test: add like function

cases/string/like.yaml

@@ -0,0 +1,60 @@
+function: like
+cases:
+  - group:
+      id: basic
+      description: Basic examples without any special cases
+    args:
+      - value: 'abcdefg'
+        type: string
+      - value: 'abcdefg'
+        type: string
+    result:
+      value: true
+      type: boolean
+  - group: basic
+    args:
+      - value: 'abcdefg'
+        type: string
+      - value: 'abc'
+        type: string
+    result:
+      value: false
+      type: boolean
+  - group:
+      id: wildcard
+      description: Examples using wildcards
+    args:
+      - value: 'abcdefg'
+        type: string
+      - value: 'abc%'
+        type: string
+    result:
+      value: true
+      type: boolean
+  - group: wildcard
+    args:
+      - value: 'abcdefg'
+        type: string
+      - value: '%efg'
+        type: string
+    result:
+      value: true
+      type: boolean
+  - group: wildcard
+    args:
+      - value: 'abcdefg'
+        type: string
+      - value: '_bcdefg'
+        type: string
+    result:
+      value: true
+      type: boolean
+  - group: wildcard
+    args:
+      - value: 'abcdefg'
+        type: string
+      - value: 'abc_efg'
+        type: string
+    result:
+      value: true
+      type: boolean

dialects/postgres.yaml

@@ -60,3 +60,5 @@ scalar_functions:
   - name: concat
     local_name: "||"
     infix: True
+  - name: like
+    infix: True

dialects/sqlite.yaml

@@ -44,3 +44,5 @@ scalar_functions:
   - name: concat
     local_name: "||"
     infix: True
+  - name: like
+    infix: True

dialects/velox_presto.yaml

@@ -68,3 +68,5 @@ scalar_functions:
   - name: concat
     local_name: concat
     infix: False
+  - name: like
+    infix: True