Merged PR 4735: Test PR for CI stuff

You can ignore me, I'm not important.

.azure-pipelines.yml

@@ -1,8 +1,7 @@
 trigger:
-- master  # Runs on each commit to master
-
-pr:
-- master  # Runs on PRs targeting master
+  branches:
+    include:
+      - master
 
 pool:
   name: ci-pool-prd
@@ -14,24 +13,30 @@ steps:
 
 - script: |
     cp ~/dbt-ci/.env .
-    echo "POSTGRES_DATABASE=${BUILD_SOURCEBRANCH#refs/heads/}" >> .env
+
+    # Check if it matches the refs/pull/<PR_ID>/merge pattern
+    if [[ $BUILD_SOURCEBRANCH =~ ^refs/pull/([0-9]+)/merge$ ]]; then
+        POSTGRES_DATABASE="ci_pr_${BASH_REMATCH[1]}"
+    else
+        POSTGRES_DATABASE="ci_${BUILD_SOURCEBRANCH#refs/heads/}"
+    fi
+
+    echo "POSTGRES_DATABASE: $POSTGRES_DATABASE"
+
+    echo "POSTGRES_DATABASE=${POSTGRES_DATABASE}" >> .env
     set -a && source .env && set +a
   displayName: 'Load env'
 
 - script: |
-    cp ~/dbt-ci/.env .
-    echo "POSTGRES_DATABASE=${BUILD_SOURCEBRANCH#refs/heads/}" >> .env
     set -a && source .env && set +a
 
     psql -h $POSTGRES_HOST -U $POSTGRES_USER -d postgres -c "SELECT 1 FROM pg_database WHERE datname = 'postgres';"
   displayName: 'Smoke test Postgres connection'
 
 - script: |
-    cp ~/dbt-ci/.env .
-    echo "POSTGRES_DATABASE=${BUILD_SOURCEBRANCH#refs/heads/}" >> .env
     set -a && source .env && set +a
 
-    psql -h $POSTGRES_HOST -U $POSTGRES_USER -d postgres -c "CREATE DATABASE ci_${BUILD_SOURCEBRANCH#refs/heads/}"
+    psql -h $POSTGRES_HOST -U $POSTGRES_USER -d postgres -c "CREATE DATABASE ${POSTGRES_DATABASE}"
   displayName: 'Create branch dedicated database'
 
 - script: |
@@ -65,7 +70,7 @@ steps:
 - script: |
     set -a && source .env && set +a
 
-    psql -h $POSTGRES_HOST -U $POSTGRES_USER -d postgres -c "DROP DATABASE ci_${BUILD_SOURCEBRANCH#refs/heads/}"
+    psql -h $POSTGRES_HOST -U $POSTGRES_USER -d postgres -c "DROP DATABASE ${POSTGRES_DATABASE}"
   condition: always()
   displayName: 'Delete branch dedicated database'
   

README.md

@@ -134,6 +134,10 @@ Once you build the docs with `run_docs.sh`, you will have a bunch of files. To o
 
 This goes beyond the scope of this project: to understand how you can serve these, refer to our [infra script repo](https://guardhog.visualstudio.com/Data/_git/data-infra-script). Specifically, the bits around the web gateway set up.
 
+## CI
+
+TBD.
+
 ## Stuff that we haven't done but we would like to
 
 - Automate formatting with git pre-commit.