diff --git a/boil/_fixtures/11.sql b/boil/_fixtures/11.sql
index 8f6f4b3..818874c 100644
--- a/boil/_fixtures/11.sql
+++ b/boil/_fixtures/11.sql
@@ -1 +1 @@
-UPDATE thing happy, "fun", "stuff" SET ("col2", "fun"."col3", "col1") = ($1,$2,$3) WHERE (aa=$4 or bb=$5 or cc=$6) OR (dd=$7 or ee=$8 or ff=$9 and gg=$10) LIMIT 5;
\ No newline at end of file
+UPDATE thing happy, "fun", "stuff" SET ("col2", "fun"."col3", "col1") = ($1,$2,$3) WHERE (aa=$4 or bb=$5 or cc=$6) AND (dd=$7 or ee=$8 or ff=$9 and gg=$10) LIMIT 5;
\ No newline at end of file
diff --git a/boil/qm/query_mods.go b/boil/qm/query_mods.go
index e7fc934..f085046 100644
--- a/boil/qm/query_mods.go
+++ b/boil/qm/query_mods.go
@@ -63,8 +63,8 @@ func And(clause string, args ...interface{}) QueryMod {
 // Or allows you to specify a where clause seperated by an OR for your statement
 func Or(clause string, args ...interface{}) QueryMod {
 	return func(q *boil.Query) {
-		boil.SetLastWhereAsOr(q)
 		boil.AppendWhere(q, clause, args...)
+		boil.SetLastWhereAsOr(q)
 	}
 }
 
@@ -90,8 +90,8 @@ func AndIn(clause string, args ...interface{}) QueryMod {
 // an OR for your where statement
 func OrIn(clause string, args ...interface{}) QueryMod {
 	return func(q *boil.Query) {
-		boil.SetLastInAsOr(q)
 		boil.AppendIn(q, clause, args...)
+		boil.SetLastInAsOr(q)
 	}
 }
 
diff --git a/boil/query_builders.go b/boil/query_builders.go
index 7173e2a..3896108 100644
--- a/boil/query_builders.go
+++ b/boil/query_builders.go
@@ -12,6 +12,7 @@ import (
 
 var (
 	rgxIdentifier = regexp.MustCompile(`^(?i)"?[a-z_][_a-z0-9]*"?(?:\."?[_a-z][_a-z0-9]*"?)*$`)
+	rgxInClause   = regexp.MustCompile(`^(?i)(.*[\s|\)|\?])IN([\s|\(|\?].*)$`)
 )
 
 func buildQuery(q *Query) (string, []interface{}) {
@@ -77,7 +78,8 @@ func buildSelectQuery(q *Query) (*bytes.Buffer, []interface{}) {
 			fmt.Fprintf(joinBuf, " INNER JOIN %s", j.clause)
 			args = append(args, j.args...)
 		}
-		fmt.Fprintf(buf, convertQuestionMarks(joinBuf.String(), argsLen+1))
+		resp, _ := convertQuestionMarks(joinBuf.String(), argsLen+1)
+		fmt.Fprintf(buf, resp)
 		strmangle.PutBuffer(joinBuf)
 	}
 
@@ -188,7 +190,8 @@ func writeModifiers(q *Query, buf *bytes.Buffer, args *[]interface{}) {
 			fmt.Fprintf(havingBuf, j.clause)
 			*args = append(*args, j.args...)
 		}
-		fmt.Fprintf(buf, convertQuestionMarks(havingBuf.String(), argsLen+1))
+		resp, _ := convertQuestionMarks(havingBuf.String(), argsLen+1)
+		fmt.Fprintf(buf, resp)
 		strmangle.PutBuffer(havingBuf)
 	}
 
@@ -267,25 +270,26 @@ func whereClause(q *Query, startAt int) (string, []interface{}) {
 	var args []interface{}
 
 	buf.WriteString(" WHERE ")
-	for i := 0; i < len(q.where); i++ {
-		buf.WriteString(fmt.Sprintf("(%s)", q.where[i].clause))
-		args = append(args, q.where[i].args...)
-
-		// break on the last loop
-		if i == len(q.where)-1 {
-			break
+	for i, where := range q.where {
+		if i != 0 {
+			if where.orSeparator {
+				buf.WriteString(" OR ")
+			} else {
+				buf.WriteString(" AND ")
+			}
 		}
 
-		if q.where[i].orSeparator {
-			buf.WriteString(" OR ")
-		} else {
-			buf.WriteString(" AND ")
-		}
+		buf.WriteString(fmt.Sprintf("(%s)", where.clause))
+		args = append(args, where.args...)
 	}
 
-	return convertQuestionMarks(buf.String(), startAt), args
+	resp, _ := convertQuestionMarks(buf.String(), startAt)
+	return resp, args
 }
 
+// inClause parses an in slice and converts it into a
+// single IN clause, like:
+// WHERE ("a", "b") IN (($1,$2),($3,$4)).
 func inClause(q *Query, startAt int) (string, []interface{}) {
 	if len(q.in) == 0 {
 		return "", nil
@@ -298,28 +302,93 @@ func inClause(q *Query, startAt int) (string, []interface{}) {
 	if len(q.where) == 0 {
 		buf.WriteString(" WHERE ")
 	}
-	for i := 0; i < len(q.in); i++ {
 
+	for i, in := range q.in {
+		ln := len(in.args)
+		// We only prefix the OR and AND separators after the first
+		// clause has been generated UNLESS there is already a where
+		// clause that we have to add on to.
+		if i != 0 || len(q.where) > 0 {
+			if in.orSeparator {
+				buf.WriteString(" OR ")
+			} else {
+				buf.WriteString(" AND ")
+			}
+		}
+
+		matches := rgxInClause.FindStringSubmatch(in.clause)
+		// If we can't find any matches attempt a simple replace with 1 group.
+		// Clauses that fit this criteria will not be able to contain ? in their
+		// column name side, however if this case is being hit then the regexp
+		// probably needs adjustment, or the user is passing in invalid clauses.
+		if matches == nil {
+			clause, count := convertInQuestionMarks(in.clause, startAt, 1, ln)
+			buf.WriteString(clause)
+			startAt = startAt + count
+		} else {
+			leftSide := strings.TrimSpace(matches[1])
+			rightSide := strings.TrimSpace(matches[2])
+			// If matches are found, we have to parse the left side (column side)
+			// of the clause to determine how many columns they are using.
+			// This number determines the groupAt for the convert function.
+			cols := strings.Split(leftSide, ",")
+			cols = strmangle.IdentQuoteSlice(cols)
+			groupAt := len(cols)
+
+			leftClause, leftCount := convertQuestionMarks(strings.Join(cols, ","), startAt)
+			rightClause, rightCount := convertInQuestionMarks(rightSide, startAt+leftCount, groupAt, ln-leftCount)
+			buf.WriteString(leftClause)
+			buf.WriteString(" IN ")
+			buf.WriteString(rightClause)
+			startAt = startAt + leftCount + rightCount
+		}
+
+		args = append(args, in.args...)
 	}
 
-	// regexp split thing so we have left side and right side
-	// split on )IN( / \sIN\s, combine them
-
-	// buf.WriteString(convertQuestionMarks(leftSide, startAt))
-	// buf.WriteString(" IN ")
-	// buf.WriteString(convertInQuestionMarks(rightSide, total, group, startAt+offset))
-
-	return "", args
+	return buf.String(), args
 }
 
-func convertInQuestionMarks(clause string, total, groupAt, startAt int) string {
-	return ""
+// convertInQuestionMarks finds the first unescaped occurence of ? and swaps it
+// with a list of numbered placeholders, starting at startAt.
+// It uses groupAt to determine how many placeholders should be in each group,
+// for example, groupAt 2 would result in: (($1,$2),($3,$4))
+// and groupAt 1 would result in ($1,$2,$3,$4)
+func convertInQuestionMarks(clause string, startAt, groupAt, total int) (string, int) {
+	if startAt == 0 || len(clause) == 0 {
+		panic("Not a valid start number.")
+	}
+
+	paramBuf := strmangle.GetBuffer()
+	defer strmangle.PutBuffer(paramBuf)
+
+	foundAt := -1
+	for i := 0; i < len(clause); i++ {
+		if (clause[i] == '?' && i == 0) || (clause[i] == '?' && clause[i-1] != '\\') {
+			foundAt = i
+			break
+		}
+	}
+
+	if foundAt == -1 {
+		return strings.Replace(clause, `\?`, "?", -1), 0
+	}
+
+	paramBuf.WriteString(clause[:foundAt])
+	paramBuf.WriteByte('(')
+	paramBuf.WriteString(strmangle.Placeholders(total, startAt, groupAt))
+	paramBuf.WriteByte(')')
+	paramBuf.WriteString(clause[foundAt+1:])
+
+	// Remove all backslashes from escaped question-marks
+	ret := strings.Replace(paramBuf.String(), `\?`, "?", -1)
+	return ret, total
 }
 
 // convertQuestionMarks converts each occurence of ? with $<number>
 // where <number> is an incrementing digit starting at startAt.
 // If question-mark (?) is escaped using back-slash (\), it will be ignored.
-func convertQuestionMarks(clause string, startAt int) string {
+func convertQuestionMarks(clause string, startAt int) (string, int) {
 	if startAt == 0 {
 		panic("Not a valid start number.")
 	}
@@ -327,6 +396,7 @@ func convertQuestionMarks(clause string, startAt int) string {
 	paramBuf := strmangle.GetBuffer()
 	defer strmangle.PutBuffer(paramBuf)
 	paramIndex := 0
+	total := 0
 
 	for {
 		if paramIndex >= len(clause) {
@@ -349,11 +419,12 @@ func convertQuestionMarks(clause string, startAt int) string {
 		}
 
 		paramBuf.WriteString(clause[:paramIndex] + fmt.Sprintf("$%d", startAt))
+		total++
 		startAt++
 		paramIndex++
 	}
 
-	return paramBuf.String()
+	return paramBuf.String(), total
 }
 
 // identifierMapping creates a map of all identifiers to potential model names
diff --git a/boil/query_builders_test.go b/boil/query_builders_test.go
index 3b31095..e2c372a 100644
--- a/boil/query_builders_test.go
+++ b/boil/query_builders_test.go
@@ -247,8 +247,8 @@ func TestWhereClause(t *testing.T) {
 		{
 			q: Query{
 				where: []where{
-					where{clause: "(a=?)", orSeparator: true},
-					where{clause: "(b=?)"},
+					where{clause: "(a=?)"},
+					where{clause: "(b=?)", orSeparator: true},
 				},
 			},
 			expect: " WHERE ((a=$1)) OR ((b=$2))",
@@ -318,11 +318,11 @@ func TestWhereClause(t *testing.T) {
 			q: Query{
 				where: []where{
 					where{clause: "a=? or b=?"},
-					where{clause: "c=? and d=?"},
+					where{clause: "c=? and d=?", orSeparator: true},
 					where{clause: "e=? or f=?"},
 				},
 			},
-			expect: " WHERE (a=$1 or b=$2) AND (c=$3 and d=$4) AND (e=$5 or f=$6)",
+			expect: " WHERE (a=$1 or b=$2) OR (c=$3 and d=$4) AND (e=$5 or f=$6)",
 		},
 	}
 
@@ -340,129 +340,132 @@ func TestInClause(t *testing.T) {
 	tests := []struct {
 		q      Query
 		expect string
+		args   []interface{}
 	}{
-		// Or("a=?")
+		{
+			q: Query{
+				in: []in{{clause: "a in ?", args: []interface{}{}, orSeparator: true}},
+			},
+			expect: ` WHERE "a" IN ()`,
+		},
 		{
 			q: Query{
 				in: []in{{clause: "a in ?", args: []interface{}{1}, orSeparator: true}},
 			},
-			expect: " WHERE a IN ($1)",
+			expect: ` WHERE "a" IN ($1)`,
+			args:   []interface{}{1},
 		},
 		{
 			q: Query{
 				in: []in{{clause: "a in ?", args: []interface{}{1, 2, 3}}},
 			},
-			expect: " WHERE a IN ($1,$2,$3)",
+			expect: ` WHERE "a" IN ($1,$2,$3)`,
+			args:   []interface{}{1, 2, 3},
+		},
+		{
+			q: Query{
+				in: []in{{clause: "? in ?", args: []interface{}{1, 2, 3}}},
+			},
+			expect: " WHERE $1 IN ($2,$3)",
+			args:   []interface{}{1, 2, 3},
+		},
+		{
+			q: Query{
+				in: []in{{clause: "( ? , ? ) in ( ? )", orSeparator: true, args: []interface{}{"a", "b", 1, 2, 3, 4}}},
+			},
+			expect: " WHERE ( $1 , $2 ) IN ( (($3,$4),($5,$6)) )",
+			args:   []interface{}{"a", "b", 1, 2, 3, 4},
+		},
+		{
+			q: Query{
+				in: []in{{clause: `("a")in(?)`, orSeparator: true, args: []interface{}{1, 2, 3}}},
+			},
+			expect: ` WHERE ("a") IN (($1,$2,$3))`,
+			args:   []interface{}{1, 2, 3},
+		},
+		{
+			q: Query{
+				in: []in{{clause: `("a")in?`, args: []interface{}{1}}},
+			},
+			expect: ` WHERE ("a") IN ($1)`,
+			args:   []interface{}{1},
+		},
+		{
+			q: Query{
+				where: []where{
+					{clause: "a=?", args: []interface{}{1}},
+				},
+				in: []in{
+					{clause: `?,?,"name" in ?`, orSeparator: true, args: []interface{}{"c", "d", 3, 4, 5, 6, 7, 8}},
+					{clause: `?,?,"name" in ?`, orSeparator: true, args: []interface{}{"e", "f", 9, 10, 11, 12, 13, 14}},
+				},
+			},
+			expect: ` OR $1,$2,"name" IN (($3,$4,$5),($6,$7,$8)) OR $9,$10,"name" IN (($11,$12,$13),($14,$15,$16))`,
+			args:   []interface{}{"c", "d", 3, 4, 5, 6, 7, 8, "e", "f", 9, 10, 11, 12, 13, 14},
+		},
+		{
+			q: Query{
+				in: []in{
+					{clause: `("a")in`, args: []interface{}{1}},
+					{clause: `("a")in?`, orSeparator: true, args: []interface{}{1}},
+				},
+			},
+			expect: ` WHERE ("a")in OR ("a") IN ($1)`,
+			args:   []interface{}{1, 1},
+		},
+		{
+			q: Query{
+				in: []in{
+					{clause: `\?,\? in \?`, args: []interface{}{1}},
+					{clause: `\?,\?in \?`, orSeparator: true, args: []interface{}{1}},
+				},
+			},
+			expect: ` WHERE ?,? IN ? OR ?,? IN ?`,
+			args:   []interface{}{1, 1},
+		},
+		{
+			q: Query{
+				in: []in{
+					{clause: `("a")in`, args: []interface{}{1}},
+					{clause: `("a") in thing`, args: []interface{}{1, 2, 3}},
+					{clause: `("a")in?`, orSeparator: true, args: []interface{}{4, 5, 6}},
+				},
+			},
+			expect: ` WHERE ("a")in AND ("a") IN thing OR ("a") IN ($1,$2,$3)`,
+			args:   []interface{}{1, 1, 2, 3, 4, 5, 6},
+		},
+		{
+			q: Query{
+				in: []in{
+					{clause: `("a")in?`, orSeparator: true, args: []interface{}{4, 5, 6}},
+					{clause: `("a") in thing`, args: []interface{}{1, 2, 3}},
+					{clause: `("a")in`, args: []interface{}{1}},
+				},
+			},
+			expect: ` WHERE ("a") IN ($1,$2,$3) AND ("a") IN thing AND ("a")in`,
+			args:   []interface{}{4, 5, 6, 1, 2, 3, 1},
+		},
+		{
+			q: Query{
+				in: []in{
+					{clause: `("a")in?`, orSeparator: true, args: []interface{}{4, 5, 6}},
+					{clause: `("a")in`, args: []interface{}{1}},
+					{clause: `("a") in thing`, args: []interface{}{1, 2, 3}},
+				},
+			},
+			expect: ` WHERE ("a") IN ($1,$2,$3) AND ("a")in AND ("a") IN thing`,
+			args:   []interface{}{4, 5, 6, 1, 1, 2, 3},
 		},
-		// // Where("a=?")
-		// {
-		// 	q: Query{
-		// 		where: []where{where{clause: "a=?"}},
-		// 	},
-		// 	expect: " WHERE (a=$1)",
-		// },
-		// // Where("(a=?)")
-		// {
-		// 	q: Query{
-		// 		where: []where{where{clause: "(a=?)"}},
-		// 	},
-		// 	expect: " WHERE ((a=$1))",
-		// },
-		// // Where("((a=? OR b=?))")
-		// {
-		// 	q: Query{
-		// 		where: []where{where{clause: "((a=? OR b=?))"}},
-		// 	},
-		// 	expect: " WHERE (((a=$1 OR b=$2)))",
-		// },
-		// // Where("(a=?)", Or("(b=?)")
-		// {
-		// 	q: Query{
-		// 		where: []where{
-		// 			where{clause: "(a=?)", orSeparator: true},
-		// 			where{clause: "(b=?)"},
-		// 		},
-		// 	},
-		// 	expect: " WHERE ((a=$1)) OR ((b=$2))",
-		// },
-		// // Where("a=? OR b=?")
-		// {
-		// 	q: Query{
-		// 		where: []where{where{clause: "a=? OR b=?"}},
-		// 	},
-		// 	expect: " WHERE (a=$1 OR b=$2)",
-		// },
-		// // Where("a=?"), Where("b=?")
-		// {
-		// 	q: Query{
-		// 		where: []where{where{clause: "a=?"}, where{clause: "b=?"}},
-		// 	},
-		// 	expect: " WHERE (a=$1) AND (b=$2)",
-		// },
-		// // Where("(a=? AND b=?) OR c=?")
-		// {
-		// 	q: Query{
-		// 		where: []where{where{clause: "(a=? AND b=?) OR c=?"}},
-		// 	},
-		// 	expect: " WHERE ((a=$1 AND b=$2) OR c=$3)",
-		// },
-		// // Where("a=? OR b=?"), Where("c=? OR d=? OR e=?")
-		// {
-		// 	q: Query{
-		// 		where: []where{
-		// 			where{clause: "(a=? OR b=?)"},
-		// 			where{clause: "(c=? OR d=? OR e=?)"},
-		// 		},
-		// 	},
-		// 	expect: " WHERE ((a=$1 OR b=$2)) AND ((c=$3 OR d=$4 OR e=$5))",
-		// },
-		// // Where("(a=? AND b=?) OR (c=? AND d=? AND e=?) OR f=? OR f=?")
-		// {
-		// 	q: Query{
-		// 		where: []where{
-		// 			where{clause: "(a=? AND b=?) OR (c=? AND d=? AND e=?) OR f=? OR g=?"},
-		// 		},
-		// 	},
-		// 	expect: " WHERE ((a=$1 AND b=$2) OR (c=$3 AND d=$4 AND e=$5) OR f=$6 OR g=$7)",
-		// },
-		// // Where("(a=? AND b=?) OR (c=? AND d=? OR e=?) OR f=? OR g=?")
-		// {
-		// 	q: Query{
-		// 		where: []where{
-		// 			where{clause: "(a=? AND b=?) OR (c=? AND d=? OR e=?) OR f=? OR g=?"},
-		// 		},
-		// 	},
-		// 	expect: " WHERE ((a=$1 AND b=$2) OR (c=$3 AND d=$4 OR e=$5) OR f=$6 OR g=$7)",
-		// },
-		// // Where("a=? or b=?"), Or("c=? and d=?"), Or("e=? or f=?")
-		// {
-		// 	q: Query{
-		// 		where: []where{
-		// 			where{clause: "a=? or b=?", orSeparator: true},
-		// 			where{clause: "c=? and d=?", orSeparator: true},
-		// 			where{clause: "e=? or f=?", orSeparator: true},
-		// 		},
-		// 	},
-		// 	expect: " WHERE (a=$1 or b=$2) OR (c=$3 and d=$4) OR (e=$5 or f=$6)",
-		// },
-		// // Where("a=? or b=?"), Or("c=? and d=?"), Or("e=? or f=?")
-		// {
-		// 	q: Query{
-		// 		where: []where{
-		// 			where{clause: "a=? or b=?"},
-		// 			where{clause: "c=? and d=?"},
-		// 			where{clause: "e=? or f=?"},
-		// 		},
-		// 	},
-		// 	expect: " WHERE (a=$1 or b=$2) AND (c=$3 and d=$4) AND (e=$5 or f=$6)",
-		// },
 	}
 
 	for i, test := range tests {
-		result, _ := inClause(&test.q, 1)
+		result, args := inClause(&test.q, 1)
 		if result != test.expect {
 			t.Errorf("%d) Mismatch between expect and result:\n%s\n%s\n", i, test.expect, result)
 		}
+		if !reflect.DeepEqual(args, test.args) {
+			t.Errorf("%d) Mismatch between expected args:\n%#v\n%#v\n", i, test.args, args)
+		}
 	}
 }
 
@@ -473,35 +476,41 @@ func TestConvertQuestionMarks(t *testing.T) {
 		clause string
 		start  int
 		expect string
+		count  int
 	}{
-		{clause: "hello friend", start: 1, expect: "hello friend"},
-		{clause: "thing=?", start: 2, expect: "thing=$2"},
-		{clause: "thing=? and stuff=? and happy=?", start: 2, expect: "thing=$2 and stuff=$3 and happy=$4"},
-		{clause: `thing \? stuff`, start: 2, expect: `thing ? stuff`},
-		{clause: `thing \? stuff and happy \? fun`, start: 2, expect: `thing ? stuff and happy ? fun`},
+		{clause: "hello friend", start: 1, expect: "hello friend", count: 0},
+		{clause: "thing=?", start: 2, expect: "thing=$2", count: 1},
+		{clause: "thing=? and stuff=? and happy=?", start: 2, expect: "thing=$2 and stuff=$3 and happy=$4", count: 3},
+		{clause: `thing \? stuff`, start: 2, expect: `thing ? stuff`, count: 0},
+		{clause: `thing \? stuff and happy \? fun`, start: 2, expect: `thing ? stuff and happy ? fun`, count: 0},
 		{
 			clause: `thing \? stuff ? happy \? and mad ? fun \? \? \?`,
 			start:  2,
 			expect: `thing ? stuff $2 happy ? and mad $3 fun ? ? ?`,
+			count:  2,
 		},
 		{
 			clause: `thing ? stuff ? happy \? fun \? ? ?`,
 			start:  1,
 			expect: `thing $1 stuff $2 happy ? fun ? $3 $4`,
+			count:  4,
 		},
-		{clause: `?`, start: 1, expect: `$1`},
-		{clause: `???`, start: 1, expect: `$1$2$3`},
+		{clause: `?`, start: 1, expect: `$1`, count: 1},
+		{clause: `???`, start: 1, expect: `$1$2$3`, count: 3},
 		{clause: `\?`, start: 1, expect: `?`},
 		{clause: `\?\?\?`, start: 1, expect: `???`},
-		{clause: `\??\??\??`, start: 1, expect: `?$1?$2?$3`},
-		{clause: `?\??\??\?`, start: 1, expect: `$1?$2?$3?`},
+		{clause: `\??\??\??`, start: 1, expect: `?$1?$2?$3`, count: 3},
+		{clause: `?\??\??\?`, start: 1, expect: `$1?$2?$3?`, count: 3},
 	}
 
 	for i, test := range tests {
-		res := convertQuestionMarks(test.clause, test.start)
+		res, count := convertQuestionMarks(test.clause, test.start)
 		if res != test.expect {
 			t.Errorf("%d) Mismatch between expect and result:\n%s\n%s\n", i, test.expect, res)
 		}
+		if count != test.count {
+			t.Errorf("%d) Expected count %d, got %d", i, test.count, count)
+		}
 	}
 }
 
@@ -511,36 +520,34 @@ func TestConvertInQuestionMarks(t *testing.T) {
 	tests := []struct {
 		clause string
 		start  int
+		group  int
+		total  int
 		expect string
 	}{
-		{clause: "hello friend", start: 1, expect: "hello friend"},
-		{clause: "thing=?", start: 2, expect: "thing=$2"},
-		{clause: "thing=? and stuff=? and happy=?", start: 2, expect: "thing=$2 and stuff=$3 and happy=$4"},
-		{clause: `thing \? stuff`, start: 2, expect: `thing ? stuff`},
-		{clause: `thing \? stuff and happy \? fun`, start: 2, expect: `thing ? stuff and happy ? fun`},
-		{
-			clause: `thing \? stuff ? happy \? and mad ? fun \? \? \?`,
-			start:  2,
-			expect: `thing ? stuff $2 happy ? and mad $3 fun ? ? ?`,
-		},
-		{
-			clause: `thing ? stuff ? happy \? fun \? ? ?`,
-			start:  1,
-			expect: `thing $1 stuff $2 happy ? fun ? $3 $4`,
-		},
-		{clause: `?`, start: 1, expect: `$1`},
-		{clause: `???`, start: 1, expect: `$1$2$3`},
-		{clause: `\?`, start: 1, expect: `?`},
-		{clause: `\?\?\?`, start: 1, expect: `???`},
-		{clause: `\??\??\??`, start: 1, expect: `?$1?$2?$3`},
-		{clause: `?\??\??\?`, start: 1, expect: `$1?$2?$3?`},
+		{clause: "?", expect: "(($1,$2,$3),($4,$5,$6),($7,$8,$9))", start: 1, total: 9, group: 3},
+		{clause: "?", expect: "(($2,$3),($4))", start: 2, total: 3, group: 2},
+		{clause: "hello friend", start: 1, expect: "hello friend", total: 0, group: 1},
+		{clause: "thing ? thing", start: 2, expect: "thing ($2,$3) thing", total: 2, group: 1},
+		{clause: "thing?thing", start: 2, expect: "thing($2)thing", total: 1, group: 1},
+		{clause: `thing \? stuff`, start: 2, expect: `thing ? stuff`, total: 0, group: 1},
+		{clause: `thing \? stuff and happy \? fun`, start: 2, expect: `thing ? stuff and happy ? fun`, total: 0, group: 1},
+		{clause: "thing ? thing ? thing", start: 1, expect: "thing ($1,$2,$3) thing ? thing", total: 3, group: 1},
+		{clause: `?`, start: 1, expect: `($1)`, total: 1, group: 1},
+		{clause: `???`, start: 1, expect: `($1,$2,$3)??`, total: 3, group: 1},
+		{clause: `\?`, start: 1, expect: `?`, total: 0, group: 1},
+		{clause: `\?\?\?`, start: 1, expect: `???`, total: 0, group: 1},
+		{clause: `\??\??\??`, start: 1, expect: `?($1,$2,$3)????`, total: 3, group: 1},
+		{clause: `?\??\??\?`, start: 1, expect: `($1,$2,$3)?????`, total: 3, group: 1},
 	}
 
 	for i, test := range tests {
-		res := convertQuestionMarks(test.clause, test.start)
+		res, count := convertInQuestionMarks(test.clause, test.start, test.group, test.total)
 		if res != test.expect {
 			t.Errorf("%d) Mismatch between expect and result:\n%s\n%s\n", i, test.expect, res)
 		}
+		if count != test.total {
+			t.Errorf("%d) Expected %d, got %d", i, test.total, count)
+		}
 	}
 }
 
diff --git a/strmangle/strmangle.go b/strmangle/strmangle.go
index 56206ef..703c304 100644
--- a/strmangle/strmangle.go
+++ b/strmangle/strmangle.go
@@ -237,7 +237,7 @@ func PrefixStringSlice(str string, strs []string) []string {
 }
 
 // Placeholders generates the SQL statement placeholders for in queries.
-// For example, ($1, $2, $3), ($4, $5, $6) etc.
+// For example, ($1,$2,$3),($4,$5,$6) etc.
 // It will start counting placeholders at "start".
 func Placeholders(count int, start int, group int) string {
 	buf := GetBuffer()