGRES has an associated "out" routine which
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@ -230,6 +230,8 @@ _outQuery(StringInfo str, Query *node)
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_outNode(str, node->havingQual);
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appendStringInfo(str, " :hasAggs ");
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appendStringInfo(str, (node->hasAggs ? "true" : "false"));
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appendStringInfo(str, " :hasSubLinks ");
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appendStringInfo(str, (node->hasSubLinks ? "true" : "false"));
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appendStringInfo(str, " :unionClause ");
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_outNode(str, node->unionClause);
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}
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@ -753,6 +755,27 @@ _outAggreg(StringInfo str, Aggreg *node)
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appendStringInfo(str, node->usenulls ? "true" : "false");
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}
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/*
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* SubLink
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*/
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static void
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_outSubLink(StringInfo str, SubLink *node)
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{
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char buf[500];
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appendStringInfo(str, "SUBLINK");
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sprintf(buf, " :subLinkType %d ", node->subLinkType);
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appendStringInfo(str, buf);
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appendStringInfo(str, " :useor ");
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appendStringInfo(str, node->useor ? "true" : "false");
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appendStringInfo(str, " :lefthand ");
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_outNode(str, node->lefthand);
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appendStringInfo(str, " :oper ");
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_outNode(str, node->oper);
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appendStringInfo(str, " :subselect ");
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_outNode(str, node->subselect);
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}
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/*
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* Array is a subclass of Expr
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*/
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@ -1648,6 +1671,9 @@ _outNode(StringInfo str, void *obj)
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case T_Aggreg:
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_outAggreg(str, obj);
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break;
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case T_SubLink:
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_outSubLink(str, obj);
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break;
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case T_Array:
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_outArray(str, obj);
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break;
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@ -7,7 +7,7 @@
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*
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/backend/nodes/readfuncs.c,v 1.18 1998/01/15 18:59:31 momjian Exp $
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* $Header: /cvsroot/pgsql/src/backend/nodes/readfuncs.c,v 1.19 1998/01/17 04:53:11 momjian Exp $
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*
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* NOTES
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* Most of the read functions for plan nodes are tested. (In fact, they
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@ -156,6 +156,10 @@ _readQuery()
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token = lsptok(NULL, &length); /* get hasAggs */
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local_node->hasAggs = (token[0] == 't') ? true : false;
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token = lsptok(NULL, &length); /* skip the :hasSubLinks */
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token = lsptok(NULL, &length); /* get hasSubLinks */
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local_node->hasSubLinks = (token[0] == 't') ? true : false;
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token = lsptok(NULL, &length); /* skip :unionClause */
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local_node->unionClause = nodeRead(true);
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@ -1151,6 +1155,41 @@ _readAggreg()
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return (local_node);
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}
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/* ----------------
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* _readSubLink
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*
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* SubLink is a subclass of Node
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* ----------------
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*/
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static SubLink *
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_readSubLink()
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{
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SubLink *local_node;
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char *token;
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int length;
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local_node = makeNode(SubLink);
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token = lsptok(NULL, &length); /* eat :subLinkType */
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token = lsptok(NULL, &length); /* get subLinkType */
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local_node->subLinkType = atoi(token);
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token = lsptok(NULL, &length); /* eat :useor */
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token = lsptok(NULL, &length); /* get useor */
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local_node->useor = (token[0] == 't') ? true : false;
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token = lsptok(NULL, &length); /* eat :lefthand */
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local_node->lefthand = nodeRead(true); /* now read it */
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token = lsptok(NULL, &length); /* eat :oper */
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local_node->oper = nodeRead(true); /* now read it */
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token = lsptok(NULL, &length); /* eat :subselect */
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local_node->subselect = nodeRead(true); /* now read it */
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return (local_node);
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}
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/*
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* Stuff from execnodes.h
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*/
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@ -1971,6 +2010,10 @@ parsePlanString(void)
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{
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return_value = _readAggreg();
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}
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else if (!strncmp(token, "SUBLINK", 6))
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{
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return_value = _readSubLink();
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}
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else if (!strncmp(token, "AGG", 3))
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{
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return_value = _readAgg();
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@ -10,7 +10,7 @@
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*
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 1.91 1998/01/16 23:20:14 momjian Exp $
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* $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 1.92 1998/01/17 04:53:16 momjian Exp $
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*
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* HISTORY
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* AUTHOR DATE MAJOR EVENT
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@ -63,7 +63,6 @@ extern List *parsetree;
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static char *xlateSqlType(char *);
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static Node *makeA_Expr(int oper, char *opname, Node *lexpr, Node *rexpr);
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static Node *makeRowExpr(char *opr, List *largs, List *rargs);
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void mapTargetColumns(List *source, List *target);
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static List *makeConstantList( A_Const *node);
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static char *FlattenStringList(List *list);
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@ -2151,9 +2150,9 @@ insert_rest: VALUES '(' res_target_list2 ')'
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$$->unique = NULL;
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$$->targetList = $3;
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$$->fromClause = NIL;
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$$->whereClause = NIL;
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$$->whereClause = NULL;
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$$->groupClause = NIL;
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$$->havingClause = NIL;
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$$->havingClause = NULL;
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$$->unionClause = NIL;
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}
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| SELECT opt_unique res_target_list2
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@ -2869,28 +2868,41 @@ a_expr_or_null: a_expr
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*/
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row_expr: '(' row_descriptor ')' IN '(' SubSelect ')'
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{
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$$ = NULL;
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SubLink *n = makeNode(SubLink);
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n->lefthand = $2;
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n->subLinkType = IN_SUBLINK;
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n->subselect = $6;
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$$ = (Node *)n;
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}
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| '(' row_descriptor ')' NOT IN '(' SubSelect ')'
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{
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$$ = NULL;
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SubLink *n = makeNode(SubLink);
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n->lefthand = $2;
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n->subLinkType = NOTIN_SUBLINK;
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n->subselect = $7;
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$$ = (Node *)n;
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}
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| '(' row_descriptor ')' '=' '(' row_descriptor ')'
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/* We accept all Operators? */
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| '(' row_descriptor ')' Op '(' SubSelect ')'
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{
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$$ = makeRowExpr("=", $2, $6);
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}
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| '(' row_descriptor ')' '<' '(' row_descriptor ')'
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{
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$$ = makeRowExpr("<", $2, $6);
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}
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| '(' row_descriptor ')' '>' '(' row_descriptor ')'
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{
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$$ = makeRowExpr("<", $2, $6);
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SubLink *n = makeNode(SubLink);
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n->lefthand = $2;
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n->subLinkType = OPER_SUBLINK;
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n->oper = lcons($4, NIL);
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n->subselect = $6;
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$$ = (Node *)n;
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}
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/* Do we need this?
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| '(' row_descriptor ')' Op '(' row_descriptor ')'
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{
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$$ = makeRowExpr($4, $2, $6);
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SubLink *n = makeNode(SubLink);
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n->lefthand = $2;
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n->subLinkType = OPER_SUBLINK;
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n->oper = lcons($4, NIL);
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n->subselect = $6;
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$$ = (Node *)n;
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}
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*/
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;
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row_descriptor: row_list ',' a_expr
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@ -3116,8 +3128,12 @@ a_expr: attr opt_indirection
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*/
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| EXISTS '(' SubSelect ')'
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{
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elog(ERROR,"EXISTS not yet implemented");
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$$ = $3;
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SubLink *n = makeNode(SubLink);
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n->lefthand = NIL;
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n->subLinkType = EXISTS_SUBLINK;
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n->oper = NIL;
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n->subselect = $3;
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$$ = (Node *)n;
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}
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| EXTRACT '(' extract_list ')'
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{
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@ -3231,9 +3247,25 @@ a_expr: attr opt_indirection
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makeA_Expr(OP, ">", $1, $6));
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}
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| a_expr IN { saved_In_Expr = $1; } '(' in_expr ')'
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{ $$ = $5; }
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{
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if (nodeTag($5) == T_SubLink)
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{
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((SubLink *)$5)->lefthand = lcons($1, NIL);
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((SubLink *)$5)->subLinkType = IN_SUBLINK;
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$$ = (Node *)$5;
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}
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else $$ = $5;
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}
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| a_expr NOT IN { saved_In_Expr = $1; } '(' not_in_expr ')'
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{ $$ = $6; }
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{
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if (nodeTag($6) == T_SubLink)
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{
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((SubLink *)$6)->lefthand = lcons($1, NIL);
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((SubLink *)$6)->subLinkType = NOTIN_SUBLINK;
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$$ = (Node *)$6;
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}
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else $$ = $6;
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}
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| a_expr AND a_expr
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{ $$ = makeA_Expr(AND, NULL, $1, $3); }
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| a_expr OR a_expr
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@ -3446,8 +3478,9 @@ trim_list: a_expr FROM expr_list
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in_expr: SubSelect
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{
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elog(ERROR,"IN (SUBSELECT) not yet implemented");
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$$ = $1;
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SubLink *n = makeNode(SubLink);
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n->subselect = $1;
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$$ = (Node *)n;
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}
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| in_expr_nodes
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{ $$ = $1; }
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@ -3463,8 +3496,9 @@ in_expr_nodes: AexprConst
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not_in_expr: SubSelect
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{
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elog(ERROR,"NOT IN (SUBSELECT) not yet implemented");
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$$ = $1;
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SubLink *n = makeNode(SubLink);
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n->subselect = $1;
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$$ = (Node *)n;
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}
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| not_in_expr_nodes
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{ $$ = $1; }
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@ -3807,68 +3841,6 @@ makeA_Expr(int oper, char *opname, Node *lexpr, Node *rexpr)
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return (Node *)a;
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}
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/* makeRowExpr()
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* Generate separate operator nodes for a single row descriptor expression.
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* Perhaps this should go deeper in the parser someday... - thomas 1997-12-22
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*/
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static Node *
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makeRowExpr(char *opr, List *largs, List *rargs)
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{
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Node *expr = NULL;
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Node *larg, *rarg;
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if (length(largs) != length(rargs))
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elog(ERROR,"Unequal number of entries in row expression");
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if (lnext(largs) != NIL)
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expr = makeRowExpr(opr,lnext(largs),lnext(rargs));
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larg = lfirst(largs);
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rarg = lfirst(rargs);
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if ((strcmp(opr, "=") == 0)
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|| (strcmp(opr, "<") == 0)
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|| (strcmp(opr, "<=") == 0)
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|| (strcmp(opr, ">") == 0)
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|| (strcmp(opr, ">=") == 0))
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{
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if (expr == NULL)
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expr = makeA_Expr(OP, opr, larg, rarg);
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else
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expr = makeA_Expr(AND, NULL, expr, makeA_Expr(OP, opr, larg, rarg));
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}
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else if (strcmp(opr, "<>") == 0)
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{
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if (expr == NULL)
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expr = makeA_Expr(OP, opr, larg, rarg);
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else
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expr = makeA_Expr(OR, NULL, expr, makeA_Expr(OP, opr, larg, rarg));
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}
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else
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{
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elog(ERROR,"Operator '%s' not implemented for row expressions",opr);
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}
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#if FALSE
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while ((largs != NIL) && (rargs != NIL))
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{
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larg = lfirst(largs);
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rarg = lfirst(rargs);
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if (expr == NULL)
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expr = makeA_Expr(OP, opr, larg, rarg);
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else
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expr = makeA_Expr(AND, NULL, expr, makeA_Expr(OP, opr, larg, rarg));
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largs = lnext(largs);
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rargs = lnext(rargs);
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}
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pprint(expr);
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#endif
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return expr;
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} /* makeRowExpr() */
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void
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mapTargetColumns(List *src, List *dst)
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{
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@ -7,7 +7,7 @@
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*
|
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*
|
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* IDENTIFICATION
|
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* $Header: /cvsroot/pgsql/src/backend/parser/parse_node.c,v 1.6 1998/01/15 19:00:04 momjian Exp $
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* $Header: /cvsroot/pgsql/src/backend/parser/parse_node.c,v 1.7 1998/01/17 04:53:19 momjian Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -47,16 +47,9 @@ make_parsestate(void)
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ParseState *pstate;
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pstate = palloc(sizeof(ParseState));
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MemSet(pstate, 0, sizeof(ParseState));
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pstate->p_last_resno = 1;
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pstate->p_rtable = NIL;
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pstate->p_hasAggs = false;
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pstate->p_is_insert = false;
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pstate->p_insert_columns = NIL;
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pstate->p_is_update = false;
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pstate->p_is_rule = false;
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pstate->p_in_where_clause = false;
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pstate->p_target_relation = NULL;
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pstate->p_target_rangetblentry = NULL;
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return (pstate);
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}
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@ -7,7 +7,7 @@
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*
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*
|
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* IDENTIFICATION
|
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* $Header: /cvsroot/pgsql/src/bin/psql/Attic/psql.c,v 1.125 1998/01/09 19:34:38 momjian Exp $
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* $Header: /cvsroot/pgsql/src/bin/psql/Attic/psql.c,v 1.126 1998/01/17 04:53:32 momjian Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -562,7 +562,7 @@ tableDesc(PsqlSettings *pset, char *table, FILE *fout)
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char *rnotnull;
|
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char *rhasdef;
|
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int i;
|
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int rsize;
|
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int attlen, atttypmod;
|
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PGresult *res, *res2;
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int usePipe = 0;
|
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char *pagerenv;
|
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@ -598,7 +598,8 @@ tableDesc(PsqlSettings *pset, char *table, FILE *fout)
|
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}
|
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descbuf[0] = '\0';
|
||||
strcat(descbuf, "SELECT a.attnum, a.attname, t.typname, a.attlen, a.attnotnull, a.atthasdef ");
|
||||
strcat(descbuf, "SELECT a.attnum, a.attname, t.typname, a.attlen, ");
|
||||
strcat(descbuf, "a.atttypmod, a.attnotnull, a.atthasdef ");
|
||||
strcat(descbuf, "FROM pg_class c, pg_attribute a, pg_type t ");
|
||||
strcat(descbuf, "WHERE c.relname = '");
|
||||
strcat(descbuf, table);
|
||||
@ -643,9 +644,10 @@ tableDesc(PsqlSettings *pset, char *table, FILE *fout)
|
||||
|
||||
fprintf(fout,"| %-32.32s | ", PQgetvalue(res, i, 1));
|
||||
rtype = PQgetvalue(res, i, 2);
|
||||
rsize = atoi(PQgetvalue(res, i, 3));
|
||||
rnotnull = PQgetvalue(res, i, 4);
|
||||
rhasdef = PQgetvalue(res, i, 5);
|
||||
attlen = atoi(PQgetvalue(res, i, 3));
|
||||
atttypmod = atoi(PQgetvalue(res, i, 4));
|
||||
rnotnull = PQgetvalue(res, i, 5);
|
||||
rhasdef = PQgetvalue(res, i, 6);
|
||||
|
||||
strcpy(type_str, rtype);
|
||||
if (strcmp(rtype, "bpchar") == 0)
|
||||
@ -687,11 +689,11 @@ tableDesc(PsqlSettings *pset, char *table, FILE *fout)
|
||||
fprintf(fout,"%6s |", "var");
|
||||
else if (strcmp(rtype, "bpchar") == 0 ||
|
||||
strcmp(rtype, "varchar") == 0)
|
||||
fprintf(fout,"%6i |", rsize > 0 ? rsize - VARHDRSZ : 0);
|
||||
fprintf(fout,"%6i |", atttypmod > 0 ? atttypmod - VARHDRSZ : 0);
|
||||
else
|
||||
{
|
||||
if (rsize > 0)
|
||||
fprintf(fout,"%6i |", rsize);
|
||||
if (attlen > 0)
|
||||
fprintf(fout,"%6i |", attlen);
|
||||
else
|
||||
fprintf(fout,"%6s |", "var");
|
||||
}
|
||||
|
||||
@ -6,7 +6,7 @@
|
||||
*
|
||||
* Copyright (c) 1994, Regents of the University of California
|
||||
*
|
||||
* $Id: nodes.h,v 1.22 1998/01/10 04:30:08 momjian Exp $
|
||||
* $Id: nodes.h,v 1.23 1998/01/17 04:53:38 momjian Exp $
|
||||
*
|
||||
*-------------------------------------------------------------------------
|
||||
*/
|
||||
@ -60,6 +60,7 @@ typedef enum NodeTag
|
||||
T_Const,
|
||||
T_Param,
|
||||
T_Aggreg,
|
||||
T_SubLink,
|
||||
T_Func,
|
||||
T_Array,
|
||||
T_ArrayRef,
|
||||
|
||||
@ -6,7 +6,7 @@
|
||||
*
|
||||
* Copyright (c) 1994, Regents of the University of California
|
||||
*
|
||||
* $Id: parsenodes.h,v 1.45 1998/01/16 23:20:55 momjian Exp $
|
||||
* $Id: parsenodes.h,v 1.46 1998/01/17 04:53:40 momjian Exp $
|
||||
*
|
||||
*-------------------------------------------------------------------------
|
||||
*/
|
||||
@ -45,6 +45,7 @@ typedef struct Query
|
||||
bool isBinary; /* binary portal? */
|
||||
bool unionall; /* union without unique sort */
|
||||
bool hasAggs; /* has aggregates in target list */
|
||||
bool hasSubLinks; /* has subquery SubLink */
|
||||
|
||||
char *uniqueFlag; /* NULL, '*', or Unique attribute name */
|
||||
List *sortClause; /* a list of SortClause's */
|
||||
|
||||
@ -6,7 +6,7 @@
|
||||
*
|
||||
* Copyright (c) 1994, Regents of the University of California
|
||||
*
|
||||
* $Id: primnodes.h,v 1.12 1998/01/04 04:31:37 momjian Exp $
|
||||
* $Id: primnodes.h,v 1.13 1998/01/17 04:53:42 momjian Exp $
|
||||
*
|
||||
*-------------------------------------------------------------------------
|
||||
*/
|
||||
@ -270,6 +270,33 @@ typedef struct Aggreg
|
||||
bool usenulls;
|
||||
} Aggreg;
|
||||
|
||||
/* ----------------
|
||||
* SubLink
|
||||
* subLinkType - EXISTS, ALL, ANY, EXPR
|
||||
* useor - TRUE for <>
|
||||
* lefthand - list of Var/Const nodes on the left
|
||||
* oper - list of Oper nodes
|
||||
* subselect - subselect as Query* or parsetree
|
||||
* ----------------
|
||||
*/
|
||||
typedef enum SubLinkType
|
||||
{
|
||||
EXISTS_SUBLINK, ALL_SUBLINK, ANY_SUBLINK, EXPR_SUBLINK,
|
||||
IN_SUBLINK, NOTIN_SUBLINK, OPER_SUBLINK
|
||||
} SubLinkType;
|
||||
|
||||
|
||||
typedef struct SubLink
|
||||
{
|
||||
struct Query;
|
||||
NodeTag type;
|
||||
SubLinkType subLinkType;
|
||||
bool useor;
|
||||
List *lefthand;
|
||||
List *oper;
|
||||
Node *subselect;
|
||||
} SubLink;
|
||||
|
||||
/* ----------------
|
||||
* Array
|
||||
* arrayelemtype - base type of the array's elements (homogenous!)
|
||||
|
||||
@ -5,7 +5,7 @@
|
||||
*
|
||||
* Copyright (c) 1994, Regents of the University of California
|
||||
*
|
||||
* $Id: parse_node.h,v 1.4 1998/01/15 19:00:16 momjian Exp $
|
||||
* $Id: parse_node.h,v 1.5 1998/01/17 04:53:46 momjian Exp $
|
||||
*
|
||||
*-------------------------------------------------------------------------
|
||||
*/
|
||||
@ -32,6 +32,7 @@ typedef struct ParseState
|
||||
List *p_rtable;
|
||||
List *p_insert_columns;
|
||||
bool p_hasAggs;
|
||||
bool p_hasSubLinks;
|
||||
bool p_is_insert;
|
||||
bool p_is_update;
|
||||
bool p_is_rule;
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user