feat: introduce infoSchemaMarkdown SQL

netspective-labs · Oct 16, 2023 · 7fec826 · 7fec826
1 parent ee44f8a
commit 7fec826
Showing 1 changed file with 70 additions and 0 deletions.
diff --git a/pattern/content-aide/notebook.sqla.ts b/pattern/content-aide/notebook.sqla.ts
@@ -161,6 +161,75 @@ export function library<EmitContext extends SQLa.SqlEmitContext>(libOptions: {
             m.type = 'table';`),
   };
 
+  const infoSchemaMarkdown = SQL()`
+    WITH TableInfo AS (
+      SELECT
+        m.tbl_name AS table_name,
+        CASE WHEN c.pk THEN '*' ELSE '' END AS is_primary_key,
+        c.name AS column_name,
+        c."type" AS column_type,
+        CASE WHEN c."notnull" THEN '*' ELSE '' END AS not_null,
+        COALESCE(c.dflt_value, '') AS default_value,
+        COALESCE((SELECT pfkl.'table' || '.' || pfkl.'to' FROM pragma_foreign_key_list(m.tbl_name) AS pfkl WHERE pfkl.'from' = c.name), '') as fk_refs,
+        ROW_NUMBER() OVER (PARTITION BY m.tbl_name ORDER BY c.cid) AS row_num
+      FROM sqlite_master m JOIN pragma_table_info(m.tbl_name) c ON 1=1
+      WHERE m.type = 'table'
+      ORDER BY table_name, row_num
+    ),
+    Views AS (
+      SELECT '## Views ' AS markdown_output
+      UNION ALL
+      SELECT '| View | Column | Type |' AS markdown_output
+      UNION ALL
+      SELECT '| ---- | ------ |----- |' AS markdown_output
+      UNION ALL
+      SELECT '| ' || tbl_name || ' | ' || c.name || ' | ' || c."type" || ' | '
+      FROM
+        sqlite_master m,
+        pragma_table_info(m.tbl_name) c
+      WHERE
+        m.type = 'view'
+    ),
+    Indexes AS (
+      SELECT '## Indexes' AS markdown_output
+      UNION ALL
+      SELECT '| Table | Index | Columns |' AS markdown_output
+      UNION ALL
+      SELECT '| ----- | ----- | ------- |' AS markdown_output
+      UNION ALL
+      SELECT '| ' ||  m.name || ' | ' || il.name || ' | ' || group_concat(ii.name, ', ') || ' |' AS markdown_output
+      FROM sqlite_master as m,
+        pragma_index_list(m.name) AS il,
+        pragma_index_info(il.name) AS ii
+      WHERE
+        m.type = 'table'
+      GROUP BY
+        m.name,
+        il.name
+    )
+    SELECT
+      markdown_output AS markdown_result
+    FROM
+      (
+        SELECT '## Tables' AS markdown_output
+        UNION ALL
+        SELECT
+          CASE WHEN ti.row_num = 1 THEN '
+    ### \`' || ti.table_name || '\` Table
+    | PK | Column | Type | Req? | Default | References |
+    | -- | ------ | ---- | ---- | ------- | ---------- |
+    ' ||
+            '| ' || is_primary_key || ' | ' || ti.column_name || ' | ' || ti.column_type || ' | ' || ti.not_null || ' | ' || ti.default_value || ' | ' || ti.fk_refs || ' |'
+          ELSE
+            '| ' || is_primary_key || ' | ' || ti.column_name || ' | ' || ti.column_type || ' | ' || ti.not_null || ' | ' || ti.default_value || ' | ' || ti.fk_refs || ' |'
+          END
+        FROM TableInfo ti
+        UNION ALL SELECT ''
+        UNION ALL SELECT * FROM	Views
+        UNION ALL SELECT ''
+        UNION ALL SELECT * FROM Indexes
+    );`;
+
   const mimeTypesSeedDML = () => {
     const { loadExtnSQL: load } = libOptions;
     return SQL()`
@@ -606,6 +675,7 @@ export function library<EmitContext extends SQLa.SqlEmitContext>(libOptions: {
     optimalOpenDB,
     optimalCloseDB,
     inspect,
+    infoSchemaMarkdown,
     deviceDML,
     mimeTypesSeedDML,
     insertContent,