Merge branch 'parsesql' of https://github.com/treeform/Nim into treeform-parsesql
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Araq
commit
8caa3df1c3
2 changed files with 467 additions and 187 deletions
191
tests/stdlib/tparsesql.nim
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191
tests/stdlib/tparsesql.nim
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discard """
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file: "tparsesql.nim"
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"""
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import parsesql
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doAssert $parseSQL("SELECT foo FROM table;") == "select foo from table;"
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doAssert $parseSQL("""
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SELECT
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CustomerName,
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ContactName,
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Address,
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City,
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PostalCode,
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Country,
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CustomerName,
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ContactName,
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Address,
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City,
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PostalCode,
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Country
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FROM table;""") == "select CustomerName, ContactName, Address, City, PostalCode, Country, CustomerName, ContactName, Address, City, PostalCode, Country from table;"
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doAssert $parseSQL("SELECT foo FROM table limit 10") == "select foo from table limit 10;"
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doAssert $parseSQL("SELECT foo, bar, baz FROM table limit 10") == "select foo, bar, baz from table limit 10;"
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doAssert $parseSQL("SELECT foo AS bar FROM table") == "select foo as bar from table;"
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doAssert $parseSQL("SELECT foo AS foo_prime, bar AS bar_prime, baz AS baz_prime FROM table") == "select foo as foo_prime, bar as bar_prime, baz as baz_prime from table;"
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doAssert $parseSQL("SELECT * FROM table") == "select * from table;"
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#TODO add count(*)
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#doAssert $parseSQL("SELECT COUNT(*) FROM table"
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doAssert $parseSQL("""
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SELECT * FROM table
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WHERE a = b and c = d
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""") == "select * from table where a = b and c = d;"
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doAssert $parseSQL("""
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SELECT * FROM table
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WHERE not b
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""") == "select * from table where not b;"
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doAssert $parseSQL("""
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SELECT
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*
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FROM
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table
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WHERE
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a and not b
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""") == "select * from table where a and not b;"
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doAssert $parseSQL("""
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SELECT * FROM table
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WHERE a = b and c = d or n is null and not b + 1 = 3
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""") == "select * from table where a = b and c = d or n is null and not b + 1 = 3;"
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doAssert $parseSQL("""
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SELECT * FROM table
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WHERE (a = b and c = d) or (n is null and not b + 1 = 3)
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""") == "select * from table where(a = b and c = d) or (n is null and not b + 1 = 3);"
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doAssert $parseSQL("""
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SELECT * FROM table
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HAVING a = b and c = d
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""") == "select * from table having a = b and c = d;"
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doAssert $parseSQL("""
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SELECT a, b FROM table
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GROUP BY a
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""") == "select a, b from table group by a;"
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doAssert $parseSQL("""
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SELECT a, b FROM table
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GROUP BY 1, 2
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""") == "select a, b from table group by 1, 2;"
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doAssert $parseSQL("SELECT t.a FROM t as t") == "select t.a from t as t;"
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doAssert $parseSQL("""
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SELECT a, b FROM (
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SELECT * FROM t
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)
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""") == "select a, b from(select * from t);"
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doAssert $parseSQL("""
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SELECT a, b FROM (
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SELECT * FROM t
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) as foo
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""") == "select a, b from(select * from t) as foo;"
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doAssert $parseSQL("""
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SELECT a, b FROM (
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SELECT * FROM (
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SELECT * FROM (
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SELECT * FROM (
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SELECT * FROM innerTable as inner1
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) as inner2
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) as inner3
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) as inner4
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) as inner5
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""") == "select a, b from(select * from(select * from(select * from(select * from innerTable as inner1) as inner2) as inner3) as inner4) as inner5;"
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doAssert $parseSQL("""
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SELECT a, b FROM
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(SELECT * FROM a),
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(SELECT * FROM b),
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(SELECT * FROM c)
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""") == "select a, b from(select * from a),(select * from b),(select * from c);"
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doAssert $parseSQL("""
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SELECT * FROM Products
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WHERE Price BETWEEN 10 AND 20;
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""") == "select * from Products where Price between 10 and 20;"
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doAssert $parseSQL("""
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SELECT id FROM a
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JOIN b
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ON a.id == b.id
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""") == "select id from a join b on a.id == b.id;"
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doAssert $parseSQL("""
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SELECT id FROM a
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JOIN (SELECT id from c) as b
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ON a.id == b.id
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""") == "select id from a join(select id from c) as b on a.id == b.id;"
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doAssert $parseSQL("""
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SELECT id FROM a
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INNER JOIN b
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ON a.id == b.id
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""") == "select id from a inner join b on a.id == b.id;"
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doAssert $parseSQL("""
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SELECT id FROM a
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OUTER JOIN b
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ON a.id == b.id
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""") == "select id from a outer join b on a.id == b.id;"
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doAssert $parseSQL("""
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SELECT id FROM a
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CROSS JOIN b
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ON a.id == b.id
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""") == "select id from a cross join b on a.id == b.id;"
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doAssert $parseSQL("""
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CREATE TYPE happiness AS ENUM ('happy', 'very happy', 'ecstatic');
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CREATE TABLE holidays (
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num_weeks int,
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happiness happiness
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);
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CREATE INDEX table1_attr1 ON table1(attr1);
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SELECT * FROM myTab WHERE col1 = 'happy';
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""") == "create type happiness as enum ('happy' , 'very happy' , 'ecstatic' ); create table holidays(num_weeks int , happiness happiness );; create index table1_attr1 on table1(attr1 );; select * from myTab where col1 = 'happy';"
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doAssert $parseSQL("""
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INSERT INTO Customers (CustomerName, ContactName, Address, City, PostalCode, Country)
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VALUES ('Cardinal', 'Tom B. Erichsen', 'Skagen 21', 'Stavanger', '4006', 'Norway');
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""") == "insert into Customers (CustomerName , ContactName , Address , City , PostalCode , Country ) values ('Cardinal' , 'Tom B. Erichsen' , 'Skagen 21' , 'Stavanger' , '4006' , 'Norway' );"
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doAssert $parseSQL("""
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INSERT INTO TableName DEFAULT VALUES
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""") == "insert into TableName default values;"
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doAssert $parseSQL("""
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UPDATE Customers
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SET ContactName = 'Alfred Schmidt', City= 'Frankfurt'
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WHERE CustomerID = 1;
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""") == "update Customers set ContactName = 'Alfred Schmidt' , City = 'Frankfurt' where CustomerID = 1;"
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doAssert $parseSQL("DELETE FROM table_name;") == "delete from table_name;"
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doAssert $parseSQL("DELETE * FROM table_name;") == "delete from table_name;"
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doAssert $parseSQL("""
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--Select all:
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SELECT * FROM Customers;
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""") == "select * from Customers;"
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doAssert $parseSQL("""
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SELECT * FROM Customers WHERE (CustomerName LIKE 'L%'
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OR CustomerName LIKE 'R%' /*OR CustomerName LIKE 'S%'
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OR CustomerName LIKE 'T%'*/ OR CustomerName LIKE 'W%')
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AND Country='USA'
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ORDER BY CustomerName;
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""") == "select * from Customers where(CustomerName like 'L%' or CustomerName like 'R%' or CustomerName like 'W%') and Country = 'USA' order by CustomerName;"
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# parse keywords as identifires
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doAssert $parseSQL("""
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SELECT `SELECT`, `FROM` as `GROUP` FROM `WHERE`;
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""") == """select "SELECT", "FROM" as "GROUP" from "WHERE";"""
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