“SELECT DISTINCT _id near “SELECT”中的语法错误

Question

If someone knows a better way to get a rowId from text in the row, please let me know.

I've been running around in circles with this and I know it's probably something simple, but I can't figure it out. Hoping someone can tell me what I'm doing wrong. I'm getting an error running this SQLite code:

String where = "SELECT rowid, * FROM masterRecord WHERE masNameCol=" + name;
Cursor c =  db.query(true, masterName, ALL_KEYS_MASTER, where, null, null, null, null, null);

The error points to the second line.

"name" is a string variable (in this case it's "Mary"). The exact error I'm getting is:

SQLiteLog: (1) near "SELECT": syntax error in "SELECT DISTINCT _id, masNameCol, masTotalTimeCol FROM masterRecord WHERE SELECT rowid, * FROM masterRecord WHERE masNameCol=Mary"

I've tried every syntax change I could find and think of, and it never changes the error. I'm just trying to get the rowId of the row so I can change a value in another column.

Answer 1

Use rawQuery() , not query() .

You are trying to specify the entire SQL statement, which is what rawQuery() is for. query() assembles the SQL statement from pieces, and your one piece ( where ) is not just the WHERE clause.

Answer 2

Use placeholders for queries:

where = "masNameCol = ?";
whereArgs = new String[] { name };
columns = new String[] { "rowId" , /* all other column names you are interested in */  };
Cursor c =  db.query("mytable", columns, where, whereArgs, null, null, null);