persist and compare yaml for gating

store/datastore/sql/postgres/sql_gen.go

@@ -6,6 +6,8 @@ func Lookup(name string) string {
 }
 
 var index = map[string]string{
+	"config-find-id":            configFindId,
+	"config-find-repo-hash":     configFindRepoHash,
 	"count-users":               countUsers,
 	"count-repos":               countRepos,
 	"count-builds":              countBuilds,
@@ -33,6 +35,29 @@ var index = map[string]string{
 	"task-delete":               taskDelete,
 }
 
+var configFindId = `
+SELECT
+ config_id
+,config_repo_id
+,config_hash
+,config_data
+,config_approved
+FROM config
+WHERE config_id = $1
+`
+
+var configFindRepoHash = `
+SELECT
+ config_id
+,config_repo_id
+,config_hash
+,config_data
+,config_approved
+FROM config
+WHERE config_repo_id = $1
+  AND config_hash    = $2
+`
+
 var countUsers = `
 SELECT reltuples
 FROM pg_class WHERE relname = 'users';