diff --git a/ydb/library/yql/sql/v1/SQLv1.g.in b/ydb/library/yql/sql/v1/SQLv1.g.in
index 05da99626b15..d742f9114887 100644
--- a/ydb/library/yql/sql/v1/SQLv1.g.in
+++ b/ydb/library/yql/sql/v1/SQLv1.g.in
@@ -1783,7 +1783,7 @@ fragment STRING_SINGLE: (QUOTE_SINGLE STRING_CORE_SINGLE* QUOTE_SINGLE);
 fragment STRING_DOUBLE: (QUOTE_DOUBLE STRING_CORE_DOUBLE* QUOTE_DOUBLE);
 fragment STRING_MULTILINE: (DOUBLE_AT .* DOUBLE_AT)+ AT?;
 
-STRING_VALUE: ((STRING_SINGLE | STRING_DOUBLE | STRING_MULTILINE) (S | B | T | U | Y | J | P (T | B | V)?)?);
+STRING_VALUE: ((STRING_SINGLE | STRING_DOUBLE | STRING_MULTILINE) (S | U | Y | J | P (T | B | V)?)?);
 
 ID_PLAIN: ('a'..'z' | 'A'..'Z' | '_') ('a'..'z' | 'A'..'Z' | '_' | DIGIT)*;
 
diff --git a/ydb/library/yql/sql/v1/node.cpp b/ydb/library/yql/sql/v1/node.cpp
index 84df7e5b608b..520d15243253 100644
--- a/ydb/library/yql/sql/v1/node.cpp
+++ b/ydb/library/yql/sql/v1/node.cpp
@@ -1424,16 +1424,16 @@ StringContentInternal(TContext& ctx, TPosition pos, const TString& input, EStrin
         } else if (lower.EndsWith("pv")) {
             str = str.substr(0, str.Size() - 2);
             result.PgType = "PgVarchar";
-        } else if (lower.EndsWith("s") || lower.EndsWith("b")) {
+        } else if (lower.EndsWith("s")) {
             str = str.substr(0, str.Size() - 1);
             result.Type = NKikimr::NUdf::EDataSlot::String;
-        } else if (lower.EndsWith("u") || lower.EndsWith("t")) {
+        } else if (lower.EndsWith("u")) {
             str = str.substr(0, str.Size() - 1);
             result.Type = NKikimr::NUdf::EDataSlot::Utf8;
         } else {
             if (ctx.Scoped->WarnUntypedStringLiterals) {
                 ctx.Warning(pos, TIssuesIds::YQL_UNTYPED_STRING_LITERALS)
-                << "Please add suffix u or t for Utf8 strings or s or b for arbitrary binary strings";
+                << "Please add suffix u for Utf8 strings or s for arbitrary binary strings";
             }
 
             if (ctx.Scoped->UnicodeLiterals) {
diff --git a/ydb/library/yql/tests/sql/dq_file/part14/canondata/result.json b/ydb/library/yql/tests/sql/dq_file/part14/canondata/result.json
index 7dcba4956af9..f2dd6701da2c 100644
--- a/ydb/library/yql/tests/sql/dq_file/part14/canondata/result.json
+++ b/ydb/library/yql/tests/sql/dq_file/part14/canondata/result.json
@@ -1023,9 +1023,9 @@
     ],
     "test.test[expr-unicode_literals-default.txt-Debug]": [
         {
-            "checksum": "9201dbe44a3334deb0a063d58468a160",
-            "size": 522,
-            "uri": "https://{canondata_backend}/1871002/fb6fb37c565974a6f0c497e8b3e58f6b5bf320b2/resource.tar.gz#test.test_expr-unicode_literals-default.txt-Debug_/opt.yql_patched"
+            "checksum": "a65d6b9299b9ecfa68d1377414a3d814",
+            "size": 462,
+            "uri": "https://{canondata_backend}/1925842/c2ce7c5eeafa7c99dd47a4e0bc6a7304dd057c69/resource.tar.gz#test.test_expr-unicode_literals-default.txt-Debug_/opt.yql_patched"
         }
     ],
     "test.test[expr-unicode_literals-default.txt-Plan]": [
diff --git a/ydb/library/yql/tests/sql/dq_file/part14/canondata/test.test_expr-unicode_literals-default.txt-Analyze_/extracted b/ydb/library/yql/tests/sql/dq_file/part14/canondata/test.test_expr-unicode_literals-default.txt-Analyze_/extracted
index a7947fe4b5f9..d107296d2af3 100644
--- a/ydb/library/yql/tests/sql/dq_file/part14/canondata/test.test_expr-unicode_literals-default.txt-Analyze_/extracted
+++ b/ydb/library/yql/tests/sql/dq_file/part14/canondata/test.test_expr-unicode_literals-default.txt-Analyze_/extracted
@@ -1,15 +1,15 @@
 <tmp_path>/program.sql:<main>: Warning: Parse Sql
 
-    <tmp_path>/program.sql:<main>:9:6: Warning: Please add suffix u or t for Utf8 strings or s or b for arbitrary binary strings
-    		    "e");
+    <tmp_path>/program.sql:<main>:7:6: Warning: Please add suffix u for Utf8 strings or s for arbitrary binary strings
+    		    "c");
 	     ^
 <tmp_path>/program.sql:<main>: Warning: Parse Sql
 
-    <tmp_path>/program.sql:<main>:9:6: Warning: Please add suffix u or t for Utf8 strings or s or b for arbitrary binary strings
-    		    "e");
+    <tmp_path>/program.sql:<main>:7:6: Warning: Please add suffix u for Utf8 strings or s for arbitrary binary strings
+    		    "c");
 	     ^
 <tmp_path>/program.sql:<main>: Warning: Parse Sql
 
-    <tmp_path>/program.sql:<main>:9:6: Warning: Please add suffix u or t for Utf8 strings or s or b for arbitrary binary strings
-    		    "e");
+    <tmp_path>/program.sql:<main>:7:6: Warning: Please add suffix u for Utf8 strings or s for arbitrary binary strings
+    		    "c");
 	     ^
\ No newline at end of file
diff --git a/ydb/library/yql/tests/sql/dq_file/part14/canondata/test.test_expr-unicode_literals-default.txt-Results_/extracted b/ydb/library/yql/tests/sql/dq_file/part14/canondata/test.test_expr-unicode_literals-default.txt-Results_/extracted
index a7947fe4b5f9..d107296d2af3 100644
--- a/ydb/library/yql/tests/sql/dq_file/part14/canondata/test.test_expr-unicode_literals-default.txt-Results_/extracted
+++ b/ydb/library/yql/tests/sql/dq_file/part14/canondata/test.test_expr-unicode_literals-default.txt-Results_/extracted
@@ -1,15 +1,15 @@
 <tmp_path>/program.sql:<main>: Warning: Parse Sql
 
-    <tmp_path>/program.sql:<main>:9:6: Warning: Please add suffix u or t for Utf8 strings or s or b for arbitrary binary strings
-    		    "e");
+    <tmp_path>/program.sql:<main>:7:6: Warning: Please add suffix u for Utf8 strings or s for arbitrary binary strings
+    		    "c");
 	     ^
 <tmp_path>/program.sql:<main>: Warning: Parse Sql
 
-    <tmp_path>/program.sql:<main>:9:6: Warning: Please add suffix u or t for Utf8 strings or s or b for arbitrary binary strings
-    		    "e");
+    <tmp_path>/program.sql:<main>:7:6: Warning: Please add suffix u for Utf8 strings or s for arbitrary binary strings
+    		    "c");
 	     ^
 <tmp_path>/program.sql:<main>: Warning: Parse Sql
 
-    <tmp_path>/program.sql:<main>:9:6: Warning: Please add suffix u or t for Utf8 strings or s or b for arbitrary binary strings
-    		    "e");
+    <tmp_path>/program.sql:<main>:7:6: Warning: Please add suffix u for Utf8 strings or s for arbitrary binary strings
+    		    "c");
 	     ^
\ No newline at end of file
diff --git a/ydb/library/yql/tests/sql/sql2yql/canondata/result.json b/ydb/library/yql/tests/sql/sql2yql/canondata/result.json
index 5a9a1a683692..0cdd3527e3af 100644
--- a/ydb/library/yql/tests/sql/sql2yql/canondata/result.json
+++ b/ydb/library/yql/tests/sql/sql2yql/canondata/result.json
@@ -5804,9 +5804,9 @@
     ],
     "test_sql2yql.test[expr-unicode_literals]": [
         {
-            "checksum": "9be93914e3d28b675e0eee080ef248ec",
-            "size": 1964,
-            "uri": "https://{canondata_backend}/1937367/9f749035d8f07b7ae5537f5aebd224641b378134/resource.tar.gz#test_sql2yql.test_expr-unicode_literals_/sql.yql"
+            "checksum": "ee24a9f27885bf7ae3f4b2db0d677a0a",
+            "size": 1912,
+            "uri": "https://{canondata_backend}/1777230/02994451d1c8953a8e9142350351d7282debc251/resource.tar.gz#test_sql2yql.test_expr-unicode_literals_/sql.yql"
         }
     ],
     "test_sql2yql.test[expr-untag]": [
@@ -23304,9 +23304,9 @@
     ],
     "test_sql_format.test[expr-unicode_literals]": [
         {
-            "checksum": "b470490a33e28dd2537f12d80329216a",
-            "size": 374,
-            "uri": "https://{canondata_backend}/1937367/9f749035d8f07b7ae5537f5aebd224641b378134/resource.tar.gz#test_sql_format.test_expr-unicode_literals_/formatted.sql"
+            "checksum": "e8e56821ff77c888713ff8852fb1518a",
+            "size": 318,
+            "uri": "https://{canondata_backend}/1777230/02994451d1c8953a8e9142350351d7282debc251/resource.tar.gz#test_sql_format.test_expr-unicode_literals_/formatted.sql"
         }
     ],
     "test_sql_format.test[expr-untag]": [
diff --git a/ydb/library/yql/tests/sql/suites/expr/unicode_literals.sql b/ydb/library/yql/tests/sql/suites/expr/unicode_literals.sql
index bf7379e784d0..1910693fa817 100644
--- a/ydb/library/yql/tests/sql/suites/expr/unicode_literals.sql
+++ b/ydb/library/yql/tests/sql/suites/expr/unicode_literals.sql
@@ -3,10 +3,8 @@ pragma UnicodeLiterals;
 $f = ()->{
     return (
 	    "a"s,
-	    "b"b,
-	    "c"t,
-	    "d"u,
-	    "e");
+	    "b"u,
+	    "c");
 };
 
 select $f();
@@ -16,10 +14,8 @@ pragma DisableUnicodeLiterals;
 $g = ()->{
     return (
 	    "a"s,
-	    "b"b,
-	    "c"t,
-	    "d"u,
-	    "e");
+	    "b"u,
+	    "c");
 };
 
 select $g();
diff --git a/ydb/library/yql/tests/sql/yt_native_file/part14/canondata/result.json b/ydb/library/yql/tests/sql/yt_native_file/part14/canondata/result.json
index 6b1ba88048e9..344ff5652e9a 100644
--- a/ydb/library/yql/tests/sql/yt_native_file/part14/canondata/result.json
+++ b/ydb/library/yql/tests/sql/yt_native_file/part14/canondata/result.json
@@ -1027,9 +1027,9 @@
     ],
     "test.test[expr-unicode_literals-default.txt-Debug]": [
         {
-            "checksum": "b21fde16b24ef5500d9c21f811fc800b",
-            "size": 452,
-            "uri": "https://{canondata_backend}/1942671/fe81aca6675f95264895c6b4c3bafedf6b92cfd5/resource.tar.gz#test.test_expr-unicode_literals-default.txt-Debug_/opt.yql"
+            "checksum": "3f03a04f8c9c6e18430956926497586a",
+            "size": 394,
+            "uri": "https://{canondata_backend}/1777230/7741a861d2b9bc50c005d3f3c3fb85c0e7005074/resource.tar.gz#test.test_expr-unicode_literals-default.txt-Debug_/opt.yql"
         }
     ],
     "test.test[expr-unicode_literals-default.txt-Plan]": [
@@ -1041,9 +1041,9 @@
     ],
     "test.test[expr-unicode_literals-default.txt-Results]": [
         {
-            "checksum": "634838888e147228dfbca0438c1c75d5",
-            "size": 3698,
-            "uri": "https://{canondata_backend}/1942671/fe81aca6675f95264895c6b4c3bafedf6b92cfd5/resource.tar.gz#test.test_expr-unicode_literals-default.txt-Results_/results.txt"
+            "checksum": "2b32d6241e0e4814c15d8c9eae970191",
+            "size": 2794,
+            "uri": "https://{canondata_backend}/1777230/7741a861d2b9bc50c005d3f3c3fb85c0e7005074/resource.tar.gz#test.test_expr-unicode_literals-default.txt-Results_/results.txt"
         },
         {
             "uri": "file://test.test_expr-unicode_literals-default.txt-Results_/extracted"
diff --git a/ydb/library/yql/tests/sql/yt_native_file/part14/canondata/test.test_expr-unicode_literals-default.txt-Results_/extracted b/ydb/library/yql/tests/sql/yt_native_file/part14/canondata/test.test_expr-unicode_literals-default.txt-Results_/extracted
index e1547d9f4683..4695b8999d2a 100644
--- a/ydb/library/yql/tests/sql/yt_native_file/part14/canondata/test.test_expr-unicode_literals-default.txt-Results_/extracted
+++ b/ydb/library/yql/tests/sql/yt_native_file/part14/canondata/test.test_expr-unicode_literals-default.txt-Results_/extracted
@@ -1,5 +1,5 @@
 <tmp_path>/program.sql:<main>: Warning: Parse Sql
 
-    <tmp_path>/program.sql:<main>:9:6: Warning: Please add suffix u or t for Utf8 strings or s or b for arbitrary binary strings
-    		    "e");
+    <tmp_path>/program.sql:<main>:7:6: Warning: Please add suffix u for Utf8 strings or s for arbitrary binary strings
+    		    "c");
 	     ^
\ No newline at end of file