Database to v4: split off symbol_locations table.

bitshift/database/migration.py

@@ -3,7 +3,7 @@ Contains information about database schema versions, and SQL queries to update
 between them.
 """
 
-VERSION = 3
+VERSION = 4
 
 MIGRATIONS = [
     # 1 -> 2
@@ -32,6 +32,27 @@ MIGRATIONS = [
            ADD CONSTRAINT `symbols_ibfk_1` FOREIGN KEY (`symbol_code`)
                REFERENCES `code` (`code_id`)
                ON DELETE CASCADE ON UPDATE CASCADE"""
+    ],
+    # 3 -> 4
+    [
+        """ALTER TABLE `symbols`
+           DROP COLUMN `symbol_row`,
+           DROP COLUMN `symbol_col`,
+           DROP COLUMN `symbol_end_row`,
+           DROP COLUMN `symbol_end_col`""",
+        """CREATE TABLE `symbol_locations` (
+           `sloc_id` BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
+           `sloc_symbol` BIGINT UNSIGNED NOT NULL,
+           `sloc_type` TINYINT UNSIGNED NOT NULL,
+           `sloc_row` INT UNSIGNED NOT NULL,
+           `sloc_col` INT UNSIGNED NOT NULL,
+           `sloc_end_row` INT UNSIGNED NOT NULL,
+           `sloc_end_col` INT UNSIGNED NOT NULL,
+           PRIMARY KEY (`sloc_id`),
+           FOREIGN KEY (`sloc_symbol`)
+               REFERENCES `symbols` (`symbol_id`)
+               ON DELETE CASCADE ON UPDATE CASCADE
+           ) ENGINE=InnoDB"""
     ]
 ]
 

bitshift/database/schema.sql

@@ -1,4 +1,4 @@
+-- Schema version 4
 
 CREATE DATABASE `bitshift` DEFAULT CHARACTER SET utf8 COLLATE utf8_unicode_ci;
 USE `bitshift`;
@@ -6,7 +6,7 @@ USE `bitshift`;
 CREATE TABLE `version` (
     `version` INT UNSIGNED NOT NULL
 ) ENGINE=InnoDB;
-INSERT INTO `version` VALUES (3);
+INSERT INTO `version` VALUES (4);
 
 CREATE TABLE `origins` (
     `origin_id` TINYINT UNSIGNED NOT NULL AUTO_INCREMENT,
@@ -65,10 +65,6 @@ CREATE TABLE `symbols` (
     `symbol_code` BIGINT NOT NULL,
     `symbol_type` TINYINT UNSIGNED NOT NULL,
     `symbol_name` VARCHAR(512) NOT NULL,
-    `symbol_row` INT UNSIGNED NOT NULL,
-    `symbol_col` INT UNSIGNED NOT NULL,
-    `symbol_end_row` INT UNSIGNED NOT NULL,
-    `symbol_end_col` INT UNSIGNED NOT NULL,
     PRIMARY KEY (`symbol_id`),
     KEY (`symbol_type`, `symbol_name`(32)),
     FOREIGN KEY (`symbol_code`)
@@ -76,6 +72,20 @@ CREATE TABLE `symbols` (
         ON DELETE CASCADE ON UPDATE CASCADE
 ) ENGINE=InnoDB;
 
+CREATE TABLE `symbol_locations` (
+    `sloc_id` BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
+    `sloc_symbol` BIGINT UNSIGNED NOT NULL,
+    `sloc_type` TINYINT UNSIGNED NOT NULL,
+    `sloc_row` INT UNSIGNED NOT NULL,
+    `sloc_col` INT UNSIGNED NOT NULL,
+    `sloc_end_row` INT UNSIGNED NOT NULL,
+    `sloc_end_col` INT UNSIGNED NOT NULL,
+    PRIMARY KEY (`sloc_id`),
+    FOREIGN KEY (`sloc_symbol`)
+        REFERENCES `symbols` (`symbol_id`)
+        ON DELETE CASCADE ON UPDATE CASCADE
+) ENGINE=InnoDB;
+
 CREATE TABLE `cache` (
     `cache_id` INT UNSIGNED NOT NULL AUTO_INCREMENT,
     `cache_hash` BIGINT NOT NULL,