diff --git a/README.md b/README.md
index fadf352..65adf15 100644
--- a/README.md
+++ b/README.md
@@ -18,6 +18,8 @@ Converts MySQL dump to SQLite3 compatible dump (including MySQL `KEY xxxxx` stat
     ./mysql2sqlite dump_mysql.sql | sqlite3 mysqlite3.db
     ~~~~
 
+(both `mysql2sqlite` and `sqlite3` might write something to stdout and stderr - e.g. `memory` coming from `PRAGMA journal_mode = MEMORY;` is not harmful)
+
 ## Development
 
 The script is written in *awk* (tested with gawk, but should work with original awk, and the lightning fast mawk) and shall be fully POSIX compliant.
diff --git a/mysql2sqlite b/mysql2sqlite
index deaa469..2a3e374 100755
--- a/mysql2sqlite
+++ b/mysql2sqlite
@@ -9,8 +9,13 @@ function printerr( s ){ print s | "cat >&2" }
 BEGIN {
   if( ARGC != 2 ){
     printerr( \
-      "USAGE: mysql2sqlite dump_mysql.sql > dump_sqlite3.sql\n" \
-      "       file name - (dash) is not supported, because - means stdin")
+      "USAGE:\n"\
+      "       mysql2sqlite dump_mysql.sql > dump_sqlite3.sql\n" \
+      "       OR\n" \
+      "       mysql2sqlite dump_mysql.sql | sqlite3 sqlite.db\n" \
+      "\n" \
+      "NOTES:\n" \
+      "       Dash in filename is not supported, because dash (-) means stdin." )
     no_END = 1
     exit 1
   }
@@ -136,7 +141,7 @@ inView != 0 { next }
 }
 
 # CREATE DATABASE is not supported
-/^(CREATE.*DATABASE|create.*database)/ { next }
+/^(CREATE DATABASE|create database)/ { next }
 
 # print the CREATE line as is and capture the table name
 /^(CREATE|create)/ {
@@ -157,7 +162,7 @@ inView != 0 { next }
 }
 
 # Replace `FULLTEXT KEY` (probably other `XXXXX KEY`)
-/^  (FULLTEXT KEY|fulltext key)/ { gsub( /.+(KEY|key)/, "  KEY" ) }
+/^  (FULLTEXT KEY|fulltext key)/ { gsub( /[A-Za-z ]+(KEY|key)/, "  KEY" ) }
 
 # Get rid of field lengths in KEY lines
 / (PRIMARY |primary )?(KEY|key)/ { gsub( /\([0-9]+\)/, "" ) }
@@ -189,12 +194,18 @@ aInc == 1 && /PRIMARY KEY|primary key/ { next }
   gsub( /(ENUM|enum)[^)]+\)/, "text " )
   gsub( /(SET|set)\([^)]+\)/, "text " )
   gsub( /UNSIGNED|unsigned/, "" )
+  gsub( /_utf8mb3/, "" )
   gsub( /` [^ ]*(INT|int|BIT|bit)[^ ]*/, "` integer" )
   gsub( /" [^ ]*(INT|int|BIT|bit)[^ ]*/, "\" integer" )
   ere_bit_field = "[bB]'[10]+'"
   if( match($0, ere_bit_field) ){
     sub( ere_bit_field, bit_to_int( substr( $0, RSTART +2, RLENGTH -2 -1 ) ) )
   }
+
+  # remove USING BTREE and other suffixes for USING, for example: "UNIQUE KEY
+  # `hostname_domain` (`hostname`,`domain`) USING BTREE,"
+  gsub( / USING [^, ]+/, "" )
+
   # field comments are not supported
   gsub( / (COMMENT|comment).+$/, "" )
   # Get commas off end of line
@@ -211,7 +222,7 @@ aInc == 1 && /PRIMARY KEY|primary key/ { next }
   else {
     # FIXME check if this is correct in all cases
     if( match( $1,
-        /(CONSTRAINT|constraint) \".*\" (FOREIGN KEY|foreign key)/ ) ){
+        /(CONSTRAINT|constraint) ["].*["] (FOREIGN KEY|foreign key)/ ) ){
       print ","
     }
   }
diff --git a/unit_tests.sh b/unit_tests.sh
index 46d1304..8ad82b0 100755
--- a/unit_tests.sh
+++ b/unit_tests.sh
@@ -121,5 +121,26 @@ SQLout
 
 
 cat <<\SQL
+CREATE TABLE `scimag` (
+  `ID` int(15) unsigned NOT NULL AUTO_INCREMENT,
+  `DOI` varchar(200) NOT NULL,
+  PRIMARY KEY (`ID`) USING BTREE,
+  UNIQUE KEY `DOIUNIQUE` (`DOI`) USING BTREE,
+);
 SQL
 
+cat <<\SQLin
+CREATE TABLE `scimag` (
+  `TEXTFIELD` text DEFAULT (_utf8mb3'text_value'),
+);
+SQLin
+
+cat <<\SQLout
+PRAGMA synchronous = OFF;
+PRAGMA journal_mode = MEMORY;
+BEGIN TRANSACTION;
+CREATE TABLE `scimag` (
+  `TEXTFIELD` text DEFAULT ('text_value')
+);
+END TRANSACTION;
+SQLout