diff --git a/src/Postgres/Library.fs b/src/Postgres/Library.fs
index 2d755e9..32aa352 100644
--- a/src/Postgres/Library.fs
+++ b/src/Postgres/Library.fs
@@ -62,31 +62,47 @@ module Parameters =
     [<CompiledName "Json">]
     let jsonParam (name: string) (it: 'TJson) =
         name, Sql.jsonb (Configuration.serializer().Serialize it)
+    
+    /// Convert the fields to their parameters
+    let private convertFieldsToParameters fields =
+        let name = ParameterName()
+        fields
+        |> Seq.map (fun it ->
+            seq {
+                match it.Op with
+                | EX | NEX -> ()
+                | BT ->
+                    let p      = name.Derive it.ParameterName
+                    let values = it.Value :?> obj list
+                    yield ($"{p}min", Sql.parameter (NpgsqlParameter($"{p}min", List.head values)))
+                    yield ($"{p}max", Sql.parameter (NpgsqlParameter($"{p}max", List.last values)))
+                | _ ->
+                    let p = name.Derive it.ParameterName
+                    yield (p, Sql.parameter (NpgsqlParameter(p, it.Value))) })
+        |> Seq.collect id
+        
+    /// Create JSON field parameters
+    [<CompiledName "FSharpAddFields">]
+    let addFieldParams (fields: Field list) parameters =
+        convertFieldsToParameters fields
+        |> Seq.toList
+        |> List.append parameters
+
+    /// Create JSON field parameters
+    let AddFields fields parameters =
+        convertFieldsToParameters fields
+        |> Seq.append parameters
 
     /// Create a JSON field parameter
     [<CompiledName "FSharpAddField">]
+    [<System.Obsolete "Use addFieldParams instead; will be removed in v4">]
     let addFieldParam name field parameters =
-        match field.Op with
-        | EX | NEX -> parameters
-        | BT ->
-            let values = field.Value :?> obj list
-            List.concat
-                [ parameters
-                  [ ($"{name}min", Sql.parameter (NpgsqlParameter($"{name}min", List.head values)))
-                    ($"{name}max", Sql.parameter (NpgsqlParameter($"{name}max", List.last values))) ] ]
-        | _ -> (name, Sql.parameter (NpgsqlParameter(name, field.Value))) :: parameters
+        addFieldParams [ { field with ParameterName = Some name } ] parameters
 
     /// Create a JSON field parameter
+    [<System.Obsolete "Use AddFields instead; will be removed in v4">]
     let AddField name field parameters =
-        match field.Op with
-        | EX | NEX -> parameters
-        | BT ->
-            let values = field.Value :?> obj list
-            ResizeArray
-                [ ($"{name}min", Sql.parameter (NpgsqlParameter($"{name}min", List.head values)))
-                  ($"{name}max", Sql.parameter (NpgsqlParameter($"{name}max", List.last values))) ]
-            |> Seq.append parameters
-        | _ -> (name, Sql.parameter (NpgsqlParameter(name, field.Value))) |> Seq.singleton |> Seq.append parameters
+        AddFields [ { field with ParameterName = Some name } ] parameters
 
     /// Append JSON field name parameters for the given field names to the given parameters
     [<CompiledName "FSharpFieldName">]
@@ -134,7 +150,7 @@ module Query =
     
     /// Create a WHERE clause fragment to implement a comparison on a field in a JSON document
     [<CompiledName "WhereByField">]
-    //[<Obsolete "Use whereByFields / WhereByFields instead">]
+    [<System.Obsolete "Use WhereByFields instead; will be removed in v4">]
     let whereByField field paramName =
         whereByFields [ { field with ParameterName = Some paramName } ] Any
     
@@ -184,7 +200,8 @@ module Query =
         /// Query to count matching documents using a text comparison on a JSON field
         [<CompiledName "ByField">]
         let byField tableName field =
-            $"""SELECT COUNT(*) AS it FROM %s{tableName} WHERE {whereByField field "@field"}"""
+            whereByFields [ { field with ParameterName = Some "@field" } ] Any
+            |> sprintf "SELECT COUNT(*) AS it FROM %s WHERE %s" tableName
         
         /// Query to count matching documents using a JSON containment query (@>)
         [<CompiledName "ByContains">]
@@ -207,7 +224,8 @@ module Query =
         /// Query to determine if documents exist using a comparison on a JSON field
         [<CompiledName "ByField">]
         let byField tableName field =
-            $"""SELECT EXISTS (SELECT 1 FROM %s{tableName} WHERE {whereByField field "@field"}) AS it"""
+            whereByFields [ { field with ParameterName = Some "@field" } ] Any
+            |> sprintf "SELECT EXISTS (SELECT 1 FROM %s WHERE %s) AS it" tableName
         
         /// Query to determine if documents exist using a JSON containment query (@>)
         [<CompiledName "ByContains">]
@@ -230,7 +248,8 @@ module Query =
         /// Query to retrieve documents using a comparison on a JSON field
         [<CompiledName "ByField">]
         let byField tableName field =
-            $"""{Query.selectFromTable tableName} WHERE {whereByField field "@field"}"""
+            whereByFields [ { field with ParameterName = Some "@field" } ] Any
+            |> sprintf "%s WHERE %s" (Query.selectFromTable tableName)
         
         /// Query to retrieve documents using a JSON containment query (@>)
         [<CompiledName "ByContains">]
@@ -257,7 +276,7 @@ module Query =
         /// Query to patch documents match a JSON field comparison (->> =)
         [<CompiledName "ByField">]
         let byField tableName field =
-            whereByField field "@field" |> update tableName
+            whereByFields [ { field with ParameterName = Some "@field" } ] Any |> update tableName
         
         /// Query to patch documents matching a JSON containment query (@>)
         [<CompiledName "ByContains">]
@@ -284,7 +303,7 @@ module Query =
         /// Query to remove fields from documents via a comparison on a JSON field within the document
         [<CompiledName "ByField">]
         let byField tableName field =
-            whereByField field "@field" |> update tableName
+            whereByFields [ { field with ParameterName = Some "@field" } ] Any |> update tableName
         
         /// Query to patch documents matching a JSON containment query (@>)
         [<CompiledName "ByContains">]
@@ -307,7 +326,8 @@ module Query =
         /// Query to delete documents using a comparison on a JSON field
         [<CompiledName "ByField">]
         let byField tableName field =
-            $"""DELETE FROM %s{tableName} WHERE {whereByField field "@field"}"""
+            whereByFields [ { field with ParameterName = Some "@field" } ] Any
+            |> sprintf "DELETE FROM %s WHERE %s" tableName
         
         /// Query to delete documents using a JSON containment query (@>)
         [<CompiledName "ByContains">]
@@ -444,7 +464,11 @@ module WithProps =
         /// Count matching documents using a JSON field comparison (->> =)
         [<CompiledName "ByField">]
         let byField tableName field sqlProps =
-            Custom.scalar (Query.Count.byField tableName field) (addFieldParam "@field" field []) toCount sqlProps
+            Custom.scalar
+                (Query.Count.byField tableName field)
+                (addFieldParams [ { field with ParameterName = Some "@field" } ] [])
+                toCount
+                sqlProps
         
         /// Count matching documents using a JSON containment query (@>)
         [<CompiledName "ByContains">]
@@ -468,7 +492,11 @@ module WithProps =
         /// Determine if a document exists using a JSON field comparison (->> =)
         [<CompiledName "ByField">]
         let byField tableName field sqlProps =
-            Custom.scalar (Query.Exists.byField tableName field) (addFieldParam "@field" field []) toExists sqlProps
+            Custom.scalar
+                (Query.Exists.byField tableName field)
+                (addFieldParams [ { field with ParameterName = Some "@field" } ] [])
+                toExists
+                sqlProps
         
         /// Determine if a document exists using a JSON containment query (@>)
         [<CompiledName "ByContains">]
@@ -506,12 +534,18 @@ module WithProps =
         [<CompiledName "FSharpByField">]
         let byField<'TDoc> tableName field sqlProps =
             Custom.list<'TDoc>
-                (Query.Find.byField tableName field) (addFieldParam "@field" field []) fromData<'TDoc> sqlProps
+                (Query.Find.byField tableName field)
+                (addFieldParams [ { field with ParameterName = Some "@field" } ] [])
+                fromData<'TDoc>
+                sqlProps
         
         /// Retrieve documents matching a JSON field comparison (->> =)
         let ByField<'TDoc>(tableName, field, sqlProps) =
             Custom.List<'TDoc>(
-                Query.Find.byField tableName field, addFieldParam "@field" field [], fromData<'TDoc>, sqlProps)
+                Query.Find.byField tableName field,
+                addFieldParams [ { field with ParameterName = Some "@field" } ] [],
+                fromData<'TDoc>,
+                sqlProps)
         
         /// Retrieve documents matching a JSON containment query (@>)
         [<CompiledName "FSharpByContains">]
@@ -540,7 +574,7 @@ module WithProps =
         let firstByField<'TDoc> tableName field sqlProps =
             Custom.single<'TDoc>
                 $"{Query.Find.byField tableName field} LIMIT 1"
-                (addFieldParam "@field" field [])
+                (addFieldParams [ { field with ParameterName = Some "@field" } ] [])
                 fromData<'TDoc>
                 sqlProps
             
@@ -548,7 +582,7 @@ module WithProps =
         let FirstByField<'TDoc when 'TDoc: null>(tableName, field, sqlProps) =
             Custom.Single<'TDoc>(
                 $"{Query.Find.byField tableName field} LIMIT 1",
-                addFieldParam "@field" field [],
+                addFieldParams [ { field with ParameterName = Some "@field" } ] [],
                 fromData<'TDoc>,
                 sqlProps)
             
@@ -612,7 +646,7 @@ module WithProps =
         let byField tableName field (patch: 'TPatch) sqlProps =
             Custom.nonQuery
                 (Query.Patch.byField tableName field)
-                (addFieldParam "@field" field [ jsonParam "@data" patch ])
+                (addFieldParams [ { field with ParameterName = Some "@field" } ] [ jsonParam "@data" patch ])
                 sqlProps
         
         /// Patch documents using a JSON containment query in the WHERE clause (@>)
@@ -645,7 +679,7 @@ module WithProps =
         let byField tableName field fieldNames sqlProps =
             Custom.nonQuery
                 (Query.RemoveFields.byField tableName field)
-                (addFieldParam "@field" field [ fieldNameParam fieldNames ])
+                (addFieldParams [ { field with ParameterName = Some "@field" } ] [ fieldNameParam fieldNames ])
                 sqlProps
         
         /// Remove fields from documents via a comparison on a JSON field in the document
@@ -688,7 +722,10 @@ module WithProps =
         /// Delete documents by matching a JSON field comparison query (->> =)
         [<CompiledName "ByField">]
         let byField tableName field sqlProps =
-            Custom.nonQuery (Query.Delete.byField tableName field) (addFieldParam "@field" field []) sqlProps
+            Custom.nonQuery
+                (Query.Delete.byField tableName field)
+                (addFieldParams [ { field with ParameterName = Some "@field" } ] [])
+                sqlProps
         
         /// Delete documents by matching a JSON contains query (@>)
         [<CompiledName "ByContains">]
diff --git a/src/Sqlite/Library.fs b/src/Sqlite/Library.fs
index cec835d..90a8520 100644
--- a/src/Sqlite/Library.fs
+++ b/src/Sqlite/Library.fs
@@ -51,6 +51,7 @@ module Query =
 
     /// Create a WHERE clause fragment to implement a comparison on a field in a JSON document
     [<CompiledName "WhereByField">]
+    [<System.Obsolete "Use WhereByFields instead; will be removed in v4">]
     let whereByField field paramName =
         whereByFields [ { field with ParameterName = Some paramName } ] Any
     
@@ -83,7 +84,8 @@ module Query =
         /// Query to count matching documents using a text comparison on a JSON field
         [<CompiledName "ByField">]
         let byField tableName field =
-            $"""SELECT COUNT(*) AS it FROM %s{tableName} WHERE {whereByField field "@field"}"""
+            whereByFields [ { field with ParameterName = Some "@field" } ] Any
+            |> sprintf "SELECT COUNT(*) AS it FROM %s WHERE %s" tableName
         
     /// Queries for determining document existence
     module Exists =
@@ -96,7 +98,8 @@ module Query =
         /// Query to determine if documents exist using a comparison on a JSON field
         [<CompiledName "ByField">]
         let byField tableName field =
-            $"""SELECT EXISTS (SELECT 1 FROM %s{tableName} WHERE {whereByField field "@field"}) AS it"""
+            whereByFields [ { field with ParameterName = Some "@field" } ] Any
+            |> sprintf "SELECT EXISTS (SELECT 1 FROM %s WHERE %s) AS it" tableName
         
     /// Queries for retrieving documents
     module Find =
@@ -109,7 +112,8 @@ module Query =
         /// Query to retrieve documents using a comparison on a JSON field
         [<CompiledName "ByField">]
         let byField tableName field =
-            $"""{Query.selectFromTable tableName} WHERE {whereByField field "@field"}"""
+            whereByFields [ { field with ParameterName = Some "@field" } ] Any
+            |> sprintf "%s WHERE %s" (Query.selectFromTable tableName)
         
     /// Document patching (partial update) queries
     module Patch =
@@ -126,7 +130,7 @@ module Query =
         /// Query to patch (partially update) a document via a comparison on a JSON field
         [<CompiledName "ByField">]
         let byField tableName field =
-            whereByField field "@field" |> update tableName
+            whereByFields [ { field with ParameterName = Some "@field" } ] Any |> update tableName
     
     /// Queries to remove fields from documents
     module RemoveFields =
@@ -148,7 +152,7 @@ module Query =
         /// Query to remove fields from documents via a comparison on a JSON field within the document
         [<CompiledName "FSharpByField">]
         let byField tableName field parameters =
-            whereByField field "@field" |> update tableName parameters
+            whereByFields [ { field with ParameterName = Some "@field" } ] Any |> update tableName parameters
         
         /// Query to remove fields from documents via a comparison on a JSON field within the document
         let ByField(tableName, field, parameters) =
@@ -165,7 +169,8 @@ module Query =
         /// Query to delete documents using a comparison on a JSON field
         [<CompiledName "ByField">]
         let byField tableName field =
-            $"""DELETE FROM %s{tableName} WHERE {whereByField field "@field"}"""
+            whereByFields [ { field with ParameterName = Some "@field" } ] Any
+            |> sprintf "DELETE FROM %s WHERE %s" tableName
         
 
 /// Parameter handling helpers
@@ -182,30 +187,44 @@ module Parameters =
     let jsonParam name (it: 'TJson) =
         SqliteParameter(name, Configuration.serializer().Serialize it)
 
+    /// Convert the fields to their parameters
+    let private convertFieldsToParameters fields =
+        let name = ParameterName()
+        fields
+        |> Seq.map (fun it ->
+            seq {
+                match it.Op with
+                | EX | NEX -> ()
+                | BT ->
+                    let p      = name.Derive it.ParameterName
+                    let values = it.Value :?> obj list
+                    yield SqliteParameter($"{p}min", List.head values)
+                    yield SqliteParameter($"{p}max", List.last values)
+                | _ -> yield SqliteParameter(name.Derive it.ParameterName, it.Value) })
+        |> Seq.collect id
+        
+    /// Create JSON field parameters
+    [<CompiledName "FSharpAddFields">]
+    let addFieldParams (fields: Field list) parameters =
+        convertFieldsToParameters fields
+        |> Seq.toList
+        |> List.append parameters
+
+    /// Create JSON field parameters
+    let AddFields fields parameters =
+        convertFieldsToParameters fields
+        |> Seq.append parameters
+
     /// Create a JSON field parameter (name "@field")
     [<CompiledName "FSharpAddField">]
+    [<System.Obsolete "Use addFieldParams instead; will be removed in v4">]
     let addFieldParam name field parameters =
-        match field.Op with
-        | EX | NEX -> parameters
-        | BT ->
-            let values = field.Value :?> obj list
-            SqliteParameter($"{name}min", values[0]) :: SqliteParameter($"{name}max", values[1]) :: parameters
-        | _ -> SqliteParameter(name, field.Value) :: parameters
+        addFieldParams [ { field with ParameterName = Some name } ] parameters
     
     /// Create a JSON field parameter (name "@field")
+    [<System.Obsolete "Use AddFields instead; will be removed in v4">]
     let AddField(name, field, parameters) =
-        match field.Op with
-        | EX | NEX -> parameters
-        | BT ->
-            let values = field.Value :?> obj list
-            // let min = SqliteParameter($"{name}min", SqliteType.Integer)
-            // min.Value <- values[0]
-            // let max = SqliteParameter($"{name}max", SqliteType.Integer)
-            // max.Value <- values[1]
-            [ SqliteParameter($"{name}min", values[0]); SqliteParameter($"{name}max", values[1]) ]
-            // [min; max]
-            |> Seq.append parameters
-        | _ -> SqliteParameter(name, field.Value) |> Seq.singleton |> Seq.append parameters
+        AddFields [ { field with ParameterName = Some name } ] parameters
 
     /// Append JSON field name parameters for the given field names to the given parameters
     [<CompiledName "FSharpFieldNames">]
@@ -366,7 +385,11 @@ module WithConn =
         /// Count matching documents using a comparison on a JSON field
         [<CompiledName "ByField">]
         let byField tableName field conn =
-            Custom.scalar (Query.Count.byField tableName field) (addFieldParam "@field" field []) toCount conn
+            Custom.scalar
+                (Query.Count.byField tableName field)
+                (addFieldParams [ { field with ParameterName = Some "@field" } ] [])
+                toCount
+                conn
 
     /// Commands to determine if documents exist
     [<RequireQualifiedAccess>]
@@ -380,7 +403,11 @@ module WithConn =
         /// Determine if a document exists using a comparison on a JSON field
         [<CompiledName "ByField">]
         let byField tableName field conn =
-            Custom.scalar (Query.Exists.byField tableName field) (addFieldParam "@field" field []) toExists conn
+            Custom.scalar
+                (Query.Exists.byField tableName field)
+                (addFieldParams [ { field with ParameterName = Some "@field" } ] [])
+                toExists
+                conn
     
     /// Commands to retrieve documents
     [<RequireQualifiedAccess>]
@@ -408,23 +435,35 @@ module WithConn =
         [<CompiledName "FSharpByField">]
         let byField<'TDoc> tableName field conn =
             Custom.list<'TDoc>
-                (Query.Find.byField tableName field) (addFieldParam "@field" field []) fromData<'TDoc> conn 
+                (Query.Find.byField tableName field)
+                (addFieldParams [ { field with ParameterName = Some "@field" } ] [])
+                fromData<'TDoc>
+                conn 
         
         /// Retrieve documents via a comparison on a JSON field
         let ByField<'TDoc>(tableName, field, conn) =
             Custom.List<'TDoc>(
-                Query.Find.byField tableName field, addFieldParam "@field" field [], fromData<'TDoc>, conn) 
+                Query.Find.byField tableName field,
+                addFieldParams [ { field with ParameterName = Some "@field" } ] [],
+                fromData<'TDoc>,
+                conn) 
         
         /// Retrieve documents via a comparison on a JSON field, returning only the first result
         [<CompiledName "FSharpFirstByField">]
         let firstByField<'TDoc> tableName field conn =
             Custom.single
-                $"{Query.Find.byField tableName field} LIMIT 1" (addFieldParam "@field" field []) fromData<'TDoc> conn
+                $"{Query.Find.byField tableName field} LIMIT 1"
+                (addFieldParams [ { field with ParameterName = Some "@field" } ] [])
+                fromData<'TDoc>
+                conn
         
         /// Retrieve documents via a comparison on a JSON field, returning only the first result
         let FirstByField<'TDoc when 'TDoc: null>(tableName, field, conn) =
             Custom.Single(
-                $"{Query.Find.byField tableName field} LIMIT 1", addFieldParam "@field" field [], fromData<'TDoc>, conn)
+                $"{Query.Find.byField tableName field} LIMIT 1",
+                addFieldParams [ { field with ParameterName = Some "@field" } ] [],
+                fromData<'TDoc>,
+                conn)
     
     /// Commands to update documents
     [<RequireQualifiedAccess>]
@@ -457,7 +496,9 @@ module WithConn =
         [<CompiledName "ByField">]
         let byField tableName field (patch: 'TPatch) (conn: SqliteConnection) =
             Custom.nonQuery
-                (Query.Patch.byField tableName field) (addFieldParam "@field" field [ jsonParam "@data" patch ]) conn
+                (Query.Patch.byField tableName field)
+                (addFieldParams [ { field with ParameterName = Some "@field" } ] [ jsonParam "@data" patch ])
+                conn
 
     /// Commands to remove fields from documents
     [<RequireQualifiedAccess>]
@@ -478,7 +519,9 @@ module WithConn =
         let byField tableName field fieldNames conn =
             let nameParams = fieldNameParams "@name" fieldNames
             Custom.nonQuery
-                (Query.RemoveFields.byField tableName field nameParams) (addFieldParam "@field" field nameParams) conn
+                (Query.RemoveFields.byField tableName field nameParams)
+                (addFieldParams [ { field with ParameterName = Some "@field" } ] nameParams)
+                conn
         
         /// Remove fields from documents via a comparison on a JSON field in the document
         let ByField(tableName, field, fieldNames, conn) =
@@ -496,7 +539,10 @@ module WithConn =
         /// Delete documents by matching a comparison on a JSON field
         [<CompiledName "ByField">]
         let byField tableName field conn =
-            Custom.nonQuery (Query.Delete.byField tableName field) (addFieldParam "@field" field []) conn
+            Custom.nonQuery
+                (Query.Delete.byField tableName field)
+                (addFieldParams [ { field with ParameterName = Some "@field" } ] [])
+                conn
 
 
 /// Commands to execute custom SQL queries