Limit the number of columns involved in an index to 12 or less.

Some databases simply does not support that many columns.

Author: kennytm

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "dbgen"
-version = "0.3.0"
+version = "0.3.1"
 authors = ["kennytm <[email protected]>"]
 edition = "2018"
 license = "MIT"

src/schemagen_cli.rs

@@ -288,7 +288,7 @@ impl<'a> IndexAppender<'a> {
         unique_cutoff: f64,
         is_primary_key: bool,
     ) {
-        let index_count = self.index_count_distr.sample(rng) as usize;
+        let index_count = (self.index_count_distr.sample(rng) as usize).min(12);
         let index_set = self
             .index_distr
             .sample_iter(&mut rng)