diff options
| -rw-r--r-- | doc/src/sgml/plpgsql.sgml | 18 | ||||
| -rw-r--r-- | src/pl/plpgsql/src/gram.y | 30 |
2 files changed, 18 insertions, 30 deletions
diff --git a/doc/src/sgml/plpgsql.sgml b/doc/src/sgml/plpgsql.sgml index bd6f0254c3a..3ea1ac19b2d 100644 --- a/doc/src/sgml/plpgsql.sgml +++ b/doc/src/sgml/plpgsql.sgml @@ -1,5 +1,5 @@ <!-- -$PostgreSQL: pgsql/doc/src/sgml/plpgsql.sgml,v 1.63 2005/04/05 06:22:14 tgl Exp $ +$PostgreSQL: pgsql/doc/src/sgml/plpgsql.sgml,v 1.64 2005/04/05 18:05:45 tgl Exp $ --> <chapter id="plpgsql"> @@ -2179,19 +2179,21 @@ DECLARE </para> <sect3> - <title><command>OPEN FOR SELECT</command></title> + <title><command>OPEN FOR</command> <replaceable>query</replaceable></title> <synopsis> -OPEN <replaceable>unbound_cursor</replaceable> FOR SELECT ...; +OPEN <replaceable>unbound_cursor</replaceable> FOR <replaceable>query</replaceable> ; </synopsis> <para> - The cursor variable is opened and given the specified query to + The cursor variable is opened and given the specified query to execute. The cursor cannot be open already, and it must have been declared as an unbound cursor (that is, as a simple - <type>refcursor</> variable). The <command>SELECT</command> query - is treated in the same way as other <command>SELECT</command> - statements in <application>PL/pgSQL</>: <application>PL/pgSQL</> + <type>refcursor</> variable). The query must be a + <command>SELECT</command>, or something else that returns rows + (such as <command>EXPLAIN</>). The query + is treated in the same way as other SQL commands in + <application>PL/pgSQL</>: <application>PL/pgSQL</> variable names are substituted, and the query plan is cached for possible reuse. </para> @@ -2216,7 +2218,7 @@ OPEN <replaceable>unbound_cursor</replaceable> FOR EXECUTE <replaceable class="c execute. The cursor cannot be open already, and it must have been declared as an unbound cursor (that is, as a simple <type>refcursor</> variable). The query is specified as a string - expression in the same way as in the <command>EXECUTE</command> + expression, in the same way as in the <command>EXECUTE</command> command. As usual, this gives flexibility so the query can vary from one run to the next. </para> diff --git a/src/pl/plpgsql/src/gram.y b/src/pl/plpgsql/src/gram.y index e2b5c7aab14..65b8f5f4093 100644 --- a/src/pl/plpgsql/src/gram.y +++ b/src/pl/plpgsql/src/gram.y @@ -4,7 +4,7 @@ * procedural language * * IDENTIFICATION - * $PostgreSQL: pgsql/src/pl/plpgsql/src/gram.y,v 1.67 2005/04/05 06:22:16 tgl Exp $ + * $PostgreSQL: pgsql/src/pl/plpgsql/src/gram.y,v 1.68 2005/04/05 18:05:46 tgl Exp $ * * This software is copyrighted by Jan Wieck - Hamburg. * @@ -1276,7 +1276,6 @@ stmt_open : K_OPEN lno cursor_varptr if ($3->cursor_explicit_expr == NULL) { tok = yylex(); - if (tok != K_FOR) { plpgsql_error_lineno = $2; @@ -1288,26 +1287,15 @@ stmt_open : K_OPEN lno cursor_varptr } tok = yylex(); - switch (tok) + if (tok == K_EXECUTE) { - case K_SELECT: - case '(': - plpgsql_push_back_token(tok); - new->query = read_sql_stmt(""); - break; - - case K_EXECUTE: - new->dynquery = read_sql_stmt("SELECT "); - break; - - default: - plpgsql_error_lineno = $2; - ereport(ERROR, - (errcode(ERRCODE_SYNTAX_ERROR), - errmsg("syntax error at \"%s\"", - yytext))); + new->dynquery = read_sql_stmt("SELECT "); + } + else + { + plpgsql_push_back_token(tok); + new->query = read_sql_stmt(""); } - } else { @@ -1316,7 +1304,6 @@ stmt_open : K_OPEN lno cursor_varptr char *cp; tok = yylex(); - if (tok != '(') { plpgsql_error_lineno = plpgsql_scanner_lineno(); @@ -1369,7 +1356,6 @@ stmt_open : K_OPEN lno cursor_varptr else { tok = yylex(); - if (tok == '(') { plpgsql_error_lineno = plpgsql_scanner_lineno(); |