fix(codegen/golang) type inference in array comparisons

Author: cmkqwerty

internal/codegen/golang/query.go

@@ -19,7 +19,8 @@ type QueryValue struct {
 
 	// Column is kept so late in the generation process around to differentiate
 	// between mysql slices and pg arrays
-	Column *plugin.Column
+	Column    *plugin.Column
+	QueryText string
 }
 
 func (v QueryValue) EmitStruct() bool {
@@ -84,6 +85,9 @@ func (v QueryValue) SlicePair() string {
 
 func (v QueryValue) Type() string {
 	if v.Typ != "" {
+		if v.isUsedWithArrayComparison() {
+			return strings.Trim(v.Typ, "[]") // Return single type if used in array comparison.
+		}
 		return v.Typ
 	}
 	if v.Struct != nil {
@@ -112,6 +116,9 @@ func (v QueryValue) UniqueFields() []Field {
 	fields := make([]Field, 0, len(v.Struct.Fields))
 
 	for _, field := range v.Struct.Fields {
+		if v.isUsedWithArrayComparison() {
+			field.Type = strings.Trim(field.Type, "[]")
+		}
 		if _, found := seen[field.Name]; found {
 			continue
 		}
@@ -128,14 +135,14 @@ func (v QueryValue) Params() string {
 	}
 	var out []string
 	if v.Struct == nil {
-		if !v.Column.IsSqlcSlice && strings.HasPrefix(v.Typ, "[]") && v.Typ != "[]byte" && !v.SQLDriver.IsPGX() {
+		if !v.Column.IsSqlcSlice && strings.HasPrefix(v.Typ, "[]") && v.Typ != "[]byte" && !v.SQLDriver.IsPGX() && !v.isUsedWithArrayComparison() {
 			out = append(out, "pq.Array("+escape(v.Name)+")")
 		} else {
 			out = append(out, escape(v.Name))
 		}
 	} else {
 		for _, f := range v.Struct.Fields {
-			if !f.HasSqlcSlice() && strings.HasPrefix(f.Type, "[]") && f.Type != "[]byte" && !v.SQLDriver.IsPGX() {
+			if !f.HasSqlcSlice() && strings.HasPrefix(f.Type, "[]") && f.Type != "[]byte" && !v.SQLDriver.IsPGX() && !v.isUsedWithArrayComparison() {
 				out = append(out, "pq.Array("+escape(v.VariableForField(f))+")")
 			} else {
 				out = append(out, escape(v.VariableForField(f)))
@@ -253,6 +260,22 @@ func (v QueryValue) VariableForField(f Field) string {
 	return v.Name + "." + f.Name
 }
 
+// isUsedWithArrayComparison returns true if the parameter is used with the ANY/SOME/ALL keyword in query.
+func (v QueryValue) isUsedWithArrayComparison() bool {
+	if v.Struct != nil {
+		for _, f := range v.Struct.Fields {
+			if strings.Contains(v.QueryText, fmt.Sprintf("ANY(%s)", f.DBName)) || strings.Contains(v.QueryText, fmt.Sprintf("SOME(%s)", f.DBName)) || strings.Contains(v.QueryText, fmt.Sprintf("ALL(%s)", f.DBName)) {
+				return true
+			}
+		}
+	} else {
+		if strings.Contains(v.QueryText, fmt.Sprintf("ANY(%s)", v.DBName)) || strings.Contains(v.QueryText, fmt.Sprintf("SOME(%s)", v.DBName)) || strings.Contains(v.QueryText, fmt.Sprintf("ALL(%s)", v.DBName)) {
+			return true
+		}
+	}
+	return false
+}
+
 // A struct used to generate methods and fields on the Queries struct
 type Query struct {
 	Cmd          string

internal/codegen/golang/result.go

@@ -221,6 +221,7 @@ func buildQueries(req *plugin.GenerateRequest, options *opts.Options, structs []
 				Typ:       goType(req, options, p.Column),
 				SQLDriver: sqlpkg,
 				Column:    p.Column,
+				QueryText: gq.SQL,
 			}
 		} else if len(query.Params) >= 1 {
 			var cols []goColumn
@@ -240,6 +241,7 @@ func buildQueries(req *plugin.GenerateRequest, options *opts.Options, structs []
 				Struct:      s,
 				SQLDriver:   sqlpkg,
 				EmitPointer: options.EmitParamsStructPointers,
+				QueryText:   gq.SQL,
 			}
 
 			if len(query.Params) <= qpl {