MDEV-17652 Add sql_mode specific tokens for some keywords

sql/gen_lex_token.cc

@@ -255,7 +255,8 @@ void compute_tokens()
   set_start_expr_token(STARTS_SYM);
   set_start_expr_token(ENDS_SYM);
   set_start_expr_token(DEFAULT);
-  set_start_expr_token(RETURN_SYM);
+  set_start_expr_token(RETURN_MARIADB_SYM);
+  set_start_expr_token(RETURN_ORACLE_SYM);
   set_start_expr_token(IF_SYM);
   set_start_expr_token(ELSEIF_SYM);
   set_start_expr_token(CASE_SYM);

sql/lex.h

@@ -82,7 +82,7 @@ static SYMBOL symbols[] = {
   { "AVG_ROW_LENGTH",	SYM(AVG_ROW_LENGTH)},
   { "BACKUP",	        SYM(BACKUP_SYM)},
   { "BEFORE",	        SYM(BEFORE_SYM)},
-  { "BEGIN",	        SYM(BEGIN_SYM)},
+  { "BEGIN",	        SYM(BEGIN_MARIADB_SYM)},
   { "BETWEEN",		SYM(BETWEEN_SYM)},
   { "BIGINT",		SYM(BIGINT)},
   { "BINARY",		SYM(BINARY)},
@@ -90,7 +90,7 @@ static SYMBOL symbols[] = {
   { "BIT",		SYM(BIT_SYM)},
   { "BLOB",		SYM(BLOB_SYM)},
   { "BLOCK",  SYM(BLOCK_SYM)},
-  { "BODY",             SYM(BODY_SYM)},
+  { "BODY",             SYM(BODY_MARIADB_SYM)},
   { "BOOL",		SYM(BOOL_SYM)},
   { "BOOLEAN",		SYM(BOOLEAN_SYM)},
   { "BOTH",		SYM(BOTH)},
@@ -145,7 +145,7 @@ static SYMBOL symbols[] = {
   { "CONSTRAINT_SCHEMA", SYM(CONSTRAINT_SCHEMA_SYM)},
   { "CONTAINS",         SYM(CONTAINS_SYM)},
   { "CONTEXT",    SYM(CONTEXT_SYM)},
-  { "CONTINUE",         SYM(CONTINUE_SYM)},
+  { "CONTINUE",         SYM(CONTINUE_MARIADB_SYM)},
   { "CONTRIBUTORS",     SYM(CONTRIBUTORS_SYM)},
   { "CONVERT",		SYM(CONVERT_SYM)},
   { "CPU",        SYM(CPU_SYM)},
@@ -206,7 +206,7 @@ static SYMBOL symbols[] = {
   { "EACH",             SYM(EACH_SYM)},
   { "ELSE",             SYM(ELSE)},
   { "ELSEIF",           SYM(ELSEIF_SYM)},
-  { "ELSIF",            SYM(ELSIF_SYM)},
+  { "ELSIF",            SYM(ELSIF_MARIADB_SYM)},
   { "ENABLE",		SYM(ENABLE_SYM)},
   { "ENCLOSED",		SYM(ENCLOSED)},
   { "END",		SYM(END)},
@@ -226,9 +226,9 @@ static SYMBOL symbols[] = {
   { "EXCHANGE",         SYM(EXCHANGE_SYM)},
   { "EXCLUDE",          SYM(EXCLUDE_SYM)},
   { "EXECUTE",		SYM(EXECUTE_SYM)},
-  { "EXCEPTION",	SYM(EXCEPTION_SYM)},
+  { "EXCEPTION",	SYM(EXCEPTION_MARIADB_SYM)},
   { "EXISTS",		SYM(EXISTS)},
-  { "EXIT",             SYM(EXIT_SYM)},
+  { "EXIT",             SYM(EXIT_MARIADB_SYM)},
   { "EXPANSION",	SYM(EXPANSION_SYM)},
   { "EXPORT",           SYM(EXPORT_SYM)},
   { "EXPLAIN",		SYM(DESCRIBE)},
@@ -264,7 +264,7 @@ static SYMBOL symbols[] = {
   { "GET_FORMAT",       SYM(GET_FORMAT)},
   { "GET",              SYM(GET_SYM)},
   { "GLOBAL",		SYM(GLOBAL_SYM)},
-  { "GOTO",            SYM(GOTO_SYM)},
+  { "GOTO",             SYM(GOTO_MARIADB_SYM)},
   { "GRANT",		SYM(GRANT)},
   { "GRANTS",	        SYM(GRANTS)},
   { "GROUP",		SYM(GROUP_SYM)},
@@ -451,13 +451,13 @@ static SYMBOL symbols[] = {
   { "OPTIONALLY",	SYM(OPTIONALLY)},
   { "OR",		SYM(OR_SYM)},
   { "ORDER",		SYM(ORDER_SYM)},
-  { "OTHERS",           SYM(OTHERS_SYM)},
+  { "OTHERS",           SYM(OTHERS_MARIADB_SYM)},
   { "OUT",              SYM(OUT_SYM)},
   { "OUTER",		SYM(OUTER)},
   { "OUTFILE",		SYM(OUTFILE)},
   { "OVER",             SYM(OVER_SYM)},
   { "OWNER",		SYM(OWNER_SYM)},
-  { "PACKAGE",          SYM(PACKAGE_SYM)},
+  { "PACKAGE",          SYM(PACKAGE_MARIADB_SYM)},
   { "PACK_KEYS",	SYM(PACK_KEYS_SYM)},
   { "PAGE",	        SYM(PAGE_SYM)},
   { "PAGE_CHECKSUM",	SYM(PAGE_CHECKSUM_SYM)},
@@ -495,7 +495,7 @@ static SYMBOL symbols[] = {
   { "QUARTER",          SYM(QUARTER_SYM)},
   { "QUERY",		SYM(QUERY_SYM)},
   { "QUICK",	        SYM(QUICK)},
-  { "RAISE",            SYM(RAISE_SYM)},
+  { "RAISE",            SYM(RAISE_MARIADB_SYM)},
   { "RANGE",            SYM(RANGE_SYM)},
   { "RAW",              SYM(RAW)},
   { "READ",		SYM(READ_SYM)},
@@ -534,7 +534,7 @@ static SYMBOL symbols[] = {
   { "RESTRICT",		SYM(RESTRICT)},
   { "RESUME",           SYM(RESUME_SYM)},
   { "RETURNED_SQLSTATE",SYM(RETURNED_SQLSTATE_SYM)},
-  { "RETURN",           SYM(RETURN_SYM)},
+  { "RETURN",           SYM(RETURN_MARIADB_SYM)},
   { "RETURNING",        SYM(RETURNING_SYM)},
   { "RETURNS",		SYM(RETURNS_SYM)},
   { "REUSE",            SYM(REUSE_SYM)},
@@ -549,7 +549,7 @@ static SYMBOL symbols[] = {
   { "ROW",		SYM(ROW_SYM)},
   { "ROWCOUNT",         SYM(ROWCOUNT_SYM)}, /* Oracle-N */
   { "ROWS",		SYM(ROWS_SYM)},
-  { "ROWTYPE",          SYM(ROWTYPE_SYM)},
+  { "ROWTYPE",          SYM(ROWTYPE_MARIADB_SYM)},
   { "ROW_COUNT",        SYM(ROW_COUNT_SYM)},
   { "ROW_FORMAT",	SYM(ROW_FORMAT_SYM)},
   { "RTREE",		SYM(RTREE_SYM)},

sql/sp_pcontext.cc

@@ -409,6 +409,19 @@ sp_condition_value *sp_pcontext::find_condition(const LEX_CSTRING *name,
     NULL;
 }
 
+sp_condition_value *
+sp_pcontext::find_declared_or_predefined_condition(THD *thd,
+                                                   const LEX_CSTRING *name)
+                                                   const
+{
+  sp_condition_value *p= find_condition(name, false);
+  if (p)
+    return p;
+  if (thd->variables.sql_mode & MODE_ORACLE)
+    return find_predefined_condition(name);
+  return NULL;
+}
+
 
 static sp_condition_value
   // Warnings

sql/sp_pcontext.h

@@ -592,13 +592,7 @@ class sp_pcontext : public Sql_alloc
                                      bool current_scope_only) const;
 
   sp_condition_value *
-  find_declared_or_predefined_condition(const LEX_CSTRING *name) const
-  {
-    sp_condition_value *p= find_condition(name, false);
-    if (p)
-      return p;
-    return find_predefined_condition(name);
-  }
+  find_declared_or_predefined_condition(THD *thd, const LEX_CSTRING *name) const;
 
   bool declare_condition(THD *thd, const LEX_CSTRING *name,
                                    sp_condition_value *val)

sql/sql_lex.cc

@@ -838,6 +838,24 @@ int Lex_input_stream::find_keyword(Lex_ident_cli_st *kwd,
     DBUG_ASSERT(tok >= get_buf());
     DBUG_ASSERT(tok < get_end_of_query());
 
+    if (m_thd->variables.sql_mode & MODE_ORACLE)
+    {
+      switch (symbol->tok) {
+      case BEGIN_MARIADB_SYM:          return BEGIN_ORACLE_SYM;
+      case BODY_MARIADB_SYM:           return BODY_ORACLE_SYM;
+      case CONTINUE_MARIADB_SYM:       return CONTINUE_ORACLE_SYM;
+      case ELSIF_MARIADB_SYM:          return ELSIF_ORACLE_SYM;
+      case EXCEPTION_MARIADB_SYM:      return EXCEPTION_ORACLE_SYM;
+      case EXIT_MARIADB_SYM:           return EXIT_ORACLE_SYM;
+      case GOTO_MARIADB_SYM:           return GOTO_ORACLE_SYM;
+      case OTHERS_MARIADB_SYM:         return OTHERS_ORACLE_SYM;
+      case PACKAGE_MARIADB_SYM:        return PACKAGE_ORACLE_SYM;
+      case RAISE_MARIADB_SYM:          return RAISE_ORACLE_SYM;
+      case RETURN_MARIADB_SYM:         return RETURN_ORACLE_SYM;
+      case ROWTYPE_MARIADB_SYM:        return ROWTYPE_ORACLE_SYM;
+      }
+    }
+
     if ((symbol->tok == NOT_SYM) &&
         (m_thd->variables.sql_mode & MODE_HIGH_NOT_PRECEDENCE))
       return NOT2_SYM;