PLS-00103: Encountered the symbol "IF" when expecting one of the following in oracle function -


i writing below function in getting error pls-00103: encountered symbol "if" when expecting 1 of following: ( - + case mod new null <an identifier>. know error coming @ line trying append if condition threshold_min_alert string . want append string minimum threshold if condition , value. example minimum threshold should come if v_threshold_min_alert = y then

threshold_min_alert(alert configured) 100

if v_threshold_min_alert = n then

threshold_min_alert 100

if remove if condition function runs fine.i dont know syntax of how append if codition.here function: 

function build_alert_email_body     (       in_alert_logs_timestamp in timestamp     ) return varchar2     body varchar2(4000) := '';     v_kpi_def_id number := '';     v_kpi_type_id number := '';     v_kpi_threshold_min_vale number := '';     v_kpi_threshold_max_vale number := '';     v_threshold_min_alert number;              begin      select kpi_def_id v_kpi_def_id kpi_logs kpi_log_id = in_kpi_log_id;     select kt.kpi_type_id v_kpi_type_id kpi_definition kd join kpi_type kt on kd.kpi_type = kt.kpi_type_id kd.kpi_def_id = v_kpi_def_id;     select threshold_max_val v_kpi_threshold_max_vale kpi_definition kpi_def_id = v_kpi_def_id;     select threshold_min_val v_kpi_threshold_min_vale kpi_definition kpi_def_id = v_kpi_def_id;     select threshold_min_alert v_threshold_min_alert kpi_definition kpi_def_id = v_kpi_def_id;     select threshold_max_alert v_threshold_max_alert kpi_definition kpi_def_id = v_kpi_def_id;          body := 'alert timestamp : ' || to_char(in_alert_logs_timestamp,'dd.mm.yyyy hh24:mi') || chr(13) || chr(10);          if ((v_kpi_type_id = 18) or (v_kpi_type_id = 19))            body := body || 'minimum threshold' || if (v_threshold_min_alert = y) '(alert configured)' end if; || v_kpi_threshold_min_vale || chr(13);                     end if;         return body;     end build_alert_email_body;

the problem in below if-end if block:

if (v_threshold_min_alert = y)            '(alert configured)'     end if;     || v_kpi_threshold_min_vale || chr(13); end if;
  1. you need assign value variable.
  2. "y" string, , not boolean value. must enclose within single-quotation marks.

for example,

if (v_threshold_min_alert = 'y')            body := body||'(alert configured)'; else     body := body|| v_kpi_threshold_min_vale || chr(13); end if;

alternatively, use case expression:

for example,

body := body || 'minimum threshold' ||         case         when v_threshold_min_alert = 'y'            'alert configured'         end || v_kpi_threshold_min_vale || chr(13);

also,

body varchar2(4000) := '';

body oracle keyword. better use different name.

for example,

v_body varchar2(4000) := '';

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