{"id":308,"date":"2022-03-23T19:12:45","date_gmt":"2022-03-23T19:12:45","guid":{"rendered":"https:\/\/www.jibsheet.net\/linux\/?p=308"},"modified":"2022-03-25T02:40:17","modified_gmt":"2022-03-25T02:40:17","slug":"python-how-to-construct-and-and-or-with-like","status":"publish","type":"post","link":"https:\/\/www.jibsheet.net\/linux\/index.php\/2022\/03\/23\/python-how-to-construct-and-and-or-with-like\/","title":{"rendered":"Python – how to construct SQL with “AND” and “OR” with LIKE"},"content":{"rendered":"
def run_query_table_multi(  search, and_flag=False ):\r\n        if and_flag is True:\r\n            combo = \" and \"\r\n        else:\r\n            combo = \" or  \"\r\n        try:\r\n                conn = mariadb.connect(\r\n                user=self.user,\r\n                password=self.password,\r\n                host=self.host,\r\n                port=self.port,\r\n                database=self.database\r\n                )\r\n        except mariadb.Error as e:\r\n                print(f\"Error connecting to MariaDB Platform: {e}\", e)\r\n                sys.exit(1)\r\n\r\n            # Get Cursor\r\n        cur = conn.cursor()\r\n\r\n        my_sql_qry = \"SELECT rec_id, title, http from recipe where\"\r\n        q_bld = \"\"\r\n        while len(search) > 0:\r\n            item = search.pop()\r\n            if len(search) > 0:\r\n                q_bld =  q_bld + \"( title like \" +   \"'%\" + item + \"%'\" + \")\" + combo \r\n            else:\r\n                q_bld =  q_bld  + \"( title like \"  +  \"'%\" + item + \"%'\" \")\"\r\n\r\n        try:\r\n            cur.execute(my_sql_qry + q_bld) \r\n        except mariadb.Error as e:\r\n            print(f\"Error: {e}\")\r\n            return None\r\n<\/pre>\n
This will result in a query using arbitrary items in a list<\/p>\n
 <\/p>\n
run_query_table_multi( [\"Ham', \"Cheese\"], True )\r\n\r\nwill output SQL ===>\r\n\r\n\r\nSELECT rec_id, title, http from recipe where( title like '%Cheese%') and ( title like '%Ham%')\r\n<\/pre>\n
Here is how it looks after a bit of refactoring<\/p>\n
Used functools filter to get rid of any blanks.\u00a0 \u00a0If you run “or” with a blank – it will select the entire table.<\/p>\n
This can support as many as the db can take.<\/p>\n
also pass what field you are selection on.<\/p>\n
def build_query(self,  field, psearch, combo):\r\n        like_field = \"( \" + field + \" like \" \r\n        q_bld = \"\"\r\n        psearch = list(filter(None,psearch))\r\n        print(\"qsearch: \", psearch)\r\n        while len(psearch) > 0:\r\n            item = psearch.pop()\r\n            if len(item) < 1:\r\n                continue;\r\n            if len(psearch) > 0:\r\n                q_bld =  q_bld + like_field +   \"'%\" + item + \"%'\" + \")\" + combo \r\n            else:\r\n                q_bld =  q_bld  + like_field   +  \"'%\" + item + \"%'\" \")\"\r\n        return q_bld\r\n<\/pre>\n
A sample call<\/p>\n
 <\/p>\n
my_sql_qry = \"SELECT rec_id, title, http from recipe where\"\r\nfield = \"title\"\r\ncombo = \" and \"\r\n\r\nq_bld = self.build_query(field, psearch, combo)\r\n\r\ntry:\r\n    cur.execute(my_sql_qry + q_bld)          \r\nexcept mariadb.Error as e:\r\n    print(f\"Error: {e}\")\r\n    return None<\/pre>\n
 <\/p>\n","protected":false},"excerpt":{"rendered":"
def run_query_table_multi( search, and_flag=False ): if and_flag is True: combo = ” and ” else: combo = ” or ” try: conn = mariadb.connect( user=self.user, password=self.password, host=self.host, port=self.port, database=self.database ) except mariadb.Error as e: print(f”Error connecting to MariaDB Platform: {e}”, e) sys.exit(1) # Get Cursor cur = conn.cursor() my_sql_qry = “SELECT rec_id, title, http from recipe where” q_bld = “” […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[7,27],"tags":[],"yoast_head":"\nPython - how to construct SQL with "AND" and "OR" with LIKE - Jon Allen's Linux Stuff<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.jibsheet.net\/linux\/index.php\/2022\/03\/23\/python-how-to-construct-and-and-or-with-like\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Python - how to construct SQL with "AND" and "OR" with LIKE - Jon Allen's Linux Stuff\" \/>\n<meta property=\"og:description\" content=\"def run_query_table_multi( search, and_flag=False ): if and_flag is True: combo = " and " else: combo = " or " try: conn = mariadb.connect( user=self.user, password=self.password, host=self.host, port=self.port, database=self.database ) except mariadb.Error as e: print(f"Error connecting to MariaDB Platform: {e}", e) sys.exit(1) # Get Cursor cur = conn.cursor() my_sql_qry = "SELECT rec_id, title, http from recipe where" q_bld = "" […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.jibsheet.net\/linux\/index.php\/2022\/03\/23\/python-how-to-construct-and-and-or-with-like\/\" \/>\n<meta property=\"og:site_name\" content=\"Jon Allen's Linux Stuff\" \/>\n<meta property=\"article:published_time\" content=\"2022-03-23T19:12:45+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2022-03-25T02:40:17+00:00\" \/>\n<meta name=\"author\" content=\"jonallen\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"jonallen\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.jibsheet.net\/linux\/index.php\/2022\/03\/23\/python-how-to-construct-and-and-or-with-like\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.jibsheet.net\/linux\/index.php\/2022\/03\/23\/python-how-to-construct-and-and-or-with-like\/\"},\"author\":{\"name\":\"jonallen\",\"@id\":\"https:\/\/www.jibsheet.net\/linux\/#\/schema\/person\/295a80d0b2aa929b648c4fdddee83993\"},\"headline\":\"Python – how to construct SQL with “AND” and “OR” with LIKE\",\"datePublished\":\"2022-03-23T19:12:45+00:00\",\"dateModified\":\"2022-03-25T02:40:17+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.jibsheet.net\/linux\/index.php\/2022\/03\/23\/python-how-to-construct-and-and-or-with-like\/\"},\"wordCount\":81,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/www.jibsheet.net\/linux\/#\/schema\/person\/295a80d0b2aa929b648c4fdddee83993\"},\"articleSection\":[\"Python\",\"SQL\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.jibsheet.net\/linux\/index.php\/2022\/03\/23\/python-how-to-construct-and-and-or-with-like\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.jibsheet.net\/linux\/index.php\/2022\/03\/23\/python-how-to-construct-and-and-or-with-like\/\",\"url\":\"https:\/\/www.jibsheet.net\/linux\/index.php\/2022\/03\/23\/python-how-to-construct-and-and-or-with-like\/\",\"name\":\"Python - 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