MDEV-34316 sql_mode=ORACLE: Ignore the NOCOPY keyword in stored routine parameters

During sql_mode=ORACLE, ignore the NOCOPY keyword in stored routine
parameters. The optimization (pass-by-reference instead of
pass-by-value) helping to avoid value copying will be done in a separate
task when needed.

mysql-test/main/sp-ignore_nocopy.result

@@ -0,0 +1,103 @@
+# 
+# MDEV-34316 sql_mode=ORACLE: Ignore the NOCOPY keyword in stored routine parameters
+# 
+# 
+# sql_mode=DEFAULT. Test with function, IN NOCOPY
+# 
+CREATE OR REPLACE FUNCTION example_func(IN NOCOPY p_in INT) RETURNS INT
+BEGIN
+RETURN 0;
+END;
+$$
+ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'NOCOPY p_in INT) RETURNS INT
+BEGIN
+RETURN 0;
+END' at line 1
+# 
+# sql_mode=DEFAULT. Test with function, OUT NOCOPY
+# 
+CREATE OR REPLACE FUNCTION example_func(OUT NOCOPY p_out INT) RETURNS INT
+BEGIN
+RETURN 0;
+END;
+$$
+ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'NOCOPY p_out INT) RETURNS INT
+BEGIN
+RETURN 0;
+END' at line 1
+# 
+# sql_mode=DEFAULT. Test with function, INOUT NOCOPY
+# 
+CREATE OR REPLACE FUNCTION example_func(INOUT NOCOPY p_inout INT) RETURNS INT
+BEGIN
+RETURN 0;
+END;
+$$
+ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'NOCOPY p_inout INT) RETURNS INT
+BEGIN
+RETURN 0;
+END' at line 1
+# 
+# sql_mode=DEFAULT. Test with procedure, IN NOCOPY
+# 
+CREATE OR REPLACE PROCEDURE example_proc(IN NOCOPY p_in INT)
+BEGIN
+END;
+$$
+ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'NOCOPY p_in INT)
+BEGIN
+END' at line 1
+# 
+# sql_mode=DEFAULT. Test with procedure, OUT NOCOPY
+# 
+CREATE OR REPLACE PROCEDURE example_proc(OUT NOCOPY p_out INT)
+BEGIN
+END;
+$$
+ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'NOCOPY p_out INT)
+BEGIN
+END' at line 1
+# 
+# sql_mode=DEFAULT. Test with procedure, INOUT NOCOPY
+# 
+CREATE OR REPLACE PROCEDURE example_proc(INOUT NOCOPY p_inout INT)
+BEGIN
+END;
+$$
+ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'NOCOPY p_inout INT)
+BEGIN
+END' at line 1
+SET sql_mode=ORACLE;
+# 
+# sql_mode=ORACLE. Test with function
+# 
+CREATE OR REPLACE FUNCTION example_func(
+p_in1 IN VARCHAR(255),
+p_in2 IN NOCOPY VARCHAR(255),
+p_out1 OUT INT,
+p_out2 OUT NOCOPY INT,
+p_in_out1 IN OUT VARCHAR(255),
+p_in_out2 IN OUT NOCOPY VARCHAR(255),
+p_in_out3 INOUT NUMBER,
+p_in_out4 INOUT NOCOPY NUMBER) RETURN NUMBER AS
+BEGIN
+RETURN 0;
+END;
+$$
+DROP FUNCTION example_func;
+# 
+# sql_mode=ORACLE. Test with procedure
+# 
+CREATE OR REPLACE PROCEDURE example_proc(
+p_in1 IN VARCHAR(255),
+p_in2 IN NOCOPY VARCHAR(255),
+p_out1 OUT INT,
+p_out2 OUT NOCOPY INT,
+p_in_out1 IN OUT VARCHAR(255),
+p_in_out2 IN OUT NOCOPY VARCHAR(255),
+p_in_out3 INOUT NUMBER,
+p_in_out4 INOUT NOCOPY NUMBER) AS
+BEGIN
+END;
+$$
+DROP PROCEDURE example_proc;

mysql-test/main/sp-ignore_nocopy.test

@@ -0,0 +1,121 @@
+--echo # 
+--echo # MDEV-34316 sql_mode=ORACLE: Ignore the NOCOPY keyword in stored routine parameters
+--echo # 
+
+DELIMITER $$;
+
+--echo # 
+--echo # sql_mode=DEFAULT. Test with function, IN NOCOPY
+--echo # 
+
+--error ER_PARSE_ERROR
+CREATE OR REPLACE FUNCTION example_func(IN NOCOPY p_in INT) RETURNS INT
+BEGIN
+  RETURN 0;
+END;
+$$
+
+--echo # 
+--echo # sql_mode=DEFAULT. Test with function, OUT NOCOPY
+--echo # 
+
+--error ER_PARSE_ERROR
+CREATE OR REPLACE FUNCTION example_func(OUT NOCOPY p_out INT) RETURNS INT
+BEGIN
+  RETURN 0;
+END;
+$$
+
+--echo # 
+--echo # sql_mode=DEFAULT. Test with function, INOUT NOCOPY
+--echo # 
+
+--error ER_PARSE_ERROR
+CREATE OR REPLACE FUNCTION example_func(INOUT NOCOPY p_inout INT) RETURNS INT
+BEGIN
+  RETURN 0;
+END;
+$$
+
+--echo # 
+--echo # sql_mode=DEFAULT. Test with procedure, IN NOCOPY
+--echo # 
+
+--error ER_PARSE_ERROR
+CREATE OR REPLACE PROCEDURE example_proc(IN NOCOPY p_in INT)
+BEGIN
+END;
+$$
+
+--echo # 
+--echo # sql_mode=DEFAULT. Test with procedure, OUT NOCOPY
+--echo # 
+
+--error ER_PARSE_ERROR
+CREATE OR REPLACE PROCEDURE example_proc(OUT NOCOPY p_out INT)
+BEGIN
+END;
+$$
+
+--echo # 
+--echo # sql_mode=DEFAULT. Test with procedure, INOUT NOCOPY
+--echo # 
+
+--error ER_PARSE_ERROR
+CREATE OR REPLACE PROCEDURE example_proc(INOUT NOCOPY p_inout INT)
+BEGIN
+END;
+$$
+
+DELIMITER ;$$
+
+SET sql_mode=ORACLE;
+
+--echo # 
+--echo # sql_mode=ORACLE. Test with function
+--echo # 
+
+DELIMITER $$;
+
+CREATE OR REPLACE FUNCTION example_func(
+  p_in1 IN VARCHAR(255),
+  p_in2 IN NOCOPY VARCHAR(255),
+  p_out1 OUT INT,
+  p_out2 OUT NOCOPY INT,
+  p_in_out1 IN OUT VARCHAR(255),
+  p_in_out2 IN OUT NOCOPY VARCHAR(255),
+  p_in_out3 INOUT NUMBER,
+  p_in_out4 INOUT NOCOPY NUMBER) RETURN NUMBER AS
+BEGIN
+  RETURN 0;
+END;
+
+$$
+
+DELIMITER ;$$
+
+DROP FUNCTION example_func;
+
+--echo # 
+--echo # sql_mode=ORACLE. Test with procedure
+--echo # 
+
+DELIMITER $$;
+
+CREATE OR REPLACE PROCEDURE example_proc(
+  p_in1 IN VARCHAR(255),
+  p_in2 IN NOCOPY VARCHAR(255),
+  p_out1 OUT INT,
+  p_out2 OUT NOCOPY INT,
+  p_in_out1 IN OUT VARCHAR(255),
+  p_in_out2 IN OUT NOCOPY VARCHAR(255),
+  p_in_out3 INOUT NUMBER,
+  p_in_out4 INOUT NOCOPY NUMBER) AS
+BEGIN
+END;
+
+$$
+
+DELIMITER ;$$
+
+DROP PROCEDURE example_proc;

sql/lex.h

@@ -432,6 +432,7 @@ SYMBOL symbols[] = {
   { "NEXT",		SYM(NEXT_SYM)},
   { "NEXTVAL",		SYM(NEXTVAL_SYM)},
   { "NO",		SYM(NO_SYM)},
+  { "NOCOPY",		SYM(NOCOPY_SYM)},
   { "NOMAXVALUE",	SYM(NOMAXVALUE_SYM)},
   { "NOMINVALUE",	SYM(NOMINVALUE_SYM)},
   { "NOCACHE",          SYM(NOCACHE_SYM)},

sql/sql_yacc.yy

@@ -727,6 +727,7 @@ bool my_yyoverflow(short **a, YYSTYPE **b, size_t *yystacksize);
 %token  <kwd>  ELSIF_MARIADB_SYM             // PLSQL-R
 %token  <kwd>  EXCEPTION_ORACLE_SYM          // SQL-2003-N, PLSQL-R
 %token  <kwd>  GOTO_MARIADB_SYM              // Oracle-R
+%token  <kwd>  NOCOPY_SYM
 %token  <kwd>  OTHERS_MARIADB_SYM            // SQL-2011-N, PLSQL-R
 %token  <kwd>  PACKAGE_MARIADB_SYM           // Oracle-R
 %token  <kwd>  RAISE_MARIADB_SYM             // PLSQL-R
@@ -19048,6 +19049,11 @@ sp_opt_default:
           }
         ;
 
+sp_opt_nocopy:
+          _empty
+        | NOCOPY_SYM
+        ;
+
 sp_opt_inout:
           _empty         { $$= sp_variable::MODE_IN; }
         | sp_parameter_type
@@ -19461,7 +19467,7 @@ sp_decl_variable_list_anchored:
         ;
 
 sp_param_name_and_mode:
-          sp_param_name sp_opt_inout
+          sp_param_name sp_opt_inout sp_opt_nocopy
           {
              $1->mode= $2;
              $$= $1;