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-rw-r--r--src/postgres.sml4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/postgres.sml b/src/postgres.sml
index 41529173..272097e7 100644
--- a/src/postgres.sml
+++ b/src/postgres.sml
@@ -402,11 +402,11 @@ fun init {dbstring, prepared = ss, tables, views, sequences} =
newline,
newline,
- string "static int uw_db_begin(uw_context ctx) {",
+ string "static int uw_db_begin(uw_context ctx, int could_write) {",
newline,
string "PGconn *conn = uw_get_db(ctx);",
newline,
- string "PGresult *res = PQexec(conn, \"BEGIN ISOLATION LEVEL SERIALIZABLE\");",
+ string "PGresult *res = PQexec(conn, could_write ? \"BEGIN ISOLATION LEVEL SERIALIZABLE\" : \"BEGIN ISOLATION LEVEL SERIALIZABLE, READ ONLY\");",
newline,
newline,
string "if (res == NULL) return 1;",