[fix](JdbcCatalog) fix that the predicate column name does not have back quote when querying the JDBC appearance

docker/thirdparties/docker-compose/mysql/init/03-create-table.sql

@@ -308,6 +308,11 @@ CREATE TABLE doris_test.dt_null (
 CREATE VIEW doris_test.mysql_view as
 select 10086 as col_1, 4294967295 as col_2, tinyint_u as col_3  from doris_test.all_types where tinyint_u=201;
 
+CREATE TABLE doris_test.test_key_word (
+`id` int,
+`key` int
+) ENGINE=INNODB CHARSET=utf8;
+
 CREATE TABLE show_test_do_not_modify.ex_tb0 (
   `id` int PRIMARY KEY,
   `name` varchar(128)

docker/thirdparties/docker-compose/mysql/init/04-insert.sql

@@ -1153,6 +1153,9 @@ SET SESSION sql_mode=(SELECT REPLACE(@@sql_mode,'STRICT_TRANS_TABLES',''));
 INSERT INTO doris_test.dt_null
 VALUES ('2023-06-17 10:00:00'),('0000-00-00 00:00:00');
 
+
+insert into doris_test.test_key_word values (1, 1), (2, 2);
+
 SET SESSION sql_mode=(SELECT REPLACE(@@sql_mode,'NO_ZERO_DATE',''));
 SET SESSION sql_mode=(SELECT REPLACE(@@sql_mode,'NO_ZERO_IN_DATE',''));
 

fe/fe-core/src/main/java/org/apache/doris/planner/external/jdbc/JdbcScanNode.java

@@ -353,6 +353,19 @@ public static String conjunctExprToString(TOdbcTableType tableType, Expr expr) {
             return filter;
         }
 
+        if (expr.contains(SlotRef.class) && expr instanceof BinaryPredicate) {
+            ArrayList<Expr> children = expr.getChildren();
+            String filter;
+            if (children.get(0) instanceof SlotRef) {
+                filter = JdbcTable.databaseProperName(tableType, children.get(0).toMySql());
+            } else {
+                filter = children.get(0).toMySql();
+            }
+            filter += " " + ((BinaryPredicate) expr).getOp().toString() + " ";
+            filter += children.get(1).toMySql();
+            return filter;
+        }
+
         // only for old planner
         if (expr.contains(BoolLiteral.class) && "1".equals(expr.getStringValue()) && expr.getChildren().isEmpty()) {
             return "1 = 1";

regression-test/data/external_table_p0/jdbc/test_mysql_jdbc_catalog.out

@@ -165,6 +165,9 @@ bca	2022-11-02	2022-11-02	8012	vivo
 1.12345	1.12345	1.12345	1.12345	1.12345	1.12345
 123456789012345678901234567890123.12345	12345678901234567890123456789012.12345	1234567890123456789012345678901234.12345	123456789012345678901234567890123.12345	123456789012345678901234567890123456789012345678901234567890.12345	123456789012345678901234567890123456789012345678901234567890.12345
 
+-- !ex_tb21 --
+2	2
+
 -- !information_schema --
 CHARACTER_SETS
 COLLATIONS

regression-test/suites/external_table_p0/jdbc/test_clickhouse_jdbc_catalog.groovy

@@ -80,7 +80,7 @@ suite("test_clickhouse_jdbc_catalog", "p0,external,clickhouse,external_docker,ex
         order_qt_func_push2 """select * from ts where ts <= unix_timestamp(from_unixtime(ts,'yyyyMMdd'));"""
         explain {
             sql("select * from ts where ts <= unix_timestamp(from_unixtime(ts,'yyyy-MM-dd'));")
-            contains """QUERY: SELECT "id", "ts" FROM "doris_test"."ts" WHERE (ts <= toUnixTimestamp(FROM_UNIXTIME(ts, '%Y-%m-%d')))"""
+            contains """QUERY: SELECT "id", "ts" FROM "doris_test"."ts" WHERE ("ts" <= toUnixTimestamp(FROM_UNIXTIME(ts, '%Y-%m-%d')))"""
         }
 
         sql """ drop catalog if exists ${catalog_name} """

regression-test/suites/external_table_p0/jdbc/test_mysql_jdbc_catalog.groovy

@@ -54,6 +54,7 @@ suite("test_mysql_jdbc_catalog", "p0,external,mysql,external_docker,external_doc
         String ex_tb18 = "ex_tb18";
         String ex_tb19 = "ex_tb19";
         String ex_tb20 = "ex_tb20";
+        String ex_tb21 = "test_key_word";
         String test_insert = "test_insert";
         String test_insert2 = "test_insert2";
         String test_insert_all_types = "test_insert_all_types";
@@ -158,6 +159,7 @@ suite("test_mysql_jdbc_catalog", "p0,external,mysql,external_docker,external_doc
         order_qt_ex_tb18  """ select * from ${ex_tb18} order by num_tinyint; """
         order_qt_ex_tb19  """ select * from ${ex_tb19} order by date_value; """
         order_qt_ex_tb20  """ select * from ${ex_tb20} order by decimal_normal; """
+        order_qt_ex_tb21  """ select `key`, `id` from ${ex_tb21} where `key` = 2 order by id;"""
         order_qt_information_schema """ show tables from information_schema; """
         order_qt_auto_default_t """insert into ${auto_default_t}(name) values('a'); """
         order_qt_dt """select * from ${dt}; """
@@ -367,7 +369,7 @@ suite("test_mysql_jdbc_catalog", "p0,external,mysql,external_docker,external_doc
         explain {
             sql ("select k6, k8 from test1 where nvl(k6, null) = 1 and k8 = 1;")
 
-            contains "QUERY: SELECT `k6`, `k8` FROM `doris_test`.`test1` WHERE (k8 = 1)"
+            contains "QUERY: SELECT `k6`, `k8` FROM `doris_test`.`test1` WHERE (`k8` = 1)"
         }
         sql """ admin set frontend config ("enable_func_pushdown" = "true"); """
         sql """ drop catalog if exists mysql_fun_push_catalog; """

regression-test/suites/external_table_p0/jdbc/test_mysql_jdbc_catalog_nereids.groovy

@@ -82,7 +82,7 @@ suite("test_mysql_jdbc_catalog_nereids", "p0,external,mysql,external_docker,exte
 
         explain {
             sql("""select id from ${ex_tb0} where id = 111;""")
-            contains "WHERE (id = 111)"
+            contains "WHERE (`id` = 111)"
         }
         qt_ex_tb0_where """select id from ${ex_tb0} where id = 111;"""
         order_qt_ex_tb0  """ select id, name from ${ex_tb0} order by id; """