postgre - analyse foreign keys

packages/engines/postgres/sql/foreignKeys.js

@@ -0,0 +1,24 @@
+module.exports = `
+select 
+	fk.constraint_name as "constraintName",
+	fk.constraint_schema as "constraintSchema",
+	base.table_name as "pureName",
+	base.table_schema as "schemaName",
+	fk.update_rule as "updateAction",
+	fk.delete_rule as "deleteAction",
+	ref.table_name as "refTableName",
+	ref.table_schema as "refSchemaName",
+	basecol.column_name as "columnName",
+	refcol.column_name as "refColumnName"
+from information_schema.referential_constraints fk
+inner join information_schema.table_constraints base on fk.constraint_name = base.constraint_name and fk.constraint_schema = base.constraint_schema
+inner join information_schema.table_constraints ref on fk.unique_constraint_name = ref.constraint_name and fk.unique_constraint_schema = ref.constraint_schema
+inner join information_schema.key_column_usage basecol on base.table_name = basecol.table_name and base.constraint_name = basecol.constraint_name
+inner join information_schema.key_column_usage refcol on ref.table_name = refcol.table_name and ref.constraint_name = refcol.constraint_name and basecol.ordinal_position = refcol.ordinal_position
+where 
+		base.table_schema <> 'information_schema' 
+		and base.table_schema <> 'pg_catalog' 
+		and base.table_schema !~ '^pg_toast' 
+		and 'table:' || base.table_schema || '.' || base.table_name =[OBJECT_ID_CONDITION]
+order by basecol.ordinal_position
+`;

packages/engines/postgres/sql/index.js

@@ -1,7 +1,11 @@
 const columns = require('./columns');
 const tableModifications = require('./tableModifications');
+const primaryKeys = require('./primaryKeys');
+const foreignKeys = require('./foreignKeys');
 
 module.exports = {
   columns,
   tableModifications,
+  primaryKeys,
+  foreignKeys,
 };

packages/engines/postgres/sql/primaryKeys.js

@@ -0,0 +1,17 @@
+module.exports = `
+select 
+	table_constraints.constraint_schema as "constraintSchema",
+	table_constraints.constraint_name as "constraintName",
+	table_constraints.table_schema as "schemaName",
+	table_constraints.table_name as "pureName",
+	key_column_usage.column_name as "columnName"
+from information_schema.table_constraints
+inner join information_schema.key_column_usage on table_constraints.table_name = key_column_usage.table_name and table_constraints.constraint_name = key_column_usage.constraint_name
+where 
+		table_constraints.table_schema <> 'information_schema' 
+		and table_constraints.table_schema <> 'pg_catalog' 
+		and table_constraints.table_schema !~ '^pg_toast' 
+		and table_constraints.constraint_type = 'PRIMARY KEY'
+		and 'table:' || table_constraints.table_schema || '.' || table_constraints.table_name =[OBJECT_ID_CONDITION]
+order by key_column_usage.ordinal_position
+`;