X-Git-Url: http://git.equinoxoli.org/?p=migration-tools.git;a=blobdiff_plain;f=sql%2Fbase%2Fbase.sql;fp=sql%2Fbase%2Fbase.sql;h=60ef86c36b111fb7880b7c1acf75fdc0ba22639d;hp=9f3c6c99855999dc00a3ec7d3c7451374e9898f1;hb=739ab29d9f2b1b368b0f3e62cc02fd4de5f89b8f;hpb=e4d2843cf356364b515e0f4f34037f3062d25cd6

diff --git a/sql/base/base.sql b/sql/base/base.sql
index 9f3c6c9..60ef86c 100644
--- a/sql/base/base.sql
+++ b/sql/base/base.sql
@@ -261,6 +261,36 @@ CREATE OR REPLACE FUNCTION migration_tools.build_specific_base_staging_table (TE
     END;
 $$ LANGUAGE PLPGSQL STRICT VOLATILE;
 
+-- creates other child table so you can have more than one child table in a schema from a base table 
+CREATE OR REPLACE FUNCTION build_variant_staging_table(text, text, text)
+ RETURNS void
+ LANGUAGE plpgsql
+ STRICT
+AS $function$
+    DECLARE
+        migration_schema ALIAS FOR $1;
+        production_table ALIAS FOR $2;
+        base_staging_table ALIAS FOR $3;
+        columns RECORD;
+    BEGIN
+        --RAISE INFO 'In migration_tools.build_specific_base_staging_table(%,%) -> %', migration_schema, production_table, base_staging_table;
+        PERFORM migration_tools.exec( $1, 'CREATE TABLE ' || migration_schema || '.' || base_staging_table || ' ( LIKE ' || production_table || ' INCLUDING DEFAULTS EXCLUDING CONSTRAINTS );' );
+        PERFORM migration_tools.exec( $1, '
+            INSERT INTO ' || migration_schema || '.fields_requiring_mapping
+                SELECT table_schema, table_name, column_name, data_type
+                FROM information_schema.columns
+                WHERE table_schema = ''' || migration_schema || ''' AND table_name = ''' || base_staging_table || ''' AND is_nullable = ''NO'' AND column_default IS NULL;
+        ' );
+        FOR columns IN
+            SELECT table_schema, table_name, column_name, data_type
+            FROM information_schema.columns
+            WHERE table_schema = migration_schema AND table_name = base_staging_table AND is_nullable = 'NO' AND column_default IS NULL
+        LOOP
+            PERFORM migration_tools.exec( $1, 'ALTER TABLE ' || columns.table_schema || '.' || columns.table_name || ' ALTER COLUMN ' || columns.column_name || ' DROP NOT NULL;' );
+        END LOOP;
+    END;
+$function$
+
 CREATE OR REPLACE FUNCTION migration_tools.create_linked_legacy_table_from (TEXT,TEXT,TEXT) RETURNS VOID AS $$
     DECLARE
         migration_schema ALIAS FOR $1;