创建PostgreSql触发器来更新库存数量

我想创建一个使用Postgresql DBMS版本9.4的库存管理系统的触发器。它允许我计算库存产品的数量。所以，她是我们需要的表格的模式。创建PostgreSql触发器来更新库存数量

produit(produitid(PK),qteInitiale,qteInStock,prixDachat,prixDevente) ; 
entreeDetaille(qteIn,prixDachat,remise,(produitId(FK),bonId(FK),(PK))); 
sortieDetaille(qteOut,prixDeVente,remise,(produitId(FK),bonId(FK),(PK))); 

The Stock quantity = produit.qteInitiale where id = ? + sum(qteIn) where id = ? + sum(qteOut) where id = ?

触发器需要在entreeDetaille或者sortieDetaille表上发生insert事件后调用。

我已经开始用这个尝试，但不是为我工作：

CREATE OR REPLACE FUNCTION updateqteinstock() 
     RETURNS trigger AS 
    $BODY$ 
    declare 
    qteInitiale money; 
    qteAcheter money ; 
    qteVendue money; 
    qteEnStock money ; 
    produitID integer ; 
    begin 

    if TG_OP == "INSERT" then 
    produitID := NEW.produitid; 
    else 
    produitID := OLD.produitid; 
    end if ; 


    -- ramener la quantité Initiale de stock 
    qteInitiale := select qteinitiale from produit where produitid = produitID ; 

    -- ramener la quantité acheter 
    qteAcheter := (select sum(qtein) from entreedetaille where produitid = produitID); 

-- ramener la quantité vendue 
    qteVendue := select sum(qteOut) from sortieDetaille where produitid = produitID ; 

    -- calculate quantité qte en stock + quantité acheter + quantité vendue 
    qteEnStock := qteInitiale + qteAcheter - qteVendue; 

    -- update la quantite en stock ; 
    update produit set qtestock = qteEnStock where produitid = produitID ; 

    if TG_OP == "INSERT" 
    return new; 
    else 
    return old; 
    end; 
    $BODY$ 
     LANGUAGE plpgsql

我收到此错误：

org.postgresql.util.PSQLException: ERROR: column "produitid" does not exist 
    Où : PL/pgSQL function updateqteinstock() line 11 at assignment 
    at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2198) 
    at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:1927) 
    at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:255) 
    at org.postgresql.jdbc2.AbstractJdbc2Statement.execute(AbstractJdbc2Statement.java:561) 
    at org.postgresql.jdbc2.AbstractJdbc2Statement.executeWithFlags(AbstractJdbc2Statement.java:419) 
    at org.postgresql.jdbc2.AbstractJdbc2Statement.executeUpdate(AbstractJdbc2Statement.java:365) 
    at DAO.BonDachatDAO.create(BonDachatDAO.java:203) 
    at CONTROLLER.BonDachatController.createBonDachat(BonDachatController.java:83) 
    at VIEW.eventsManagers.BonDachatEventManager.saveBonDachat(BonDachatEventManager.java:108) 
    at VIEW.eventsManagers.BonDachatEventManager.actionPerformed(BonDachatEventManager.java:79) 
    at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2022) 
    at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2346) 
    at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402) 
    at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259) 
    at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252) 
    at java.awt.Component.processMouseEvent(Component.java:6527) 
    at javax.swing.JComponent.processMouseEvent(JComponent.java:3321) 
    at java.awt.Component.processEvent(Component.java:6292) 
    at java.awt.Container.processEvent(Container.java:2234) 
    at java.awt.Component.dispatchEventImpl(Component.java:4883) 
    at java.awt.Container.dispatchEventImpl(Container.java:2292) 
    at java.awt.Component.dispatchEvent(Component.java:4705) 
    at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4898) 
    at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4533) 
    at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4462) 
    at java.awt.Container.dispatchEventImpl(Container.java:2278) 
    at java.awt.Window.dispatchEventImpl(Window.java:2739) 
    at java.awt.Component.dispatchEvent(Component.java:4705) 
    at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:746) 
    at java.awt.EventQueue.access$400(EventQueue.java:97) 
    at java.awt.EventQueue$3.run(EventQueue.java:697) 
    at java.awt.EventQueue$3.run(EventQueue.java:691) 
    at java.security.AccessController.doPrivileged(Native Method) 
    at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75) 
    at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:86) 
    at java.awt.EventQueue$4.run(EventQueue.java:719) 
    at java.awt.EventQueue$4.run(EventQueue.java:717) 
    at java.security.AccessController.doPrivileged(Native Method) 
    at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75) 
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:716) 
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201) 
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116) 
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105) 
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101) 
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93) 
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:82) 
org.postgresql.util.PSQLException: ERROR: column "porduitid" does not exist 
    Où : PL/pgSQL function updateqteinstock() line 14 at assignment 
    at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2198) 
    at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:1927) 
    at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:255) 
    at org.postgresql.jdbc2.AbstractJdbc2Statement.execute(AbstractJdbc2Statement.java:561) 
    at org.postgresql.jdbc2.AbstractJdbc2Statement.executeWithFlags(AbstractJdbc2Statement.java:419) 
    at org.postgresql.jdbc2.AbstractJdbc2Statement.executeUpdate(AbstractJdbc2Statement.java:365) 
    at DAO.BonDachatDAO.create(BonDachatDAO.java:203) 
    at CONTROLLER.BonDachatController.createBonDachat(BonDachatController.java:83) 
    at VIEW.eventsManagers.BonDachatEventManager.saveBonDachat(BonDachatEventManager.java:108) 
    at VIEW.eventsManagers.BonDachatEventManager.actionPerformed(BonDachatEventManager.java:79) 
    at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2022) 
    at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2346) 
    at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402) 
    at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259) 
    at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252) 
    at java.awt.Component.processMouseEvent(Component.java:6527) 
    at javax.swing.JComponent.processMouseEvent(JComponent.java:3321) 
    at java.awt.Component.processEvent(Component.java:6292) 
    at java.awt.Container.processEvent(Container.java:2234) 
    at java.awt.Component.dispatchEventImpl(Component.java:4883) 
    at java.awt.Container.dispatchEventImpl(Container.java:2292) 
    at java.awt.Component.dispatchEvent(Component.java:4705) 
    at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4898) 
    at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4533) 
    at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4462) 
    at java.awt.Container.dispatchEventImpl(Container.java:2278) 
    at java.awt.Window.dispatchEventImpl(Window.java:2739) 
    at java.awt.Component.dispatchEvent(Component.java:4705) 
    at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:746) 
    at java.awt.EventQueue.access$400(EventQueue.java:97) 
    at java.awt.EventQueue$3.run(EventQueue.java:697) 
    at java.awt.EventQueue$3.run(EventQueue.java:691) 
    at java.security.AccessController.doPrivileged(Native Method) 
    at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75) 
    at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:86) 
    at java.awt.EventQueue$4.run(EventQueue.java:719) 
    at java.awt.EventQueue$4.run(EventQueue.java:717) 
    at java.security.AccessController.doPrivileged(Native Method) 
    at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75) 
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:716) 
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201) 
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116) 
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105) 
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101) 
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93) 
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)

在这儿，我重视的触发该过程：

CREATE TRIGGER achatTrigger AFTER INSERT OR DELETE on entreedetaille 
FOR EACH ROW EXECUTE PROCEDURE updateqteinstock(); 



CREATE TRIGGER venteTrigger AFTER INSERT OR DELETE on sortiedetaille 
FOR EACH ROW EXECUTE PROCEDURE updateqteinstock();

来源

2015-01-15 abdou amer

http://www.postgresql.org/docs/current/static/plpgsql-statements.html#PLPGSQL-STATEMENTS-SQL-ONEROW –

当将选择值设置为qteInitiale变量时，您需要开始（和结束）。

变化是这样的：

qteInitiale := (select qteinitiale from produit where produitid = produitID) ;

来源

2015-01-15 12:13:12

或者使用'选择qteinitiale成qteInitiale from produit ...' –

affter修复最后一个错误，我得到这个错误：org.postgresql.util.PSQLException：错误：org.postgresql.util.PSQLException：错误：列“INSERT”不存在 Où：PL/pgSQL函数updateqteinstock（）第10行IF –

使用'单引号代替' –

创建PostgreSql触发器来更新库存数量

回答

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