postgres and sqlite increment

lib/dialects/postgres/query-generator.js

@@ -357,6 +357,27 @@ module.exports = (function() {
       return Utils._.template(query)(replacements)
     },
 
+    incrementQuery: function(tableName, attrValueHash, where) {
+      attrValueHash = Utils.removeNullValuesFromHash(attrValueHash, this.options.omitNull)
+
+      var query  = "UPDATE <%= table %> SET <%= values %> WHERE <%= where %> RETURNING *"
+        , values = []
+
+      for (var key in attrValueHash) {
+        var value = attrValueHash[key]
+        values.push(addQuotes(key) + "=" + addQuotes(key) + pgEscape(value))
+      }
+
+      var replacements = {
+        table: addQuotes(tableName),
+        values: values.join(","),
+        where: QueryGenerator.getWhereConditions(where)
+      }
+
+      return Utils._.template(query)(replacements)
+    },
+
+
     addIndexQuery: function(tableName, attributes, options) {
       var transformedAttributes = attributes.map(function(attribute) {
         if (typeof attribute === 'string') {

lib/dialects/query-generator.js

@@ -144,6 +144,20 @@ module.exports = (function() {
     },
 
     /*
+      Returns an update query.
+      Parameters:
+        - tableName -> Name of the table
+        - values -> A hash with attribute-value-pairs
+        - where -> A hash with conditions (e.g. {name: 'foo'})
+                   OR an ID as integer
+                   OR a string with conditions (e.g. 'name="foo"').
+                   If you use a string, you have to escape it on your own.
+    */
+    incrementQuery: function(tableName, values, where) {
+      throwMethodUndefined('incrementQuery')
+    },
+
+    /*
       Returns an add index query.
       Parameters:
         - tableName -> Name of an existing table.

lib/dialects/sqlite/query-generator.js

@@ -113,6 +113,26 @@ module.exports = (function() {
       return Utils._.template(query)(replacements)
     },
 
+    incrementQuery: function(tableName, attrValueHash, where) {
+      attrValueHash = Utils.removeNullValuesFromHash(attrValueHash, this.options.omitNull)
+
+      var query  = "UPDATE <%= table %> SET <%= values %> WHERE <%= where %>"
+        , values = []
+
+      for (var key in attrValueHash) {
+        var value = attrValueHash[key]
+        values.push(Utils.addTicks(key) + "=" + Utils.addTicks(key) + escape((value instanceof Date) ? Utils.toSqlDate(value) : value))
+      }
+
+      var replacements = {
+        table: Utils.addTicks(tableName),
+        values: values.join(","),
+        where: MySqlQueryGenerator.getWhereConditions(where)
+      }
+
+      return Utils._.template(query)(replacements)
+    },
+
     attributesToSQL: function(attributes) {
       var result = {}