sql highlight

docs/index.md

@@ -44,16 +44,11 @@ In this project, I’m exploring two aspects of the dataset:
 
 This page summarizes the time distribution of the data:
 
-```sql id=dates
+```sql id=dates echo
+-- dates --
 SELECT year FROM presse WHERE year >= '1000'
 ```
 
-````
-```sql id=dates
-SELECT year FROM presse WHERE year >= '1000'
-```
-````
-
 _Note: due to the date pattern matching I’m using, unknown years are marked as 0000. Hence the filter above._
 
 The chart below indicates that the bulk of the contents collected in this database was published between 1850 and 1950. It’s obviously not that the _presse_ stopped after 1950, but because most of the printed world after that threshold year is still out of reach of researchers, as it is “protected” by copyright or _droit d’auteur._

docs/source.md

@@ -49,7 +49,7 @@ sql:
 
 and process with [sql](https://observablehq.com/framework/sql) code blocks:
 
-````
+````sql run=false
 ```sql
 SELECT COUNT() FROM presse
 ```