188 lines
2.8 KiB
Plaintext
188 lines
2.8 KiB
Plaintext
--
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-- MONEY
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--
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CREATE TABLE money_data (m money);
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INSERT INTO money_data VALUES ('123');
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SELECT * FROM money_data;
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m
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---------
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$123.00
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(1 row)
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SELECT m + '123' FROM money_data;
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?column?
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----------
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$246.00
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(1 row)
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SELECT m + '123.45' FROM money_data;
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?column?
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----------
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$246.45
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(1 row)
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SELECT m - '123.45' FROM money_data;
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?column?
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----------
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-$0.45
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(1 row)
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SELECT m * 2 FROM money_data;
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?column?
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----------
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$246.00
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(1 row)
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SELECT m / 2 FROM money_data;
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?column?
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----------
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$61.50
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(1 row)
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-- All true
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SELECT m = '$123.00' FROM money_data;
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?column?
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----------
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t
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(1 row)
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SELECT m != '$124.00' FROM money_data;
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?column?
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----------
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t
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(1 row)
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SELECT m <= '$123.00' FROM money_data;
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?column?
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----------
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t
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(1 row)
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SELECT m >= '$123.00' FROM money_data;
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?column?
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----------
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t
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(1 row)
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SELECT m < '$124.00' FROM money_data;
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?column?
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----------
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t
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(1 row)
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SELECT m > '$122.00' FROM money_data;
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?column?
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----------
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t
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(1 row)
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-- All false
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SELECT m = '$123.01' FROM money_data;
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?column?
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----------
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f
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(1 row)
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SELECT m != '$123.00' FROM money_data;
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?column?
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----------
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f
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(1 row)
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SELECT m <= '$122.99' FROM money_data;
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?column?
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----------
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f
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(1 row)
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SELECT m >= '$123.01' FROM money_data;
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?column?
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----------
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f
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(1 row)
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SELECT m > '$124.00' FROM money_data;
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?column?
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----------
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f
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(1 row)
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SELECT m < '$122.00' FROM money_data;
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?column?
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----------
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f
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(1 row)
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SELECT cashlarger(m, '$124.00') FROM money_data;
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cashlarger
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------------
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$124.00
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(1 row)
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SELECT cashsmaller(m, '$124.00') FROM money_data;
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cashsmaller
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-------------
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$123.00
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(1 row)
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SELECT cash_words(m) FROM money_data;
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cash_words
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-------------------------------------------------
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One hundred twenty three dollars and zero cents
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(1 row)
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SELECT cash_words(m + '1.23') FROM money_data;
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cash_words
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--------------------------------------------------------
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One hundred twenty four dollars and twenty three cents
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(1 row)
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DELETE FROM money_data;
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INSERT INTO money_data VALUES ('$123.45');
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SELECT * FROM money_data;
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m
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---------
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$123.45
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(1 row)
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DELETE FROM money_data;
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INSERT INTO money_data VALUES ('$123.451');
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SELECT * FROM money_data;
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m
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---------
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$123.45
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(1 row)
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DELETE FROM money_data;
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INSERT INTO money_data VALUES ('$123.454');
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SELECT * FROM money_data;
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m
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---------
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$123.45
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(1 row)
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DELETE FROM money_data;
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INSERT INTO money_data VALUES ('$123.455');
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SELECT * FROM money_data;
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m
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---------
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$123.46
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(1 row)
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DELETE FROM money_data;
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INSERT INTO money_data VALUES ('$123.456');
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SELECT * FROM money_data;
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m
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---------
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$123.46
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(1 row)
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DELETE FROM money_data;
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INSERT INTO money_data VALUES ('$123.459');
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SELECT * FROM money_data;
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m
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---------
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$123.46
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(1 row)
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