82 lines
2.7 KiB
MySQL
82 lines
2.7 KiB
MySQL
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/**
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* Create Script for Re-Creating Table
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* - Drop Dependencies (so that deleting rows does not restrict / trigger deleting dependent tows)
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* - Copy into temp table
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* - Drop original table
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* - Create new Table (not generated)
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* - Insert data
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* - Drop temp table
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*/
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CREATE TABLE TempOut (
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Line Number(10), Text VARCHAR(2000))
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/
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DECLARE
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p_TableName VARCHAR2(200) := 'M_ProductionPlan';
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-- Dependency Info
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CURSOR CUR_Dep IS
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SELECT dep.Table_Name, dep.Constraint_Name, DBA_ConstraintCmd(dep.Constraint_Name) AS Cmd
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FROM User_Constraints tab, User_Constraints dep
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WHERE tab.Constraint_Name=dep.R_Constraint_Name
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AND tab.Constraint_Type='P' AND dep.Constraint_Type='R'
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AND tab.Table_Name=UPPER(p_TableName);
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No NUMBER(10) := 1;
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-- Table Column Info
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CURSOR CUR_Col IS
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SELECT COLUMN_NAME
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FROM USER_TAB_COLUMNS
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WHERE TABLE_NAME = UPPER(p_TableName)
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ORDER BY COLUMN_ID;
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v_Line VARCHAR2(2000) := '';
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BEGIN
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-- Dependency Info
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INSERT INTO TempOut VALUES (0, '-- 1 -- Dependencies');
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FOR d IN CUR_Dep LOOP
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-- Drop first
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INSERT INTO TempOut VALUES (No, 'ALTER TABLE ' || d.Table_Name
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|| ' DROP CONSTRAINT ' || d.Constraint_Name || ';');
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-- Create then
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INSERT INTO TempOut VALUES (No+500, d.Cmd || ';');
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No := No + 1;
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END LOOP;
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/**
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* Create List of Columns
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*/
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v_Line := '';
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FOR c IN CUR_Col LOOP
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IF (LENGTH(v_Line) > 0) THEN
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v_Line := v_Line || ',' || InitCap(c.Column_Name);
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ELSE
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v_Line := v_Line || InitCap(c.Column_Name);
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END IF;
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END LOOP;
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/**
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* Output
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*/
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INSERT INTO TempOut VALUES (100, '-- 2 -- Create/Copy');
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-- Copy into temp table
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INSERT INTO TempOut VALUES (101, 'CREATE TABLE ' || p_TableName || '_TT AS SELECT * FROM '
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|| p_TableName || ';');
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INSERT INTO TempOut VALUES (102, 'SELECT COUNT(*) FROM ' || p_TableName || '_TT;');
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-- Drop original table
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INSERT INTO TempOut VALUES (103, 'DROP TABLE ' || p_TableName || ' CASCADE CONSTRAINTS;');
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-- Create new Table (not generated)
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INSERT INTO TempOut VALUES (150, '-- 3 -- New Table');
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INSERT INTO TempOut VALUES (151, '-- >> CREATE TABLE HERE <<');
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-- Insert data
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INSERT INTO TempOut VALUES (200, '-- 4 -- Copy');
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INSERT INTO TempOut VALUES (201, 'INSERT INTO ' || p_TableName || ' (' || v_Line || ')');
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INSERT INTO TempOut VALUES (202, 'SELECT ' || v_Line || ' FROM ' || p_TableName || '_TT;');
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INSERT INTO TempOut VALUES (203, 'SELECT COUNT(*) FROM ' || p_TableName || ';');
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INSERT INTO TempOut VALUES (300, '-- 5 -- Finish');
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-- Drop temp table
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INSERT INTO TempOut VALUES (999, '-- DROP TABLE ' || p_TableName || '_TT;');
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END;
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/
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SELECT Text FROM TempOut ORDER BY Line
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/
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DROP TABLE TempOut
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/
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