diff options
Diffstat (limited to 'src/backend/parser')
| -rw-r--r-- | src/backend/parser/analyze.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/src/backend/parser/analyze.c b/src/backend/parser/analyze.c index e892df98194..70932dba617 100644 --- a/src/backend/parser/analyze.c +++ b/src/backend/parser/analyze.c @@ -27,6 +27,7 @@ #include "access/sysattr.h" #include "catalog/pg_proc.h" #include "catalog/pg_type.h" +#include "commands/defrem.h" #include "miscadmin.h" #include "nodes/makefuncs.h" #include "nodes/nodeFuncs.h" @@ -2906,10 +2907,38 @@ static Query * transformExplainStmt(ParseState *pstate, ExplainStmt *stmt) { Query *result; + bool generic_plan = false; + Oid *paramTypes = NULL; + int numParams = 0; + + /* + * If we have no external source of parameter definitions, and the + * GENERIC_PLAN option is specified, then accept variable parameter + * definitions (similarly to PREPARE, for example). + */ + if (pstate->p_paramref_hook == NULL) + { + ListCell *lc; + + foreach(lc, stmt->options) + { + DefElem *opt = (DefElem *) lfirst(lc); + + if (strcmp(opt->defname, "generic_plan") == 0) + generic_plan = defGetBoolean(opt); + /* don't "break", as we want the last value */ + } + if (generic_plan) + setup_parse_variable_parameters(pstate, ¶mTypes, &numParams); + } /* transform contained query, allowing SELECT INTO */ stmt->query = (Node *) transformOptionalSelectInto(pstate, stmt->query); + /* make sure all is well with parameter types */ + if (generic_plan) + check_variable_parameters(pstate, (Query *) stmt->query); + /* represent the command as a utility Query */ result = makeNode(Query); result->commandType = CMD_UTILITY; |