Credit debit

In this example you are shown how to split a single column into two separate columns and also below you are

told how to combine two tables into a single table. Here we are splitting cash amounts into credit and debit.

Table 1 shows the results without the split column and Table 2 shows what we get when the column is split into two.

Table 1
whn	description	amount
2006-11-01	Wages	50
2006-11-02	Company Store	-10
2006-11-03	Company Store	-10
2006-11-04	Company Store	-10
2006-11-05	Company Store	-10
2006-11-06	Company Store	-10

Table 2
whn	description	cshIN	cshOUT
2006-11-01	Wages	50
2006-11-02	Company Store		10
2006-11-03	Company Store		10
2006-11-04	Company Store		10
2006-11-05	Company Store		10
2006-11-06	Company Store		10

schema:scott

DROP TABLE transact

 CREATE TABLE transact(
  whn DATE,
  description VARCHAR(20),
  amount INTEGER );
INSERT INTO transact VALUES ('2006-11-01','Wages',50);
INSERT INTO transact VALUES ('2006-11-02','Company Store',-10);
INSERT INTO transact VALUES ('2006-11-03','Company Store',-10);
INSERT INTO transact VALUES ('2006-11-04','Company Store',-10);
INSERT INTO transact VALUES ('2006-11-05','Company Store',-10);
INSERT INTO transact VALUES ('2006-11-06','Company Store',-10);

SELECT w AS dte, d AS description, 
   CASE WHEN (a>=0) THEN a ELSE NULL END AS cshIN,
   CASE WHEN (a<0) THEN SUBSTR(a,2,10) ELSE NULL END AS cshOUT
  FROM
  (SELECT x.whn AS w, x.description AS d, 
          x.amount AS a
     FROM transact x
     JOIN transact y ON (x.whn>=y.whn)
     GROUP BY x.whn, x.description, x.amount) t

Credit debit

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