diff --git a/data/txt/sha256sums.txt b/data/txt/sha256sums.txt
index 7a182bd65..04abf9931 100644
--- a/data/txt/sha256sums.txt
+++ b/data/txt/sha256sums.txt
@@ -188,7 +188,7 @@ bf77f9fc4296f239687297aee1fd6113b34f855965a6f690b52e26bd348cb353  lib/core/profi
 4eff81c639a72b261c8ba1c876a01246e718e6626e8e77ae9cc6298b20a39355  lib/core/replication.py
 bbd1dcda835934728efc6d68686e9b0da72b09b3ee38f3c0ab78e8c18b0ba726  lib/core/revision.py
 eed6b0a21b3e69c5583133346b0639dc89937bd588887968ee85f8389d7c3c96  lib/core/session.py
-a5cbfdbcdc7ff49d55b83d9b9944036d0950fbdce07f06fdace048b109e9e198  lib/core/settings.py
+21ced71b8db133032ecc94a26e8855c6e7ad709684c8a5a97b4b6d9f0f488c9a  lib/core/settings.py
 2bec97d8a950f7b884e31dfe9410467f00d24f21b35672b95f8d68ed59685fd4  lib/core/shell.py
 e90a359b37a55c446c60e70ccd533f87276714d0b09e34f69b0740fd729ddbf8  lib/core/subprocessng.py
 54f7c70b4c7a9931f7ff3c1c12030180bde38e35a306d5e343ad6052919974cd  lib/core/target.py
@@ -240,7 +240,7 @@ f948fefb0fa67da8cf037f7abbcdbb740148babda9ad8a58fab1693456834817  lib/techniques
 99d0e94dd5fe60137abf48bfa051129fb251f5c40f0f7a270c89fbcb07323730  lib/techniques/__init__.py
 99d0e94dd5fe60137abf48bfa051129fb251f5c40f0f7a270c89fbcb07323730  lib/techniques/union/__init__.py
 700cc5e8cae85bd86674d0cb6c97093fde2c52a480cc1e40ae0010fffd649395  lib/techniques/union/test.py
-a78235881a80d2ce8a069a3c743b4af415ed6f0a54b120190909d1e206048259  lib/techniques/union/use.py
+74ecbeff52a6fba83fc2c93612afd8befdbdc0c25566d31e5d20fbbc5b895054  lib/techniques/union/use.py
 6b3f83a85c576830783a64e943a58e90b1f25e9e24cd51ae12b1d706796124e9  lib/utils/api.py
 e00740b9a4c997152fa8b00d3f0abf45ae15e23c33a92966eaa658fde83c586f  lib/utils/brute.py
 c0a4765aa80c5d9b7ef1abe93401a78dd45b2766a1f4ff6286287dc6188294de  lib/utils/crawler.py
diff --git a/lib/core/settings.py b/lib/core/settings.py
index f5c785654..31ba7daae 100644
--- a/lib/core/settings.py
+++ b/lib/core/settings.py
@@ -19,7 +19,7 @@ from lib.core.enums import OS
 from thirdparty import six
 
 # sqlmap version (<major>.<minor>.<month>.<monthly commit>)
-VERSION = "1.8.11.6"
+VERSION = "1.8.11.7"
 TYPE = "dev" if VERSION.count('.') > 2 and VERSION.split('.')[-1] != '0' else "stable"
 TYPE_COLORS = {"dev": 33, "stable": 90, "pip": 34}
 VERSION_STRING = "sqlmap/%s#%s" % ('.'.join(VERSION.split('.')[:-1]) if VERSION.count('.') > 2 and VERSION.split('.')[-1] == '0' else VERSION, TYPE)
diff --git a/lib/techniques/union/use.py b/lib/techniques/union/use.py
index 982861b2d..f1b8ca74d 100644
--- a/lib/techniques/union/use.py
+++ b/lib/techniques/union/use.py
@@ -261,7 +261,7 @@ def unionUse(expression, unpack=True, dump=False):
         if match and not (Backend.isDbms(DBMS.ORACLE) and FROM_DUMMY_TABLE[DBMS.ORACLE] in expression) and not re.search(r"\b(MIN|MAX|COUNT|EXISTS)\(", expression):
             kb.jsonAggMode = True
             if Backend.isDbms(DBMS.MYSQL):
-                query = expression.replace(expressionFields, "CONCAT('%s',JSON_ARRAYAGG(CONCAT_WS('%s',%s)),'%s')" % (kb.chars.start, kb.chars.delimiter, expressionFields, kb.chars.stop), 1)
+                query = expression.replace(expressionFields, "CONCAT('%s',JSON_ARRAYAGG(CONCAT_WS('%s',%s)),'%s')" % (kb.chars.start, kb.chars.delimiter, ','.join(agent.nullAndCastField(field) for field in expressionFieldsList), kb.chars.stop), 1)
             elif Backend.isDbms(DBMS.ORACLE):
                 query = expression.replace(expressionFields, "'%s'||JSON_ARRAYAGG(%s)||'%s'" % (kb.chars.start, ("||'%s'||" % kb.chars.delimiter).join(expressionFieldsList), kb.chars.stop), 1)
             elif Backend.isDbms(DBMS.SQLITE):